JP6548079B2 - Water purification system - Google Patents

Description

  The present invention relates to a water purification system mainly used during diving work.

  In order to construct a civil engineering structure, the foundation work may be underwater work, and various operations by a diver are indispensable at the offshore airport or port facility due to the installation location.

  In such foundation work, leveling of crushed stone is the typical work content, but underwater work by diver is variously carried out such as transportation, welding, cutting, digging, bolting, and the purpose is also civil engineering It covers a wide range such as maintenance and inspection of structures, connection of pipes, surveying of the bottom of the water, resource survey, recovery of sunken ships, and there are various working places such as the sea, rivers, lakes and reservoirs.

  When performing underwater work by a diver, it is necessary to be able to see a sufficient distance in water from the viewpoint of workability and safety, and if it can not be solved by a measure to compensate for the lack of illuminance, water in the work area The transparency of the subject must be kept above a certain level.

  Therefore, in the prior art, sufficient fluoroscopicity is secured by settling suspended solids in water in the form of flocs by addition and agitation of a flocculant (Patent Document 1), or, further, the flocculant by the water flow generated by air injection. The cohesion has been enhanced to enhance the flocculation and sedimentation, thereby further improving the transparency (Patent Document 2).

Unexamined-Japanese-Patent No. 5-321234 JP, 2014-117626, A

  Here, in order to increase the visibility of water spreading to the underwater working area, curtains or sheets are suspended in the water so as to surround the underwater working area, thereby preventing the inflow of pollutants or the outflow of the coagulant. In the countermeasure described in Patent Document 1, a configuration is adopted in which a plurality of floats 4 are attached to the upper circumferential surface of the curtain 3 and a weight is attached to the lower end of the curtain (paragraphs [0008] to [0009] In the countermeasure described in Patent Document 2, a configuration is adopted in which the float 11 is attached to the upper part of the sheet material 10 and the weight 12 is attached to the lower part of the sheet material (paragraph [0016]).

  However, regardless of the invention described in Patent Document 1 in which the underwater working area is limited to the joint between the bottom pipes 21 and 22, the size of the range in which the underwater work is required varies generally, and the patent In the configuration in which the float 11 is attached to the upper portion of the sheet material 10 and the weight 12 is attached to the lower portion as in the invention described in Document 2, various widths and float numbers differ according to the size of the target range of underwater work. It is necessary to prepare sheets of the specifications in advance, or to customize the sheets for each operation in the water, which causes a problem that the purification cost may increase.

  Further, when the target range in which the underwater work is performed is wide, if the method of collectively cleaning the entire target range as the underwater work area is used, the purification efficiency is poor, and time is required to secure the transparency, so the efficiency of the underwater work also decreases.

  Therefore, in the case described above, it is desirable to repeat the process of limiting the underwater working area to a part of the target range and sequentially moving the underwater working area every time the underwater work is completed within the target range. In the present invention, the weight 12 has to be pulled up each time to repeatedly move the landing position one by one, which is troublesome, and the floating surface position of the sheet material 10 can not be determined due to the floating of the float 11, It was originally difficult to move the underwater working area accurately within the range, and there was also a problem that the quality in the underwater work could be reduced.

  The present invention has been made in consideration of the above-mentioned circumstances, and even if the target range in which the underwater work is performed is an arbitrary size, purification is possible even if it is applicable and the target range is large. An object of the present invention is to provide a water purification system capable of advancing underwater work efficiently and accurately.

In order to achieve the above object, the water purification system according to the present invention is, as described in claim 1, surrounded by a surrounding body disposed so as to surround at least a part of a target range for underwater work and the surrounding body In a water purification system comprising a purification means capable of purifying an underwater working area,
The surrounding body is suspended via a plurality of supports disposed in the vicinity of the water surface and a plurality of suspension portions provided on the upper vessel and extending on the upper edge of the surrounding body so as to extend beyond the peripheral edge of the vessel. A hanging frame configured to be held, and a hanging portion positioned on the opposite side of the plurality of the hanging portions in a state in which the surrounding body is suspended in the surrounding posture, at least either of them And a drive mechanism configured to horizontally move the hanging portion on the heel side as the movable holding portion along the hanging and supporting frame structure.

  Further, in the water purification system according to the present invention, the base ship is disposed on the side of the water area of the existing structure, and the side edges of the surrounding body are side surfaces of the existing structure. Are attached to the side surfaces so as to be in contact with the

  Further, in the water purification system according to the present invention, the surrounding body is provided with a circumferential wall sheet hanging from the vicinity of the water surface toward the bottom of the water so that the horizontal cross section is U-shaped; A bottom plate-like sheet disposed on the bottom or above the water bottom so as to be respectively joined to the lower facing surfaces of a pair of wall-like sheet portions facing each other, the cleaning means comprises a flocculant supply device and the underwater work It comprises using the stirring apparatus which stirs an area | region, and the pumping apparatus installed in the said underwater working area, and positions the suction port of this pumping apparatus in the vicinity of the said bottom plate-like sheet | seat.

  Further, in the water purification system according to the present invention, the support ships are constituted by a pair of support ships spaced from each other, and the suspension and support frame is constituted by travel rails bridged by the pair of support ships, The driving mechanism is composed of a crane suspended movably on a traveling rail, and the movable suspension portion is hooked on the crane.

  Further, in the water purification system according to the present invention, the base ship is configured as a single base ship, and the lifting and supporting frame is configured as a traveling rail extended from the single base ship in a cantilever manner. The above-mentioned drive mechanism is constituted by a crane suspended so as to be able to travel on a traveling rail, and the movable suspension portion is hooked on the crane.

Further, the water purification system according to the present invention includes a surrounding body disposed so as to surround at least a part of a target range in which the underwater operation is performed, and purification means capable of purifying the underwater working area surrounded by the surrounding body. In the water purification system,
A pair of berths arranged so as to be separated from each other on the side of the water area of the existing structure and an auxiliary disposed on the side opposite to the existing structure on the side of the space between the pair of berths Equipped with a charter,
The surrounding body is constituted by using a peripheral wall sheet hanging from the vicinity of the water surface toward the bottom of the water so that the horizontal cross section is U-shaped, and each side edge portion of the peripheral wall sheet is the respective side Each side edge is attached to the side face of the existing structure so as to be in contact with the side face of the existing structure, and from the upper edge to the lower edge at each position spaced apart from the respective side edge by a fixed width It is configured to be able to be divided into three sheet pieces by opening and closing freely, and a winding device capable of taking up each sheet piece is installed on each of the pair of base ships and the auxiliary base ship. .

  Further, in the water purification system according to the present invention, the surrounding body is joined to the bottom facing surface of the pair of sheet pieces facing each other among the circumferential sheet and the circumferential sheet, or the water bottom or the water bottom thereof The cleaning means is constituted by a flocculating agent supply device, a stirring device for stirring the underwater working area, and a pumping unit installed in the underwater working area. In addition, the suction port of the sifting device is positioned in the vicinity of the bottom plate-like sheet.

  Further, in the water purification system according to the present invention, the side edges of the enclosure are respectively constituted by bag-like edges which can be expanded and contracted, and the bag-like edges are inserted into a predetermined fixture. The attachment is attached to the side surface.

  Further, in the water purification system according to the present invention, each side edge portion of the enclosure is configured by a foldable foldable edge portion, and the dropout edge portion is pressed by a predetermined pressing tool to be the side surface The pressing tool is attached to the side surface so as to be folded over.

  Moreover, the water purification system according to the present invention is configured such that the number of folds of the weir-shaped edge portion is larger at the lower side than at the upper side.

[First Invention]
In the water purification system according to the first aspect of the present invention, the suspension structure floats in the vicinity of a target range (hereinafter simply referred to as target range) in which the underwater work is performed, and the suspension structure extending beyond the periphery of the base Adjust the direction of the charter so that it is above the range.

  Next, the enclosure is suspended by a suspension structure via a plurality of suspension portions provided on the upper edge of the enclosure so that the enclosure is suspended in water, and the enclosure is suspended. By surrounding at least a part of the above-mentioned target range with a surrounding body, and the inside thereof is made an underwater working area.

  Here, when the surrounding body is suspended in the surrounding posture, at least one of the suspending portions facing each other in the surrounding posture is used as a movable suspending portion, and the movable suspending portion is used as the movable suspending portion. By moving horizontally along the suspension structure with the drive mechanism, the separation dimensions of the mutually opposing suspension portions are appropriately changed.

  In this way, the surrounding width of the enclosure can be adjusted in accordance with the size of the target range in which the underwater work is performed, so sheets and curtains are prepared for each size of the target range as in the prior art, and There is no need to customize sheets and curtains according to the range.

  In addition, the horizontal position of the enclosure can be freely adjusted by the drive mechanism with respect to at least a portion of the enclosure provided with the movable suspension portion, even if the target range for underwater work is large, The process of sequentially moving the underwater working area every time the underwater working is finished can be accurately repeated within the target range while limiting the underwater working area to a part of the target range, and thus the target range is large. Even purification and underwater work can be advanced efficiently.

  When the enclosure of the target area by the enclosure is completed, the underwater working area surrounded by the enclosure is water-purified by a conventionally known method to secure a certain degree of transparency, and then the underwater operation by the diver is started Alternatively, the work may be performed underwater while resuming or purifying the water.

  It is sufficient if at least any one of them is a movable suspension, but if any of them are movable suspensions, the surrounding body can be made more quickly and accurately for the target range. It is possible to position in

  The enclosure may be configured to cover the target area alone, that is, to surround all the sides of the target area, but when partially covering the sides of the target area, especially with dams, revetments and other existing structures Even if it encloses the target range, it is included, and arrange a charter vessel to the side of the water area of the existing structure, and each side edge of the above-mentioned enclosure is the side edge part of the existing structure. A configuration in which each is attached to the side so as to abut on the side is a typical example.

  How the purification means is configured is optional, and it is possible to use a flocculant supply device, a stirring device for stirring an underwater working area surrounded by a surrounding body, and a pumping unit installed in the underwater working area. In such a configuration, the target range is sufficient if the side is surrounded, and for the lower part, it is an open state, and the flock formed by the coagulant You may make it settle on the bottom of the water.

  Here, the surrounding body sheet is provided by hanging the surrounding body from the vicinity of the water surface toward the water bottom so that the horizontal cross section becomes a U-shape, and a pair of wall-like sheet portions facing each other among the circumferential wall-like sheets The bottom plate-like sheet placed on the bottom of the water or above in the form of being joined respectively to the lower facing surface of the above, and the purification means is installed in the coagulant supply device and the stirring device for stirring the underwater working area and the underwater working area The sediment deposited on the bottom plate sheet can be lifted if the suction port of the mud device is positioned in the vicinity of the above-mentioned bottom plate-like sheet, while using the In addition, in the case of a bottom plate-like sheet, unlike floe which is sediment, flocculated matter of the floc and sores of the floc soak up into the water and there is no concern that the fluoroscopy falls. Collection to be flat In particular, the bottom plate-like sheet is deformed into a mortar shape by placing the lifting-down device on the bottom-plate-like sheet and acting on its own weight or a part thereof. For example, the mud accumulation is further improved, and the transparency can be further improved.

  The configuration of the support ship and the suspension support structure is also optional, but the support ship is configured by a pair of support ships spaced apart from each other, and the support suspension structure is configured by a traveling rail over the pair of support ships. A crane suspended on the traveling rail so as to constitute the above-described drive mechanism and a construction in which the movable suspension portion is suspended on the crane; or a boat comprising a single boat; The frame is constituted by a traveling rail extended in a cantilever manner from the boat, and the above-mentioned drive mechanism is constituted by a crane suspended movably on the traveling rail, and the movable suspension portion described above is constituted by the crane The suspended configuration is a typical example.

  In addition, if the influx of pollutants does not occur so as to exceed the purification of water quality by the purification means, it is sufficient that the contaminants are polluting substances in the enclosure or the enclosure and the connection between the enclosure and the existing structure. It is not required that the water barrier property does not substantially allow the inflow of water, for example, the enclosure can be made of water permeable geotextile, but when the enclosure is made of a water impermeable sheet, There is no possibility that the agent, the contaminant or the floc adheres to the enclosure as the water permeates, and cleaning of the enclosure becomes unnecessary and handling such as storage becomes easy.

[Second Invention]
In the water purification system according to the second aspect of the present invention, a pair of deck ships are arranged to be separated from each other on the side of the water area of the existing structure, and the existing space is a side of the separation space of the pair Position the support vessel on the side opposite the structure.

  Next, while unrolling three sheet pieces from each of the winding devices respectively installed on the pair of charter and auxiliary barge, they are gradually closed upward from the lower edge to form a peripheral-wall-like sheet. An underwater working area is formed on the inner side, and each side edge of the peripheral sheet is attached to the side so that each side edge is in contact with the side of the existing structure.

  In this manner, when the underwater working area is formed by enclosing the target area with the enclosure and the underwater working area is formed inside, the water working area is purified by the conventionally known method to ensure a certain visibility, and then diving Start or resume underwater work by a person or perform underwater work while purifying water quality.

  Next, the peripheral-wall-like sheets constituting the enclosure are collected and transferred to the next work place in the water. In order to perform such collection, the peripheral-wall-like sheets are gradually opened from the upper edge thereof to form three sheet pieces. While being divided, the respective sheet pieces are taken up by a winding device respectively installed on a pair of the charter and the auxiliary charter.

  After recovery by winding, move to a new underwater working place, arrange a pair of charters and auxiliaries in the same manner as described above, and then take up each winding apparatus according to the same unwinding procedure as described above. The three sheet pieces are unrolled into a peripheral sheet and an underwater working area is formed on the inner side thereof.

  In this way, it is possible to recover or suspend the enclosure from the water in a very short time, as compared to the case where the enclosure is withdrawn from the water with the operator's hand and suspended into the water. It is possible to move quickly to the underwater working place of

  How the purification means is configured is optional, and is configured using a flocculant supply device, a stirring device for stirring the above-mentioned underwater working area, and a pumping unit installed in the underwater working area. The case is a typical configuration, but in such a configuration, it is sufficient for the underwater work to be covered if the side is surrounded, and the lower side is an open state, and the flock formed by the coagulant You may make it settle on the bottom of the water.

  Here, the surrounding body is a bottom plate-like sheet disposed on the bottom of the water bottom or above in the form of being joined to the lower opposing surfaces of the pair of sheet pieces facing each other among the above-mentioned peripheral sheet and the peripheral sheet. The cleaning means is constituted by using a flocculant supply device, a stirring device for stirring the underwater working area, and a pumping mud installed in the underwater working area, and the suction port of the pumping mud is bottom plate-like. If positioned in the vicinity of the sheet, the sediment deposited on the bottom plate sheet can be pumped up, so there is a concern that the floc which is the sediment or the peptized matter of the floc will soar into the water and the visibility may be reduced. In addition, in the case of a bottom plate-like sheet, unlike the bottom of the bottom plate which is not flat, it has a good collection ability because of its flat surface. Of the pumping equipment By the action of heavy or part thereof, if the bottom plate-like sheet to deform into a bowl shape, collecting dirt resistance is further improved, thereby enabling further improvement of the perspective of.

  In addition, if the influx of pollutants does not occur so as to exceed the purification of the water quality by the purification means, it is sufficient for the ambient bodies to substantially contaminate the pollutants at the surroundings of the envelope and the connection between the enclosure and the existing structure. It is not required to be water proof so as not to let it flow, for example, it is possible to constitute the enclosure by water permeable geotextile, but when the enclosure is constituted by a water impermeable sheet, a flocculant or a pollutant Alternatively, there is no possibility that the flock adheres to the enclosure as the water permeates, so cleaning of the enclosure becomes unnecessary and handling such as storage becomes easy.

[Items common to each invention]
In each of the above-described inventions, the side edge of the enclosure is constituted by a bag-like edge which can be inflated and contracted, and the attachment is attached to the above-mentioned side in a state where the bag-like edge is inserted into a predetermined attachment. Alternatively, the side edge of the enclosure may be a foldable foldable ridged edge, and the foldable edge may be pressed by a predetermined pusher and folded. By attaching it to the side of the frame, it is possible to secure a certain level of water-proofness at the connection point between the enclosure and the existing structure, which reduces the transparency by the inflow of pollutants and consequently the workability in diving work Can be prevented. In the latter configuration, if the number of folds increases in the lower part than in the upper part, it is possible to further improve the water barrier property at the above-mentioned connection portion.

BRIEF DESCRIPTION OF THE DRAWINGS The whole perspective view of the water purification system 1 which concerns on 1st Embodiment. It is a figure in the side edge part circumference of the enclosure 6, (a) is a front view, (b) is a side view, (c) is a detailed front view, (d) is a detailed sectional view along the A-A line direction . It is a figure of the water purification system 1, (a) is a top view, (b) is a side view seen from the B-B line direction. It is a figure which concerns on the modification of 1st Embodiment, (a) is a perspective view of the surrounding body 44, (b) is a whole side view. It is a figure of the modification in the side edge part periphery of the surrounding body 6, (a) is a perspective view, (b) is a detailed sectional view, (c) is a front view, (d) is a side view. FIG. 14 is a detailed cross-sectional view of another modification around the side edge of the surrounding body 6; The whole perspective view of the water purification system which concerns on a modification. The whole perspective view of the water purification system which concerns on another modification. The whole perspective view of the water purification system 81 which concerns on 2nd Embodiment. It is a figure of the water purification system 81, (a) is a top view, (b) is the side view seen from the CC line direction. It is a figure which concerns on the modification of 2nd Embodiment, (a) is a perspective view of the surrounding body 93, (b) is a whole side view.

  Hereinafter, an embodiment of a water purification system according to the present invention will be described with reference to the attached drawings.

First Embodiment
FIG. 1 is an overall perspective view showing the water purification system according to the first embodiment. As shown to the same figure, the water purification system 1 which concerns on this embodiment is applied to the reservoir 2 of a dam, Comprising: It mutually spaces apart in the reservoir side side of the dam dike 3 as an existing structure. And a pair of anchor ships 4, 4 arranged in the vicinity of the water surface of the reservoir 2, and two traveling rails 8, 8 parallel to each other and bridged over the pair of anchor ships so as to exceed the periphery of each anchor ship. And an enclosure 6 suspended by the traveling rail.

  The surrounding body 6 is constituted by a peripheral sheet which is provided from the vicinity of the water surface to the bottom of the water so that the horizontal cross section is U-shaped, and the hanging portions 7a and 7b provided on the upper edge thereof It is suspended by the traveling rails 8 and 8 via this.

  The hanging portions 7a and 7b can be configured using a channel steel as shown in the figure, and the upper edge of the surrounding body 6 is inserted into the inside of the channel steel and fastened with a bolt or the like. It can be fixed to the upper edge by means.

  Here, the hanging portions 7a and 7b are opposed to each other in a state in which the surrounding body 6 is suspended in a surrounding posture, in the present embodiment, in a posture where the horizontal cross section becomes U-shaped as shown in FIG. Among these, the suspension 7 a is fixed to the traveling rails 8 and 8.

  In addition, when the surrounding body 6 takes the above-mentioned surrounding attitude | position, the water area surrounded by this surrounding body and the wall surface 23 of the dam embankment 3 becomes an underwater working area.

  On the other hand, the suspending portion 7b is hooked on the cranes 9, 9 as drive mechanisms respectively suspended on the traveling rails 8, 8 so as to be runnable, and horizontally along the traveling rails 8, 8 as movable suspending portions. While being movable, this makes it possible to freely adjust the surrounding width of the surrounding body 6 (in FIG. 1, the distance along the direction parallel to the wall surface 23 of the dam wall 3).

  As shown in FIG. 1, the surrounding body 6 is provided with a hook-like portion 10 extending from the upper edge to the lower edge at one of the corners of the U-shaped cross section, whereby the cranes 9, 9 along the traveling rails 8, 8. It is possible to follow the horizontal movement of the hanging portion 7b along the arrow direction of the figure accompanying it.

  In addition, it is preferable to provide a stopper (not shown) on the traveling rails 8 and 8 as necessary in order to limit the movement range of the hanging portion 7b.

  As shown in FIG. 2, the surrounding body 6 is configured such that each side edge thereof is an inflatable and contractible bag-like edge 21, and the bag-like edge is inserted into the attachment 22. By mounting the fixture on the wall surface 23 of the dam wall 3, each side edge can be brought into contact with the wall surface 23 of the dam wall 3.

  The attachment 22 is attached to the base plate 26 with the pair of holding pieces 25 facing each other so that the bag-like edge 21 can be held and held from the side, and the bag-like edge 21 is When the bag-like edge is contracted, the bag-like edge is inserted into the slit 24 formed at the tip of the holding piece 25, and then air or water is injected into the bag-like edge 21. It may be made to expand.

  As shown in FIG. 3, the water purification system 1 according to the present embodiment includes a coagulant supply device 31, an underwater mixer 32 as a stirring device, a pumping pump 33 as a pumping device, and a slime treatment tank 35. The coagulant is supplied from the coagulant supply device 31 installed on the left side vessel 4 of the left side of the figure to the water area surrounded by the surrounding body 6 through the supply pipe 36, ie, the underwater working area 34. The agitation is carried out by the submersible mixer 32 attached to the seabed 4 to coagulate the polluting substances floating in the submersible working area 34 and to deposit them as flocs on the bottom of the water and After being pumped up through the mud tube 37 and treated in the slime treatment tank 35 installed on the right ship 4 in the same figure, the supernatant water is returned to the underwater working area 34 through the condenser tube 38, In work area 34 Kicking hold higher than the water level of the surrounding water the water level is adapted to prevent the muddy water flowing from the waters around functions underwater work area 34 as a whole as purification means for water purification.

  In the water purification system 1 according to the present embodiment, first, the pair of base vessels 4 are separately arranged on the side of the reservoir side of the dam wall 3 (step 101).

  Next, the surrounding body 6 is suspended by the traveling rails 8 and 8 via the suspending portions 7a and 7b provided on the upper edge of the surrounding body 6 so that the surrounding body 6 is vertically installed in water. At the same time, by setting the surrounding body 6 in the surrounding posture, the underwater working area 34 is formed inside the surrounding area 6 by surrounding the target range in which the underwater work is to be performed (step 102).

  When suspending the surrounding body 6 in the surrounding posture, of the hanging portions 7a and 7b located at positions facing each other in the surrounding posture, the hanging portion 7b is used as a movable hanging portion, and the movable hanging portion travels By moving horizontally along the rails 8 and 8 with the cranes 9 and 9, the separation dimensions of the opposing hanging portions 7 a and 7 b are appropriately changed.

  In this way, it is possible to adjust the enclosure width by the enclosure 6, or the width W in FIG. 3, in accordance with the size of the target range in which the underwater work is performed.

  It is preferable to attach a weight to the lower edge of the enclosure 6 as needed so that the enclosure 6 is vertically suspended vertically in water.

  Next, the fixture 22 is attached to the wall surface 23 of the dam embankment 3, and then the bag-like edge portion is a slit of the holding pieces 25, 25 of the fixture 22 in a state where the bag-like edge 21 of the surrounding body 6 is contracted. Each side edge of the surrounding body 6 is inserted into the inner side of the holding piece 24 via the insert 24 and then inflated by injecting air or water into the bag-like edge 21 so that each side edge of the surrounding body 6 The wall surface 23 is made to abut (step 103).

  When the surrounding of the target area by the enclosure 6 is completed in this way, next, while supplying the coagulant from the aggregating agent supply device 31 to the underwater working area 34 surrounded by the enclosure 6, the underwater working area 34 The slurry is stirred by the submersible mixer 32 to coagulate the suspended matter suspended in the submersible working area 34 and deposit it on the bottom of the water as a floc, and the sediment is raised by the lifting mud pump 33 for slime treatment. By processing at 35, the underwater work area 34 is made more transparent (step 104). The supernatant water treated in the slime treatment tank 35 may be returned to the underwater working area 34 as appropriate.

  If the transparency of the underwater working area 34 becomes more than a certain level, then the underwater work by the diver is started, and if interrupted, it is resumed (step 105). In addition, if there is no problem in the underwater work, the underwater work may be performed while performing the above-described water purification.

  When the underwater work is completed, the fixtures 22 are removed, and the side edges of the surrounding body 6 are separated from the wall surface 23 of the dam wall 3, and the surrounding body 6 is withdrawn and recovered from the water. Prepare for work (step 106).

  As described above, according to the water purification system 1 according to the present embodiment, the lifting portion 7b is a movable lifting portion of the lifting portions 7a and 7b of the surrounding body 6 located at positions facing each other. Since the movable suspension portion is horizontally moved by the cranes 9 and 9 along the traveling rails 8 and 8, the separation dimension of the suspension portions 7a and 7b can be appropriately changed, and the target range in which the underwater work is performed The enclosure width by the enclosure 6 can be adjusted to the size of.

  Therefore, the versatility regarding the size of the target range in which underwater work is performed is improved, and sheets and curtains are prepared for each size of the target range as in the prior art, and sheets and curtains are customized according to the target range. There is no need.

  In the present embodiment, of the suspension portions 7a and 7b of the surrounding body 6, only the suspension portion 7b is the movable suspension portion, but instead of this, both of the suspension portions 7a and 7b are movable suspension portions It does not matter.

  According to this configuration, the surrounding body 6 can be positioned more quickly and accurately with respect to the target range in which the underwater work is performed.

  Further, in the present embodiment, it is assumed that the target range in which the underwater work is performed is collectively processed, and the entire target range is surrounded by the surrounding body 6 and the inside thereof is the underwater working area 34. In the case where the target range extends, for example, in the left and right direction in FIG. 3, the target range is a series of procedures for performing steps 101 to 106 described above after moving the liner 4 or 4 in the right direction, for example. Repeat until all is covered.

  In the water purification method, the hanging portion 7b, which is a movable hanging portion, of the surrounding body 6 can freely adjust its horizontal position along the traveling rails 8, 8 by the cranes 9, 9. Even when the target range for performing underwater work is large, a series of procedures for sequentially moving the underwater work area 34 within the target range while accurately limiting the underwater work area 34 to a part of the target range It is possible to repeat and thus proceed efficiently with purification and underwater work.

  Further, in the present embodiment, the purification means for purifying the water in the underwater working area 34 is constituted by the coagulant supply device 31, the underwater mixer 32, the pumping pump 33 and the slime processing tank 35. Instead of the mud pump 33, an airlift can be used, and the water purification method is not limited to aggregation sedimentation in the first place, and can be appropriately selected from known water purification methods such as dilution, filtration, and adsorption is there.

  Further, in the present embodiment, the contaminants in the underwater working area 34 are deposited on the bottom of the water in the form of flocks, but the enclosure of the present invention is replaced with the enclosure 6 as shown in FIG. Similar to the above-described embodiment, the peripheral wall-shaped sheet 41 hanging from the vicinity of the water surface toward the bottom of the water so that the horizontal cross section is U-shaped, and the peripheral wall-shaped sheets face each other Of the bottom plate-like sheet 42 disposed above the bottom of the bottom of the pair of wall-like sheet portions 43, 43, respectively, joined to the lower opposing surfaces of the pair of wall-like sheet portions 43, 43 In the same manner as the embodiment, the flocculating agent is supplied from the flocculant supply device 31 to the underwater working area 34 surrounded by the circumferential wall sheet 41 and stirred by the underwater mixer 32 to coagulate the suspended matter floating in the underwater working area 34 like While formed, as for Agedoro pump 33 shown in FIG. (B), is desirable to the configuration in which position the suction port in the vicinity of the bottom plate-like sheet 42.

  The bottom plate-like sheet 42 can be provided with a hook-like portion similar to the hook-like portion 10 provided on the circumferential wall-like sheet 41 so as to follow the traveling of the cranes 9, 9 along the traveling rails 8, 8 (see FIG. Apply properly).

  According to this configuration, since the contaminant floating in the working area 34 in the water is deposited as floc on the bottom plate-like sheet 42, it can be lifted up, and floc which is the deposit or peptization of the floc In addition to the fear that the object may fly up into the water and the fluoroscopy may not be reduced, and in the above embodiment, the bottom of the water is not flat and the collecting ability may be poor. In particular, as shown in FIG. 6 (b), the mud pump 33 is placed on the bottom plate-like sheet 42 so that its own weight or one of the If the bottom plate-like sheet is deformed into a mortar shape by acting a part, the ability to collect mud is further improved, and the transparency can be further improved.

  In the embodiment and the modification thereof, the variable width configuration of the surrounding body 6 and the surrounding body 44 is configured to correspond to the collar portion, but instead, the surrounding body 6 and the surrounding body 44 are used. It is also possible to configure it to follow the above-mentioned variable configuration by forming it with a material that is rich in stretchability.

  Further, in the present embodiment, the side edges of the surrounding body 6 are respectively configured by the bag-like edge 21 which can be expanded and contracted, and the attachment in a state where the bag-like edge is inserted into the attachment 22 It is configured that each side edge can be brought into contact with the wall surface 23 of the dam wall 3 by attaching it to the wall surface 23 of the dam wall 3, but instead, as shown in FIG. Each side edge portion of the surrounding body 6 is configured by a foldable foldable edge portion 51, and the fold portion is pressed by the pressure plate 52 so as to be in a folded state. It is good also as composition so that each side edge of enclosure 6 can be made to contact wall surface 23 of dam embankment 3 by attaching to side 23.

  The pressing plate 52 can be constituted by a mounting bracket 54 fixed to the wall surface 23, a plate main body 53 connected to the mounting bracket via a hinge, and a weight 55 provided at the lower end of the plate main body According to such a configuration, a component force in a direction perpendicular to the plate main body 53 acts on the brim-like edge portion 51 of the weight of the weight 55 to press the edge portion 51, thereby improving the waterproofness at the contact location. Do.

  In the above-described configuration, if the number of folds of the ridge-like edge 51 is set to be greater at the lower side than at the upper side, the higher the water pressure, the larger the number of folds. It is possible to secure the water resistance of the

  On the other hand, the means for securing waterproofness at the contact point between each side edge of the surrounding body and the wall surface of the existing structure is not limited to the above-mentioned configuration, and as shown in FIG. The bearing plate 61 may be fixed to the wall surface 23 using the anchors 62 so that each side edge portion of the support is sandwiched between the side wall portions of the dam wall 3 and the wall surface 23.

  Furthermore, it is sufficient for the surrounding body if the side edges thereof are in contact with the wall surface of the existing structure, and it is not always the case that water repellency must be secured at the contact point. Even if the polluting material leaks from the contact point, if the purification means has purification ability exceeding that, the bag-like edge 21 which can expand and shrink each side edge of the surrounding body 6 or can be folded up It does not have to be configured with a scalloped edge 51.

  Moreover, in this embodiment, although the water area surrounded by the surrounding body 6 and the wall surface 23 of the dam embankment 3 was made into the underwater working area 34, the surrounding body of this invention is the object which performs underwater work with this surrounding body alone. The configuration surrounding the range is not excluded, and as shown in FIG. 7, the surrounding area to be subjected to the underwater work may be surrounded by a surrounding body 6 'whose horizontal cross section has a V shape, and the inside may be used as the underwater work area. Absent.

  In this modification, the surrounding edge 6 is attached to the wall surface 23 of the dam body 3 like the surrounding body 6 because the surrounding body 6 'is a closed cross section, not in the vicinity of the dam wall 3. The detailed description is omitted here because it is almost the same as the above-described embodiment except that the configuration is not included, but even in such a modification, a modification relating to the movable suspension portion and an underwater operation are performed. It is possible to arbitrarily apply the modification in the case where the target range is wide, the modification relating to the cleaning means, the modification of the enclosure described with reference to FIG.

  Further, in the present embodiment, the base ship of the present invention is configured by the pair of base ships 4 and 4. However, instead of this, as shown in FIG. Running rails 8a, 8a extending in cantilever fashion from the vessel so as to extend beyond the periphery, pillars 72, 72 respectively erected at one end of the traveling rail and the tops of the pillars, The cables 73 and 73 connecting the other ends of the traveling rails 8a and 8a constitute the suspension and supporting structure of the present invention, and the movable suspension portion 7b is hooked on the cranes 9, which are suspended movably on the traveling rails. It may be configured to stop.

  Here, the purification means is composed of the coagulant supply device 31, the submersible mixer 32, the lift pump 33 and the slime treatment tank 35, as in the above embodiment, and the coagulant supply device 31, the submersible mixer 32 and Although the slime processing tank 35 is configured to be installed entirely in the vessel 71, the installation configuration of these is omitted in FIG.

  In such a modification, the base ship 71 is floated on the side of the reservoir side of the dam embankment 3, and the base ships 71 are configured such that the traveling rails 8a, 8a constituting the suspension and support structure come above the target range for underwater work. The direction of is suitably adjusted (step 101 ').

  Next, the surrounding body 6 is suspended by the traveling rails 8a and 8a via the suspending portions 7a and 7b provided on the upper edge of the surrounding body 6 so that the surrounding body 6 is vertically installed in water. At the same time, by setting the surrounding body 6 in the surrounding posture, the target area is surrounded by the surrounding body 6, and the underwater working area 34 is formed inside thereof (step 102).

  When suspending the surrounding body 6 in the surrounding posture, of the hanging portions 7a and 7b located at positions facing each other in the surrounding posture, the hanging portion 7b is used as a movable hanging portion, and the movable hanging portion travels By moving horizontally with the cranes 9, 9 along the rails 8a, 8a, the separation dimensions of the supporting portions 7a, 7b opposed to each other are appropriately changed.

  In this way, the surrounding width of the surrounding body 6 can be adjusted in accordance with the size of the target range in which the underwater work is performed.

  Hereinafter, although Steps 103 to 106 are performed in the same manner as the above-described embodiment, the contents thereof are the same as the above-described embodiment, and thus the description thereof is omitted here.

  Note that, even in the present modification in which the boat is configured as a single unit, the modification relating to the movable suspension, the modification in the case where the target range for underwater work is wide, the modification relating to the purification means, and the go described with reference to FIG. It is possible to optionally apply any of the modification of the body, the modification of the attachment of the side edge of the enclosure described with reference to FIG. 5, the modification of the existing structure, and the modifications already described.

Second Embodiment
Next, the water purification system according to the second embodiment will be described. The same reference numerals are given to parts substantially the same as those of the first embodiment, and the description thereof is omitted.

  FIG. 9 is an overall perspective view showing the water purification system according to the second embodiment. As shown to the same figure, the water purification system 81 which concerns on this embodiment is applied to the reservoir 2 of a dam, Comprising: It mutually spaces apart in the reservoir side side of the dam dike 3 as an existing structure. A pair of base ships 82, 82 disposed near the water surface of the reservoir 2 and an auxiliary base ship 83 disposed on the side opposite to the space between the pair of base ships and opposite to the dam embankment 3; And winding bodies 84, 85, 86 are respectively installed on the pair of base ships 82, 82 and the auxiliary base ship 83, and the housing body 87 is taken up by the winding apparatus. Or is supposed to be unrolled.

  The surrounding body 87 is constituted by using a peripheral wall sheet hanging from the vicinity of the water surface toward the water bottom so that the horizontal cross section has a U-shape, and each side edge portion of the peripheral wall sheet is Each side edge is attached to the side face of the dam body 3 so as to abut on the side face 23.

  Here, three sheets 88, 89, and so on can be opened and closed from the upper edge to the lower edge at each position separated by a certain width from each side edge portion of the circumferential wall sheet constituting the surrounding body 87. The sheet piece 88 is taken up by the winding device 84, the sheet piece 89 is taken up by the winding device 85, and the sheet piece 90 is taken up by the winding device 86 in the rotational direction indicated by the arrow in FIG. It can be done.

  A water area surrounded by the surrounding body 87 and the wall surface 23 of the dam wall 3 is an underwater work area 34.

  As shown in FIG. 10, the water purification system 81 according to the present embodiment includes a coagulant supply device 31, an underwater mixer 32, a lift pump 33, and a slime treatment tank 35. While the flocculant is supplied from the installed flocculant supply device 31 to the water area surrounded by the surrounding body 87 through the supply pipe 36, that is, the underwater working area 34, the water attached to the boat 82 on the left side of the same figure. Stirring with the mixer 32 causes the contaminants floating in the water working area 34 to flocculate, and this is flocculated as sediment on the bottom of the water, and the sediment is pumped up through the mud pump 33 and the mud pipe 37. After processing in the slime processing tank 35 installed on the right ship 82 in the same figure, the supernatant water is returned to the underwater working area 34 via the condenser pipe 38, whereby the water level in the underwater working area 34 is increased. Of being adapted to prevent the muddy water flowing from the peripheral waters are held high than the water level, to function underwater work area 34 as a whole as purification means for water purification.

  In the water purification system 81 according to the present embodiment, a pair of base ships 82, 82 are arranged to be separated from each other on the side of the water area side of the dam embankment 3, and the side of the separation space of the pair of base ships. And a support ship 83 is disposed on the side opposite to the dam levee 3 (step 101 ′ ′).

  Next, while unrolling three sheet pieces 88, 89, 90 from the respective winding devices 84, 85, 86 installed respectively on the pair of base ships 82, 82 and the auxiliary base ship 83, they are taken from the lower edge By gradually closing toward the upper edge, a surrounding sheet 87 is formed into a surrounding body 87, and an underwater working area 34 is formed inside thereof (step 102 ').

  Preferably, a weight is attached to the lower edge of the enclosure 87 as needed so that the enclosure 87 is vertically suspended vertically in water.

  Next, the side edges of the surrounding body 87 are attached to the side surfaces such that the side edges are in contact with the side surfaces 23 of the dam body 3 (step 103). In addition, since the specific procedure is the same as that of 1st Embodiment and its modification, the description is abbreviate | omitted here.

  In this way, when the surrounding of the target range by the enclosure 87 is completed, the underwater working area is an underwater mixer while supplying the coagulant from the aggregating agent supply device 31 to the underwater working area 34 surrounded by the enclosure 87. Stirring at 32 aggregates the suspended matter floating in the working area 34 in the water and causes it to flocculate on the bottom of the water, and the sediment is lifted by the lifting pump 33 and treated in the slime treatment tank 35. By doing this, the transparency of the underwater working area 34 is increased (step 104). The supernatant water treated in the slime treatment tank 35 may be returned to the underwater working area 34 as appropriate.

  If the transparency of the underwater working area 34 becomes more than a certain level, then the underwater work by the diver is started, and if interrupted, it is resumed (step 105). In addition, if there is no problem in the underwater work, the underwater work may be performed while performing the above-described water purification.

  When the underwater work is completed, the respective side edges of the surrounding body 87 are separated from the wall surface 23 of the dam wall 3 and the peripheral sheet constituting the surrounding body 87 is recovered for the next underwater working place. In order to carry out such recovery, the surrounding body 87, which is a circumferential wall sheet, is gradually opened from the upper edge thereof and divided into three sheet pieces 88, 89, 90 while the respective sheet pieces are paired. The ship 82, 82 and the take-up device 84, 85, 86 installed respectively on the auxiliary vessel 83 are taken up to prepare for the next underwater work (step 106 ').

  As described above, according to the water purification system 81 according to the present embodiment, the winding devices 84, 85, 86 are respectively installed on the pair of base ships 82, 82 and the auxiliary base ship 83, and A peripheral wall-shaped sheet can be divided into three sheet pieces 88, 89, 90, and the sheet piece 88 is taken up by the winding device 84, the sheet piece 89 is taken up by the winding device 85, and the sheet piece 90 is taken up. As it has been made possible to take up each with 86, the surrounding body 87 is recovered from the water in a very short time as compared with the case where the surrounding body is withdrawn from the water with the operator's hand and suspended into the water, Alternatively, it can be installed vertically, and can be quickly moved to the next underwater working place.

  In the present embodiment, the purification means for purifying the water of the underwater working area 34 is constituted by the coagulant supply device 31, the underwater mixer 32, the pumping pump 33 and the slime treatment tank 35, but the pumping pump is a pumping pump. Instead of 33, an air lift can be used, and the method of purification of water quality is not limited to aggregation and sedimentation in the first place, and can be appropriately selected from known methods of water purification such as dilution, filtration and adsorption.

  Further, in the present embodiment, the contaminants in the underwater working area 34 are precipitated on the bottom of the water in the form of flocks, but the enclosure of the present invention is replaced by the enclosure 87 as shown in FIG. Similar to the above-described second embodiment, each sheet is suspended from the vicinity of the water surface to the bottom of the water so that the horizontal cross section becomes a U-shape, and is separated from the respective side edges by a fixed width. And a peripheral wall-shaped sheet 91 configured to be able to be divided into three sheet pieces 88, 89, 90 by opening and closing from the upper edge to the lower edge, and a pair of the peripheral wall-like sheets facing each other. A surrounding body 93 is formed of a bottom plate-like sheet 92 disposed above the water bottom and joined to the lower opposing surfaces of the sheet pieces 88 and 90, and the cleaning means is a peripheral wall as in the above embodiment. Surrounded by a sheet of paper 91 While stirring with the submersible mixer 32 while supplying the coagulant to the middle work area 34 from the coagulant supply device 31, the polluting material floating in the water work area 34 is configured to be aggregated, while the mud pump 33 is As shown in FIG. 7B, it is desirable that the suction port be positioned in the vicinity of the bottom plate-like sheet 92.

  According to this configuration, since the contaminant floating in the working area 34 in the water is deposited as floc on the bottom plate-like sheet 92, it can be lifted up, and floc which is the deposit or peptization of the floc In addition to the fear that the object may fly up into the water and the fluoroscopy degree may be reduced, and in the above-mentioned second embodiment, the bottom of the water is not flat and the collecting ability may be poor. Since the sheet 92 is flat, the ability to collect mud is improved, and in particular, as shown in FIG. 6B, the pump 33 is placed on the bottom plate sheet 92 to reduce its own weight or the weight of the pump. If the bottom plate-like sheet is deformed into a mortar shape by acting a part of the bottom plate, the ability to collect mud can be further improved, and the transparency can be further improved.

  Further, although the present invention has been described as an example in which the present invention is applied to the reservoir 2 of the dam embankment 3, in the present invention, the place where the underwater work is performed, the work target, the work purpose, and the like are arbitrary. , Rivers, lakes, reservoirs, etc., as underwater working areas, and port facilities, revetment facilities, levees, dams, etc. as work targets, and their basic construction, temporary construction, maintenance and inspection construction etc. It is possible, and it is also possible to aim at the water purification of the above-mentioned underwater working area itself as a work object.

1,81 Water Purification System 3 Dam Embankment (existing structure)
4, 71, 82 5 vessels 5 suspension and support frame 6, 6 ', 44, 87, 93
Enclosure 7a Hanger 7b Hanger (Movable Hanger)
8, 8a Traveling rail (hanging frame)
9 Crane (Drive mechanism)
21 bag-like edge 22 fixture 23 wall surface
31 Flocculant supply device (purification means)
32 Submersible mixer (stirrer, purification means)
33 Pumping mud pump (pumping device, purification means)
35 Slime treatment tank (purification means)
41, 91 peripheral wall-like sheet 42 bottom plate-like sheet 43 wall-like sheet part 51 ridge-like edge part 52 pressing plate (pressing tool)
72 pillars (hanging frame)
73 cable (hanging frame)
83 Auxiliary support ship 84, 85, 86 Take-up device 88, 89, 90 Sheet piece 92 Bottom plate sheet

Claims (10)

In a water purification system comprising a surrounding body disposed so as to surround at least a part of a target range in which underwater work is performed, and purification means capable of purifying the underwater working area surrounded by the surrounding body,
The surrounding body is suspended via a plurality of supports disposed in the vicinity of the water surface and a plurality of suspension portions provided on the upper vessel and extending on the upper edge of the surrounding body so as to extend beyond the peripheral edge of the vessel. A hanging frame configured to be held, and a hanging portion positioned on the opposite side of the plurality of the hanging portions in a state in which the surrounding body is suspended in the surrounding posture, at least either of them What is claimed is: 1. A water purification system comprising: a driving mechanism configured to horizontally move a hanging portion on the side of the canopy as a movable holding portion along the lifting frame. The base ship is disposed on the side of the water area of the existing structure, and each side edge of the enclosure is placed on the side so that the side edge is in contact with the side of the existing structure. The water purification system according to claim 1 attached. The surrounding body sheet is provided by hanging the surrounding body from the vicinity of the water surface toward the water bottom so that the horizontal cross section is U-shaped, and the lower side of a pair of wall sheet portions facing each other. The bottom plate-like sheet disposed on the bottom of the water or above in the form of being bonded to the opposite surface, and the purification means comprises a flocculant supply device, a stirring device for stirring the underwater working area, and the underwater working area 3. A water purification system according to claim 2, wherein said water purification system is constructed by using a sand removal apparatus installed on the bottom of said bottom plate-like sheet. The above-mentioned cruise ship is composed of a pair of cruise ships spaced apart from one another, and the above-mentioned lifting and supporting structure is composed of traveling rails bridged by the pair of sailing ships, and a crane suspended movably on the traveling rails. The water purification system according to any one of claims 1 to 3, wherein the drive mechanism is configured and the movable suspension unit is hooked on the crane. The support ship is constituted by a single support ship, and the suspension and supporting structure is constituted by a traveling rail extended in a cantilever form from the single support ship, and a crane suspended for traveling on the traveling rail. The water purification system according to any one of claims 1 to 3, wherein the drive mechanism is configured, and the movable suspension unit is hooked on the crane. In a water purification system comprising a surrounding body disposed so as to surround at least a part of a target range in which underwater work is performed, and purification means capable of purifying the underwater working area surrounded by the surrounding body,
A pair of berths arranged so as to be separated from each other on the side of the water area of the existing structure and an auxiliary disposed on the side opposite to the existing structure on the side of the space between the pair of berths Equipped with a charter,
The surrounding body is constituted by using a peripheral wall sheet hanging from the vicinity of the water surface toward the bottom of the water so that the horizontal cross section is U-shaped, and each side edge portion of the peripheral wall sheet is the respective side Each side edge is attached to the side face of the existing structure so as to be in contact with the side face of the existing structure, and from the upper edge to the lower edge at each position spaced apart from the respective side edge by a fixed width While being able to divide into three sheet pieces by making it openable and closable, a winding device capable of winding each sheet piece is installed on each of the pair of base ships and the auxiliary base ship. Water purification system to be. The surrounding body is constituted of the peripheral wall sheet and the bottom plate sheet disposed on the bottom of the water or above in the form of being joined to the lower opposing surfaces of a pair of sheet pieces facing each other among the peripheral wall sheet. And the purification means comprises a coagulant supply device, a stirring device for stirring the underwater working area, and a pumping unit installed in the underwater working area, and the suction port of the pumping unit is The water purification system according to claim 6, wherein the water purification system is positioned near the bottom plate sheet. Each of the side edges of the enclosure is constituted by an inflatable and contractible bag-like edge, and the fixture is attached to the side surface in a state where the bag-like edge is inserted into a predetermined fixture. The water purification system according to claim 2, claim 3, claim 6 or claim 7. The side edges of the enclosure are respectively constituted by foldable hook-like edges, and the press is pressed so that the hook-like edge is pressed by a predetermined press and folded on the side surface. 8. The water purification system according to claim 2, wherein the water purification system is attached to the side surface. 10. The water purification system according to claim 9, wherein the number of folds of the ridge-like edge is greater at the lower side than at the upper side.

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