JP5404191B2 - Drainage dredge repair method and repair dredging - Google Patents

Description

  The present invention relates to a method for repairing a drainage basin installed on a piping route and a repair basin used therefor.

  For example, in steelworks, a large amount of water is used for the purpose of cooling the steel sheet in the hot rolling process. In this case, seawater may be used, and the water used in the facility 51 is drained into the sea through a piping route buried in the ground as shown in FIG.

  On such a piping route, drainage tubs 1 for storing mud and the like so that only water flows through the piping 2 are installed at appropriate intervals.

JP 2002-106051 A

  When the drainage basin 1 is cracked or damaged due to aging or load, it is necessary to repair such as filling the part with grout. In this case, for example, a method may be considered in which the equipment 51 is stopped and repaired after the drainage tub 1 has no water. However, it is necessary to avoid the stoppage of the equipment 51 in a steelworks that operates for 24 hours.

  In addition, a bypass route 52 that bypasses the drainage basin 1 to be repaired is installed (see the dotted line in FIG. 6), and the inflow of water to the drainage basin 1 is blocked, and the drainage basin 1 has no water. A method to repair after that is considered. However, it is necessary to install the bypass route 52 only for repairing the drainage basin 1, which requires a large-scale construction, which increases the construction period and costs.

  From the current situation as described above, a technique capable of repairing a drainage basin in a state where water is flowing is desired. For example, excavating around the drainage basin 1 and repairing it from the outside of the drainage basin 1 has been implemented as a method of repairing the drainage basin with water flowing. Construction is necessary, and the construction period becomes longer and costs increase.

  As this type of technology, for example, Patent Document 1 discloses an existing manhole in which an enclosure is inserted into an existing manhole, and the enclosure is connected to an inlet and an outlet of the manhole by an upstream pipe and a downstream pipe, respectively. A repair method and a repair rod are disclosed.

  However, Patent Document 1 is directed to a manhole in which water slightly flows at the bottom. In the piping route as shown in FIG. 6, a large amount of water flows, and the water surface in the drainage basin 1 is located above the piping 2, and the technique disclosed in Patent Document 1 is applied. It ’s difficult.

  This invention is made | formed in view of the above situations, and it aims at enabling it to repair a drainage basin in the state with a short construction period, low cost, and the water flowing.

The drainage basin repair method of the present invention is a drainage basin repairing method for repairing a drainage basin with which pipes communicate, wherein a repair basin provided with an opening is installed in the drainage basin, The opening of the repair rod is communicated by inflating a water stop tube disposed around the opening of the repair rod and crimping around the opening of the piping, and the space around the communicating portion is communicated with the piping. And isolated from the inside of the repair basin, sucking up water from the isolated space in the drainage basin, and then filling the space with grout.
The repair rod according to the present invention is a repair rod used for repairing a drainage basin with which pipes communicate with each other, the skeleton being slightly smaller than the drainage basin, an opening provided in the skeleton, and the repair jar. in a state in which was placed in the drainage chambers, communicating with said opening and an opening of the pipe, and a isolation means for isolating the space around the communication portion from the interior of the pipe and the repair squares, the The isolation means is constituted by a water stop tube disposed around the opening, and is configured to inflate the water stop tube and press-fit around the opening of the pipe .
Another feature of the repair rod according to the present invention is that the water stop tube is configured such that after the gas is supplied and inflated, the gas can be removed and filled with grout.

  According to the present invention, since the repair rod is installed in the drainage basin, the drainage basin can be repaired in a state where the construction period is short, the cost is low, and the water is flowing.

1 is a perspective view schematically showing a drainage basin and a repair basin according to a first embodiment. It is a figure for demonstrating the procedure of the repair of the drainage basin using the repair tack in 1st Embodiment. It is a figure which shows a water stop tube. It is a perspective view which shows roughly the drainage basin and the repair turret concerning 2nd Embodiment. It is a figure for demonstrating the procedure of the repair of the drainage basin using the repair basin in 2nd Embodiment. It is a figure for demonstrating a drain.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
(First embodiment)
With reference to FIGS. 1-3, the repair method of the drain according to 1st Embodiment and the repair rod used for it are demonstrated. FIG. 1 is a perspective view schematically showing a drainage dredge 1 and a repair rod 100. The drainage basin 1 is buried in the ground, and the upper opening is exposed on the ground surface. The pipes 2 communicate with the inner surfaces of the drainage tub 1 facing each other.

  The repair rod 100 is composed of a frame 101 that is slightly smaller than the drainage rod 1. The casing 101 is made of a metal plate such as a steel plate, and an opening 102 having substantially the same diameter as the pipe opening 2 a is formed on each side surface facing the pipe 2.

  Here, although not shown in FIG. 1, as shown in FIG. 2, an annular inner wall 103 and an annular outer wall 104 are erected around the opening 102 on the outer surface of the housing 101. . Between these inner wall 103 and outer wall 104, a rubber annular water stop tube 105 as shown in FIG. 3 is provided. The water stop tube 105 includes an air nozzle 105a and a grout nozzle 105b, and after being inflated with air, the air can be removed and filled with grout.

  Hereinafter, with reference to FIGS. 2A to 2C, a procedure for repairing the drainage tub 1 using the repair tub 100 will be described. As shown in FIG. 2A, the repair rod 100 is installed in the drainage basin 1 with water flowing through the pipe 2 and the drainage basin 1. Here, it is assumed that a large amount of water flows and the water surface in the drainage basin 1 is located above the pipe 2. However, if water enters the repairing basin 100 from the opening 102, the rest is easy. The repair rod 100 can be installed in The repair rod 100 has a height at which the upper opening surface is located above the water surface in the drainage rod 1.

  Next, in a state where the positions of the pipe opening 2 a and the opening 102 of the repair rod 100 are aligned, air is supplied to the water stop tube 105 through the nozzle 105 a to inflate the water stop tube 105. Thereby, as shown in FIG. 2B, the water stop tube 105 is crimped around the opening 2 a on the inner surface of the drainage tub 1, and the pipe opening 2 and the opening 102 communicate with each other. At the same time, the space S between the drainage dredger 1 and the repair rod 100 and around the water stop tube 105 that is a communication part is isolated from the pipe 2 and the inside of the repair rod 100.

  Next, water is sucked up from the isolated space S in the drain 1 and then, as shown in FIG. 2C, the space S is filled with grout 106 such as cement paste or mortar.

  Further, after the grout 106 in the space S is cured, air is extracted from the water stop tube 105 through the nozzle 105a, and the water stop tube 105 is filled with the grout through the nozzle 105b.

  The repair of the drainage basin 1 is completed by the above procedure. That is, after that, the repair rod 100 functions as a drainage rod.

  As described above, since the repair rod 100 is installed in the drainage rod 1 in a state where water is flowing, there is no need to suspend the equipment 51 or install the bypass route 52. There is no need to excavate around the dredging 1, the construction period is short, and the drainage dredging 1 can be repaired at low cost. More specifically, in order to align the positions of the pipe opening 2a and the opening 102 of the repair rod 100, an underwater operation by a diver is required, but otherwise only an external operation is required. In particular, in the piping route for draining the cooling water that has cooled the steel plate in the hot rolling process, the temperature of the drainage may reach several tens of degrees.

(Second Embodiment)
With reference to FIGS. 4 and 5, a drainage gutter repair method according to the second embodiment and a repair gutter used therein will be described. FIG. 4 is a perspective view schematically showing the drainage tub 1 and the repair tub 200. The drainage basin 1 is buried in the ground, and the upper opening is exposed on the ground surface. The pipes 2 communicate with the inner surfaces of the drainage tub 1 facing each other.

  The repair rod 200 is composed of a housing 201 that is slightly smaller than the drainage rod 1 and a movable member 203 that is housed in the housing 201. The casing 201 is made of a metal plate such as a steel plate, and an insertion hole 202 is integrally formed on one side surface facing the pipe 2 and a pipe portion 208 is integrally formed on the other side surface. The pipe part 208 has a dimensional relationship that can be inserted into the pipe 2. In addition, the near side (left side of FIG. 5) of FIG. 4 is called one side, and the back side (right side of FIG. 5) of FIG. 4 is called the other side.

  The movable member 203 includes a base material 203a that faces one inner surface of the housing 201, and a pipe portion 203b that protrudes from the base material 203a. The pipe portion 203 b protrudes from the insertion hole 202 of the repair rod 200 and has a dimensional relationship that can be inserted into the pipe 2. In the present embodiment, the openings of the tube portions 203b and 208 correspond to the openings in the present invention.

  Here, although not shown in FIG. 4, as shown in FIG. 5, a plurality of feed screws 204 are erected around the insertion hole 202 on one inner surface of the housing 201. . The feed screw 204 is screwed into the nut 205 while passing through the base member 203a of the movable member 203. Therefore, by rotating the nut 205, the movable member 203 can be brought close to or separated from one inner surface of the drainage tub 2 along the feed screw 204. That is, the pipe part 203b is movable in the axial direction.

  Further, on one inner side surface of the housing 201, an annular seal member 206 is provided around the insertion hole 202 so as to face the base material 203 a of the movable member 203. An annular seal member 207 is provided on the outer peripheral surface of the distal end of the tube portion 203 b of the movable member 203.

  An annular seal member 209 is also provided on the outer peripheral surface of the distal end of the pipe portion 208.

  Hereinafter, with reference to FIGS. 5A to 5C, a procedure for repairing the drainage basin 1 using the repair basin 200 will be described. As shown in FIG. 5A, the repair rod 200 is installed in the drainage basin 1 with water flowing through the pipe 2 and the drainage basin 1. As in the first embodiment, it is assumed that a large amount of water flows and the water surface in the drainage basin 1 is located above the pipe 2, but water from the pipe portions 203 b and 208 into the repair basin 200. If it enters, repair rod 200 can be easily installed afterwards. The repair rod 200 has a height at which the upper opening surface is located above the water surface in the drainage rod 1.

  Next, as shown in FIG. 5B, when the nut 205 is tightened and the movable member 203 is moved in one direction, the base material 203a is crimped to the seal member 206, and the tip of the tube portion 203b is moved to one side. Inserted into the pipe 2, the seal member 207 is crimped to the inner peripheral surface of the pipe 2, and the pipe opening 2 and the pipe portion 203 b communicate with each other.

  When the nut 205 is further tightened, the movable member 203 cannot advance any further, so that the casing 201 itself moves in the other direction, and the tip of the pipe portion 208 is inserted into the other pipe 2, so that the seal member 209 is moved. Is pressure-bonded to the inner peripheral surface of the pipe 2 so that the pipe opening 2 and the pipe portion 208 communicate with each other.

  In this state, a space S between the drainage tub 1 and the repair rod 200 and around the pipe portions 203b and 208, which are communication parts, is isolated from the pipe 2 and the inside of the repair rod 200.

  Next, water is sucked up from the isolated space S in the drain 1 and then, as shown in FIG. 5C, the space S is filled with grout 210 such as cement paste or mortar.

  The repair of the drainage basin 1 is completed by the above procedure. That is, after that, the repair rod 200 functions as a drainage rod.

  As mentioned above, although preferred embodiment in the case of implementing this invention was described, this invention is not limited only to this embodiment, In the range which implement | achieves the meaning of this invention, it can change suitably. . For example, in the above embodiment, the rectangular drainage basin 1 is described, and the casings 101 and 201 are also rectangular. For example, in the case of a cylindrical drainage basin, the repair caddy is a circle slightly smaller than the drainage basin. The present invention can be applied by making it columnar.

1: Drainage 2: Piping 100: Repair rod 101: Housing 102: Opening 103: Inner wall 104: Outer wall 105: Water stop tube 106: Grout 200: Repair rod 201: Housing 202: Insertion hole 203: Movable member 203a: Substrate 203b: Pipe part 204: Feed screw 205: Nut 206, 207, 209: Seal member 208: Pipe part 210: Grout

Claims (3)

A method of repairing a drainage basin that repairs a drainage basin that communicates with piping,
A repair pit with an opening is installed in the drainage basin,
The opening of the piping and the opening of the repair rod are communicated by inflating a water stop tube disposed around the opening of the repair rod and crimping around the opening of the piping . Isolate the surrounding space from the inside of the pipe and the repair rod,
A method for repairing a drainage basin, comprising sucking water from the isolated space in the drainage basin and then filling the space with grout. A repair rod used to repair a drainage basin with which pipes communicate,
A housing that is slightly smaller than the drainage basin;
An opening provided in the housing;
Isolation means for connecting the opening of the piping and the opening in a state where the repairing basin is installed in the drainage basin, and isolating the space around the communication portion from the inside of the piping and the repairing basin. Prepared,
The repair rod is constituted by a water stop tube disposed around the opening, and is configured to inflate the water stop tube and press-fit around the opening of the pipe . 3. The repair rod according to claim 2 , wherein the water stop tube has a configuration in which after the gas is supplied and inflated, the gas can be extracted and the grout can be filled.

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