JP6153365B2 - Construction method of water collecting device - Google Patents

Description

  The present invention relates to a construction method for a water collecting apparatus that removes suspended matter (treated matter) contained in treated water such as domestic wastewater and industrial wastewater, and collects treated water from which the suspended matter has been removed. .

  This type of water collecting apparatus is provided with an inflow portion for allowing treated water to flow in at the top, and a plurality of perforated blocks each having a water conduit for inflow water connected in the direction of water introduction. A plurality of perforated block rows are installed in parallel on an installation surface such as a bottom panel of a water treatment facility.

Such a water collecting apparatus is generally constructed through the following steps (a) to (d).
(A) A plurality of pillow members extending along the transverse direction of the perforated block row are dispersedly arranged at a plurality of locations in the extending direction of the perforated block row on the installation surface.
(A) The perforated block row is arranged on the installation surface in a state of being supported on the upper surfaces of the plurality of pillow members.
(C) Displacement restricting members that are positioned above the perforated block row and restrict the upward displacement of the perforated block row are dispersedly arranged at a plurality of locations in the extending direction of the perforated block row.
(D) Gap between the perforated block rows in a state where displacement of the perforated block row is regulated by the displacement regulating member (further, a gap between the wall / bottom of the water treatment facility and the perforated block row) ) Is filled with a solidifying filler, and then the displacement regulating member is removed.

  In other words, the construction of this type of water collecting device is to adjust the level (height position) of the perforated block with a plurality of pillow members, and then lift the perforated block due to buoyancy or the like (an example of upward displacement). The perforated block row is accurately installed by filling the solidifying filler while solidifying the filler while regulating with the displacement regulating member.

  As described above, regarding the arrangement positions of the pillow member and the displacement regulating member related to the installation accuracy of the perforated block row, as shown in Patent Document 1, the front and rear intermediate portions of the perforated blocks constituting the perforated block row There is known a construction method in which pillow members are arranged at two front and rear positions, and the displacement regulating member is arranged at the front and rear central portions of each perforated block (that is, the central portion between the two front and rear pillow members). .

  In this conventional construction method, even if a downward pressing force is applied to the front and rear center position of the perforated block due to the arrangement of the displacement restricting member, the pressing is performed by the pillow members distributed in two places on the front and rear of the perforated block. Since the pressure is received in a balanced manner on both the front and rear sides to maintain the posture of the perforated block, there is an advantage that it is possible to reliably prevent inconvenience that the posture of the perforated block changes with the filling of the solidifying filler by installing the displacement regulating member. is there.

JP 2009-226246 A

  However, the arrangement work of the pillow member (for example, the laying work of the pillow mortar) requires high accuracy in the top end level in order to adjust the level of the perforated blocks. In the conventional construction method in which two pillow members are installed on the block, there is a serious problem that it takes time and effort to construct the water collecting device.

  The present invention has been made in view of the above circumstances, and the main problem is that the perforated block row can be accurately installed by rational improvement of the arrangement positions of the pillow member and the displacement regulating member, and It exists in the point which provides the construction method of the water collection apparatus with high workability which can reduce the quantity of the pillow member which supports a perforated block.

The first characteristic configuration of the present invention includes a perforated block that is provided with an inflow portion for allowing water to flow in at an upper portion, and a plurality of perforated blocks each having a water conduit for inflow water connected along a water guiding direction. To construct a water collector with block rows installed in parallel on the installation surface,
A plurality of pillow members extending along the transverse direction of the perforated block row are dispersedly arranged at a plurality of locations in the extending direction of the perforated block row on the installation surface and are supported on the top surfaces of the plurality of pillow members. The hole block row is arranged on the installation surface, and displacement regulating members that are located above the perforated block row and restrict the upward displacement of the perforated block row are distributed and arranged at a plurality of locations in the extending direction of the perforated block row. In the state where the displacement of the perforated block row is restricted by the displacement restricting member, the gap between the perforated block rows is filled with a solidifying filler, and then the displacement restricting member is removed. A construction method of the device,
The position of the pillow member and the displacement regulating member is set to a connection position between the perforated blocks constituting the perforated block row or a position in the vicinity thereof.

  That is, according to this configuration, since the position of the pillow member is set to a connection position between the perforated blocks constituting the perforated block row or a position near the perforated block row, first, the perforated block row (in other words, For example, the perforated block row can be supported in a state in which the important part (connection position of the perforated blocks) of the perforated block is supported by a single pillow member. It becomes possible to reduce.

  In addition, since the displacement restricting member is disposed at the connection position between the perforated blocks corresponding to the disposition position of the pillow member or in the vicinity thereof, a downward pressing force acts even if the displacement restricting member is disposed. However, if the point of action of the pressing force is the leverage point (that is, the location of the displacement restricting member in the perforated block), the leverage point of the lever and the fulcrum of the lever (ie The distance between the hole block and the position of the pillow member) can be reduced, and as a result, it occurs at the point of action of the lever (connection position between the perforated blocks, in other words, the end of the perforated block). Force can also be reduced.

  Therefore, it is possible to reduce the number of pillow members that require time and labor for the placement work, and the end portions of the perforated blocks and the perforated blocks are caused by the downward pressing force generated by the placement of the displacement regulating member. The force acting on the connecting part of the perforated block is reduced, and the perforated blocks are tilted by the downward pressing force due to the arrangement of the displacement regulating member, so that the installation accuracy is lowered, or the connecting parts between the perforated blocks are damaged or gaps are generated. Can be suppressed.

  The 2nd characteristic structure of this invention sets the arrangement position of the said pillow member and the said displacement control member to the arrangement position of the one end part of a perforated block as a position near the connection position of the said perforated blocks. It is in.

  That is, according to this configuration, since both the pillow member and the displacement regulating member are arranged at one end portion of the perforated block in the vicinity of the connection position between the perforated blocks, for example, with one end portion of the perforated block, Compared to the case where the pillow member and the displacement restricting member are arranged separately on the other end, even if a downward pressing force is generated by the arrangement of the displacement restricting member, the end of the perforated block or the hole The force acting on the connecting portion between the blocks can be reduced, and the stress acting on the perforated block alone can also be reduced.

According to a third characteristic configuration of the present invention, the perforated block has a receiving portion at one end and an insertion portion at the other end so that a plurality of the perforated blocks can be connected and connected in the same direction.
The position of the pillow member and the displacement restricting member is set as the position of the end of the perforated block where the end of the perforated block is formed.

  That is, for example, in the case where both the pillow member and the displacement regulating member are arranged at the insertion port side end portion where the insertion portion is formed as one end portion of the perforated block, this is accompanied by the arrangement of the displacement regulating member. The insertion portion is pressed downward by the downward pressing force, which may cause a problem that a gap is generated between the opposing surfaces of the lower surface of the receiving portion and the upper surface of the insertion portion at the upper surface portion of the connection position between the perforated blocks. .

  On the other hand, if it is the said structure which arrange | positions both the said pillow member and the said displacement control member in the receptacle side edge part in which the said receptacle part was formed as one end part of a perforated block, it will be in installation of a displacement regulation member. Since the receiving part is pressed downward by the downward pressing force that accompanies it, the lower part of the receiving part is pressed against the upper surface of the insertion part at the upper part of the connection position between the perforated blocks by the pressing force. Can do.

  Therefore, it is possible to effectively suppress the occurrence of a gap between the opposed surfaces of the lower surface of the receiving port portion and the upper surface of the insertion portion in the upper surface portion of the connection position between the perforated blocks.

Configuration diagram of water treatment equipment Perspective view of perforated block Perspective view of main part showing construction method of water collecting device Perspective view of main part showing construction method of water collecting device Side view of main parts showing construction method of water collecting device Side view of essential parts showing construction method of water collecting apparatus according to another embodiment Side view of essential parts showing construction method of water collecting apparatus according to another embodiment

  FIG. 1 shows a water treatment facility Y that removes suspended matters (objects to be removed) contained in water to be treated such as clean water, industrial water, industrial water, domestic wastewater, and industrial wastewater. Is provided with a removing means 10 for removing the object to be removed contained in the water to be treated by the treatment layer 11 and a water collecting device X for collecting the treated water from which the suspended matter has been removed by the removing means 10. .

  The treatment layer 11 is configured as a filtration layer that is filled with a granular medium 12 such as silica sand, anthracite, and granular activated carbon, and removes the object to be removed contained in the water to be treated by filtration. In the present embodiment, the two processing layers 11 of the lower silica layer 11a and the upper anthracite layer 11b are provided, but a single processing layer 11 may be provided.

  In addition, the treatment layer 11 may remove the removal object contained in to-be-processed water by biological treatment. In this case, the treatment layer 11 becomes a biological treatment layer, and for example, the surface of the granular medium 12 carries microorganisms that biologically decompose the object to be removed.

  That is, the removing means 10 supplies the treated water from above the removing means 10 (for example, the drainage trough 50) to the treated layer 11 and passes the treated layer 11 so that the removed object contained in the treated water. Is removed by the treatment layer 11.

  In the water collecting apparatus X, removal means for removing the object to be removed contained in the treated water by passing the treated water downward from above the treated layer 11 filled with the granular medium 12. A plurality of perforations formed by connecting a plurality of perforated blocks 20 that support 10 and collect treated water, which has passed through the treatment layer 11 and from which the objects to be removed have been collected, in a hollow internal space along the direction of water introduction. A block row BL is provided.

  Further, the water collecting device X includes a pillow member (support material) 110 that is located between the perforated block row BL and the installation surface G and adjusts the level of the perforated block row BL, and each perforated block row BL. And a solidifying filler 30 that is filled in between and fixes each of the perforated block rows BL. A reinforcing member (not shown) is disposed in the filler 30.

  The perforated block 20 is disposed below the removing unit 10 and supports the removing unit 10. In the present embodiment, a perforated plate 60 is disposed between the removing means 10 and the perforated block 20. Note that a gravel support layer may be provided instead of the perforated plate 60.

  As shown in FIG. 2, the perforated block 20 is connected to an outer wall 21 (upper wall 21 a, side wall 21 b, bottom wall 21 c) that is hollow and has a substantially rectangular cross section, and an inner side of the outer wall 21. An inner wall (inclined inner wall 22) that divides the internal space of the hole block 20 into a plurality of spaces is provided.

  The perforated block 20 may be formed of any material as long as it has excellent corrosion resistance and pressure resistance. For example, if it is molded by foam molding of high density polyethylene, the moldability is good. Since the weight can be reduced, workability is good in terms of transportation and construction.

  The upper wall 21a directly contacts the lower surface of the removing means 10 and directly supports the removing means, or indirectly supports the removing means 10 via the perforated plate 60 or a gravel support layer. The side wall 21b is a pair of opposing walls connected to the upper wall 21a, and the bottom wall 21c is a wall connected to the lower ends of the pair of side walls 21b.

  The inclined inner wall 22 includes a side circulation part B (an example of a water conduit) located on both sides of the inner space of the perforated block 20 and a central circulation part A (a water conduit) located between these side circulation parts B. The cross section is formed in a substantially inverted V shape.

  The upper space of the upper wall 21a and the side circulation part B communicate with each other via a plurality of upper wall hole parts a1 (an example of an inflow part into which water can flow) formed in the upper wall 21a. Further, the pair of side flow parts B and the central flow part A communicate with each other via a plurality of inner wall hole parts b1 formed in the inclined inner wall 22.

  The treated water from which the objects to be removed have passed through the treatment layer 11 flows down to the side circulation part B via the upper wall hole a1 after passing through the porous plate 60 or the gravel support layer by the action of gravity. Further, the water flows down to the central circulation part A through the inner wall hole b1 and is collected.

  The treated water flows down the flume 70 provided below the perforated block 20 through the bottom wall opening (not shown) formed in the bottom wall 21c of the perforated block 20, or is connected to the central circulation part A. The pipe (not shown) flows down and is transferred to a predetermined water tank.

  On the upper surface of the upper wall 21a, an upper wall first rib portion 23a extending from the side wall 21b, an upper wall second rib portion 23b parallel to the upper wall first rib portion 23a, and an upper wall first rib portion 23a An upper wall third rib portion 23c that intersects perpendicularly is provided.

  By these rib portions 23a to 23c, the upper surface of the upper wall 21a is divided into a plurality of sections. By providing these rib portions 23a to 23c, the pressure resistance of the upper wall 21a can be strengthened, and the bending of the upper wall 21a due to the load of the removing means 10 can be prevented.

  The perforated plate 60 is placed on the upper surfaces of the rib portions 23a to 23c. The perforated plate 60 is fixed to the rib portions 23a to 23c with bolts or tapping screws. For example, the perforated plate 60 may be configured by joining many pellets having a diameter of several mm. As the pellet, ceramics, sintered metal, etc. can be used in addition to plastics such as polyolefin.

  When the plurality of perforated blocks 20 are juxtaposed on the side wall 21b, the lateral side that transmits the load from above and below received by the perforated blocks 20 to the filler 30 filled between the perforated blocks 20 Ribs 24 are formed.

  The side ribs 24 may be horizontal side ribs 24A extending in the horizontal direction and vertical side ribs 24B extending in the vertical direction. In any rib shape, the upward load received by the perforated block 20 by the upper end surface 24a is transmitted to the filler 30, and the downward load received by the perforated block 20 by the lower end surface 24b is filled. 30.

  As shown in FIG. 2 and FIG. 4, the perforated block 20 has a receiving portion 90 (an example of an inserted portion) at one end 20A and the other end 20B so that a plurality of holes in the same direction can be connected and connected. In addition, an insertion portion 80 (an example of an insertion portion) that is smaller than the receptacle portion 90 is formed.

  A plurality of the perforated blocks 20 are arranged in the same direction, and a plurality of the perforated blocks 20 are fitted and connected by inserting the insertion portion 80 of another perforated block 20 into the receiving portion 90 of the perforated block. The column BL is configured to be formed.

  The filler 30 is provided between the perforated blocks 20 adjacent to each other in the direction orthogonal to the axial direction of the side flow part B and the central flow part A when the plurality of perforated block rows BL are arranged in parallel. A known filler can be used as long as it is a material that is solidified with time after being poured into a gap or the like in a fluid state, such as mortar or concrete.

  The solidified filler 30 fills the gaps between the perforated blocks 20 arranged side by side and firmly adheres and fixes the perforated blocks 20 to each other so that the removing means 10 placed above the perforated blocks 20 is fixed. A stable support state appears.

  The pillow member 110 adjusts the level (height position) of the perforated block row BL to a predetermined value when installing the perforated block row BL on the installation surface G constituting the bottom plate of the water treatment facility Y. This is a level adjusting member.

  As shown in FIGS. 1, 3, and 4, the pillow member 110 is configured in a band shape having a rectangular cross section extending along the transverse direction of the perforated block row BL, and includes the perforated block row BL. The blocks 20 are dispersedly arranged at a predetermined pitch (in this example, the length of the perforated block 20) at each connection position between the blocks 20.

  The water collecting apparatus configured as described above is constructed through the following steps (a) to (d) (see FIGS. 3 to 5).

(A) Pillow member arrangement process With respect to the installation surface G that constitutes the bottom plate of the water treatment facility Y, the entire area of the plurality of perforated block rows BL to be juxtaposed is targeted, and along the transverse direction of the perforated block rows BL The plurality of pillow members 110 extending in a row are arranged in a state (an example of a state in which the pillow members 110 are dispersed at a plurality of locations in the extending direction of the perforated block row BL) that are located at predetermined pitches corresponding to the length of the perforated block 20. .

Specifically, each pillow member 110 is set as a position near the connection position K between the perforated blocks 20 (an example of the connection position K or its vicinity), and the end of the perforated block 20 on the receptacle 90 side. It arrange | positions at the arrangement position of 20A. That is, the position of each pillow member 110 as the position near the connection position K between the perforated blocks 20 (an example of the connection position or its vicinity) is the end portion 20A on the receptacle 90 side of each perforated block 20. Set to the position of.

  The position near the connection position K between the perforated blocks 20 is displaced forward and backward from the connection position K, but the distance from the connection position K between the perforated blocks 20 is about the total length L of the perforated blocks 20. The position is within 1/3 (400 mm in this example). In this example, the pillow member 110 is disposed at a position about 200 mm away from the connection position K between the perforated blocks 20 in the front-rear direction.

  Each pillow member 110 juxtaposes a long mold material (not shown) made of wood or the like on both sides of the pillow member installation planned location on the installation surface G, and pours mortar while checking the upper surface level between the mold materials, After the mortar is solidified, the mold material is removed to form a strip shape having a rectangular cross section and a predetermined level upper surface.

(A) Perforated block row arrangement step Each perforated block 20 is connected and arranged on the installation surface G in a state where the end portion 20A on the receiving side 90 side of each perforated block 20 is supported by each pillow member 110, A plurality of perforated block rows BL are arranged in parallel on the installation surface G at a predetermined level via the pillow member 110.

(C) Displacement restricting member arrangement step For the plurality of perforated block rows BL arranged in parallel on the installation surface G, the displacement restricting member 120 is provided with a plurality of perforated portions along the transverse direction of the perforated block row BL. It arrange | positions on the upper surface of the perforated block row | line | column BL with the attitude | position covering the upper surface of the block row | line | column BL. In this example, the displacement regulating member 120 is composed of a long tube material.

  The displacement restricting member 120 connects each of the anchor members 130 penetrating on both sides of each of the perforated block rows BL on the installation surface G and each corresponding portion of the displacement restricting member 120 positioned corresponding thereto with a wire 140 (connecting member). In other words, the displacement restricting member 120 is pulled down and restrained by the wire 140, in other words, the perforated block row BL is arranged to be pressed downward by the displacement restricting member 120. The anchor member 130 is composed of, for example, an eye bolt having a locking hole portion 130a formed at the upper end.

  The displacement restricting member 120 is arranged in a state (an example of a state in which it is dispersed at a plurality of locations in the extending direction of the perforated block row BL) positioned at a predetermined pitch corresponding to the length dimension of the perforated block 20.

Specifically, each displacement restricting member 120 is disposed at the end portion 20A on the receptacle 90 side of each perforated block 20 as a position in the vicinity of the connection position K between the perforated blocks 20 in the perforated block row BL. . That is, the position of each displacement restricting member 120 is the position near the connection position K between the perforated blocks 20 (an example of the connection position or its vicinity), and the end on the receiving port 90 side of each perforated block 20 Set to 20A.

  In this example, the displacement regulating member 120 is disposed at a position about 100 mm away from the connection position K between the perforated blocks 20 in the front-rear direction.

(D) Filler filling step / displacement restricting member removal step After disposing a plurality of displacement restricting members 120, the gap 30 between the perforated block rows BL is filled with the filler 30, and the displacement restricting is performed after the filler is solidified. The member 120 is removed. At this time, the filling material 30 is filled in a plurality of stages, and the displacement regulating member 120 is removed in the middle of the filling, and the wire 140 is inserted into the gap between the perforated block rows BL. You may make it embed.

[Another embodiment]
(1) In the above-described embodiment, each of the pillow member 110 and the displacement restricting member 120 is illustrated as an example in the vicinity of the connection position K between the perforated blocks 20, but for example, the perforated block 20 You may arrange | position in the connection position K between.

(2) In the above-described embodiment, the case where both the pillow member 110 and the displacement restricting member 120 are arranged at the end portion 20A on the receiving port 90 side of each perforated block 20 is shown as an example. You may arrange | position both the member 110 and the displacement control member 120 in the edge part 20B by the side of the insertion part 80 of each perforated block 20. FIG.

In addition, for example, as shown in FIG. 6, the pillow member 110 is an end portion 20 </ b> B on the insertion portion 80 side of each perforated block 20, and the displacement regulating member 120 is an end on the receiving portion 90 side of each perforated block 20. Alternatively, the pillow member 110 may be disposed at the end portion 20A of the perforated block 20 on the receiving port 90 side, and the displacement regulating member 120 may be inserted into the perforated block 20. You may arrange | position in the edge part 20B by the part 80 side. However, if the displacement restricting member 120 is provided at the end 20A of the perforated block 20 on the receiving port 90 side, the lower surface of the receiving port 90 is inserted and connected by the downward pressing force accompanying the arrangement of the displacement restricting member 120. was spigot 8 without permission of the closed state is pressed against the upper surface of 0, since that can suppress generation of a gap between the opposing surfaces of the upper surface of the lower surface and the spigot 8 0 of the socket portion 9 0, the pad member 110 each It is desirable to dispose the displacement restricting member 12 at the end portion 20A of each perforated block 20 at the receiving portion 90 side at the end portion 20B of the perforated block 20 at the insertion portion 80 side.

  Further, for example, as shown in FIG. 7, the pillow member 110 and the displacement regulating member 120 are arranged at both end portions 20 </ b> A and 20 </ b> B of one perforated block 20, thereby arranging the pillow member 110 and the displacement regulating member 120. The perforated blocks 20 and the perforated blocks 20 on which the pillow member 110 and the displacement regulating member 120 are not arranged may be alternately arranged along the extending direction of the perforated block row BL.

(3) In the above-described embodiment, the case where the displacement regulating members 120 are arranged in a state of being positioned on the upper surfaces of the plurality of the perforated block rows BL is shown as an example, but the upper surface of only one row of the perforated block rows BL. You may arrange | position in the state located in.

(4) In the above-described embodiment, the case where the pillow member 110 is arranged in a state of supporting a plurality of the perforated block rows BL is shown as an example, but in the state of supporting only one row of the perforated block rows BL. You may arrange.

  The present invention is not limited to the water collection device of the water treatment facility that treats the water to be treated, such as clean water, industrial water, industrial water, domestic wastewater, industrial wastewater, etc., and construction of various water collection devices provided in various facilities Can be suitably used.

a1 Inflow part A, B Water conduit 20 Perforated block BL Perforated block row
G Installation surface X Water collecting device 110 Pillow member 120 Displacement regulating member 30 Filler 20A, 20B End portion 90 Receiving portion 80 Insertion portion

Claims (3)

A perforated block row comprising a plurality of perforated blocks provided with an inflow portion for allowing water to flow in and having a water conduit for inflow water therein along the water guiding direction is in parallel with the installation surface. To build the installed water collecting device,
A plurality of pillow members extending along the transverse direction of the perforated block row are dispersedly arranged at a plurality of locations in the extending direction of the perforated block row on the installation surface and are supported on the top surfaces of the plurality of pillow members. The hole block row is arranged on the installation surface, and displacement regulating members that are located above the perforated block row and restrict the upward displacement of the perforated block row are distributed and arranged at a plurality of locations in the extending direction of the perforated block row. In the state where the displacement of the perforated block row is restricted by the displacement restricting member, the gap between the perforated block rows is filled with a solidifying filler, and then the displacement restricting member is removed. A construction method of the device,
The construction method of the water collecting apparatus which sets the arrangement position of the said pillow member and the said displacement control member to the connection position of the said perforated blocks which comprise the said perforated block row | line | column, or its vicinity position.   The construction of the water collecting apparatus according to claim 1, wherein the arrangement position of the pillow member and the displacement regulating member is set to the arrangement position of one end portion of the perforated block as a position near the connection position of the perforated blocks. Method. The perforated block has a receiving part at one end and an insertion part at the other end so that a plurality of blocks can be connected and connected in the same direction.
The arrangement position of the said pillow member and the said displacement control member is set to the arrangement position of the receiving part side end part in which the said receiving part was formed as an arrangement position of the one end part of the said perforated block. Construction method of water collecting device.

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