JP6517892B2 - Water plug device - Google Patents

Description

  The present invention is a waterway repair work, a waterway switching / flowway change construction, a seismic reinforcement work of a waterway, etc., without stopping the water flow in an unwaterable unopened channel or an underground channel with flowing water constantly Relates to a water blocking plug device used for

  When the waterway of the water supply or sewage is damaged due to an earthquake, disaster or accident, or when repair is necessary due to deterioration, etc., repair work of the waterway, waterway switching, flow path change work or various methods such as aseismatic reinforcement work of waterway Waterway construction will be carried out. In waterway construction, water supply for water or sewage can be cut off only for a very short time, and waterway construction due to water supply is only an emergency measure, so a relatively long-term, full-scale waterway construction needs to be carried out with running water continued There is.

  A channel opening / closing device (plug device) for carrying out channel construction without stopping flowing water in the channel and a construction method using the same have been conventionally proposed.

  Patent documents 1 and 2 install a channel opening and closing device which consists of a panel which has a shape corresponding to the shape of a channel cross section in the upper stream side and downstream of a construction area, and maintain flowing water by a connecting pipe which a channel opening and closing device body has. Discloses a method and apparatus for drought in a construction area.

  Patent Document 3 is a conduit connecting pipe opening / closing devices installed on the upstream side and the downstream side of a work area of a water or sewage pipe, and a plurality of cylindrical pipes are connected and integrated, Disclosed is a sewerage method and apparatus using a conduit that can be deformed into a curved shape.

  Patent document 4 is an internal conduit-type pressurization operation for adjusting water stop and running water in a conduit connecting between the pipeline opening and closing devices installed upstream and downstream of a working area of a water supply or sewage pipe. An open / close pressure resistant lid apparatus is disclosed.

JP-A-09-014567 JP, 2009-074337, A JP, 2009-019757, A JP 2007-002644 A

  The above-mentioned construction method installs a channel opening and closing device on each of the upstream side and the downstream side of the construction site to be droughted, connects the conduits between them, and leads the running water into the conduit to cause the channel to dry.

  The inventor of the present invention is a method different from the method of continuing the flowing water by the conduit between the channel opening and closing devices, and by guiding the flowing water to another channel branched from the existing channel, the existing channel can be continued while continuing the running water. We have developed a construction method to shut off the section and shut off the section by blocking or closing a specific section or a specific part of the section, and a new construction water blocking plug device for it. In addition, we also developed a water blocking device with a novel structure for the water blocking device used for the method of continuing flowing water by the conduit between the water channel opening and closing device.

  Therefore, an object of the present invention is to provide a water blocking plug device of a novel structure that shuts off or blocks a water channel to stop the inflow of water.

The water blocking plug device according to the present invention is a circular panel main body concentrically disposed inside a circular cross section pipe, and is disposed all around the outer peripheral surface of the panel main body, and can expand or contract by injecting or discharging a fluid. A cylindrical ring-shaped bag body having an annular shape in which a cross section perpendicular to the circumferential direction is continuous, a ring-shaped flange panel projecting in the outer circumferential direction from both sides of the panel main body, and a head And a plurality of first bolts attached to the ring-shaped bag body, the ring-shaped bag body is fixedly disposed so as not to be offset with respect to the inner surface of the flange panel, diameter is pressed against the inner surface of the conduit stretches closing the conduit, the ring bag body is fixed at regular intervals over the entire circumference by the plurality of first bolts to the flange panels And wherein the door.

Preferably, in the water stopping plug device, a ring-shaped rubber in contact with the inner surface of the conduit over the entire circumference is provided on the outer peripheral edge portion of the front Symbol flange panel, the ring-shaped rubber is pressed against the flange panel Thus, the gap between the inner surface of the conduit and the outer peripheral edge of the flange panel is closed to block the conduit. Furthermore, an inclined surface on which the ring-shaped rubber is pressed against the outer peripheral edge of the flange panel is provided. Further, a ring pressing flange for supporting the ring-shaped rubber is attached to the outer peripheral edge of the flange panel by a bolt, and the ring-shaped rubber is pressed against the inclined surface of the flange panel by tightening the bolt.

  ADVANTAGE OF THE INVENTION According to this invention, the water stop plug apparatus which interrupts | blocks or blocks a water channel is provided in various water channel constructions, such as the repair work of a water channel, water channel switching * flow-path change construction, or the seismic reinforcement work of a water channel. It is possible to install in a state where the water flow is flowing in the water channel, and it can be installed safely and hygienically, without a worker being immersed in water, and reliable water stop is realized.

It is a figure which shows the construction procedure of the construction which makes a water channel dry and switches a flow path. It is a figure which shows the construction procedure of the construction which makes a water channel dry and switches a flow path. It is a figure which shows the construction procedure of the construction which makes a water channel dry and switches a flow path. It is a figure which shows the construction procedure of the construction which makes a water channel dry and switches a flow path. The structure of the panel main body 21 of the baffle type | mold water stop plug apparatus 20 is shown. It is a figure which shows the installation form of the baffle type | mold water stop plug apparatus 20. As shown in FIG. It is a figure which shows the structure of the panel main body 31 of the box-type water stop plug apparatus 30. FIG. FIG. 6 is a view showing a configuration of a jig coupled to the panel main body 31 of the box-type water blocking plug device 30. It is a figure which shows the installation form of the box-type water stop plug apparatus 30. FIG. It is a figure which shows the pressurization of the perpendicular downward direction of the panel main body 31. FIG. It is a figure which shows the construction procedure of another construction which makes a water channel dry and switches a flow path. It is a figure which shows the construction procedure of another construction which makes a water channel dry and switches a flow path. FIG. 6 is a view showing another installation form of the baffle type water blocking plug device 20. It is a figure which shows the structural example of the water stop plug apparatus in the example of 2nd Embodiment. FIG. 6 is a partial cross-sectional view of the water blocking plug device 50 including the periphery of the ring-shaped bag body 52.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, such an embodiment does not limit the technical scope of the present invention.

  In the first embodiment of the present invention, a water blocking plug device employed in a work for switching a flow path by droughting a water path will be described.

  FIG. 1 to FIG. 4 are diagrams showing the construction procedure of the work of switching the flow path by droughting the water channel. In the construction, for example, a water flow flowing through two open channel in parallel in a sewage treatment plant (one system water channel 11 and the other system 2 water channel 12) is newly installed without stopping the water flow. As an implementation procedure, first, in FIG. 1A, the temporary water channel 13 for bypassing the 1-system water channel 11, the 1-system water channel 11, and the 2 system water channel 12 are connected. The temporary water channel 14 to install. As shown in the figure, a gate 15 is provided between the primary water channel 11 and the secondary water channel 12 so that the water flow from the secondary water channel 12 can flow into the primary water channel 12. It is open.

  After that, in FIG. 1A, the baffle type water blocking device 20 is installed at two side walls of the primary water channel 11 connected to the temporary water channel 13, and the side wall portion blocked by the baffle type water blocking device 20 is After removal, the baffle type water blocking device 20 is removed after removal. Thereby, as shown in FIG. 1C, the temporary water channel 13 becomes a detour path of the 1-system water channel 11. The configuration of the baffle type water blocking device 20 will be described later. Subsequently, as shown in FIG. 1C, the baffle type water blocking device 20 is similarly installed on the side wall portion of the primary water channel 11 and the side wall portion of the secondary water channel 12 connected to the temporary water channel 14. The side wall portion stopped with the mold water blocking device 20 is removed, and after removal, the baffle type water blocking device 20 is removed. Thereby, as shown to Fig.2 (a), the temporary water channel 14 becomes a bypass path which connects the 1-system water channel 11 and the 2 system water channel 12. As shown in FIG.

  Subsequently, as shown in FIG. 2 (b), a box-type water blocking plug device 30 for blocking the water passage at each of the upstream position and the downstream position of the section A of the 1-system water passage 11 which can be stopped by installation of the temporary water passage 13 Install. By draining the remaining water of section A with a pump or the like after installation of the box-type water stop plug device 30, section A can be made dry. The configuration of the box-type water stop plug device 30 will be described later.

  Furthermore, as shown in FIG. 2 (c), also for the second system water channel 12, a box type that blocks the water channel at the upstream position and the downstream position of the section B of the second system water channel 12 that can be stopped by the temporary water channel 13. Install the water blocking plug device 30. After installing the box-type water stop plug device 30, the remaining water in the section B is drained by a pump or the like, and the section B is made drought.

  In Fig. 3 (a), the water channel partial area (hatched portion) of section A and section B is removed, and in Fig. 3 (b), the foundation 40 of the new structure is installed in the removed area. In FIG. 3C, for example, a new structure 41 such as a pump building is installed. In the new structure 41, the water flow from the first system water channel 11 and the second system water channel flows in, a new water channel 42 is formed on the downstream side, and the channel is switched from the first system water channel 11 and the second system water channel to the new water channel 42.

  After completion of the new structure 41, as shown in FIG. 4A, the box type water blocking plug device 30 on the upstream side of the section A and the section B is removed. Thereby, as shown in FIG. 4B, the water flow from the 1-system water channel 11 and the 2-system water channel flows into the new structure 41, and the switching to the new water channel 42 is performed. The downstream box type water blocking plug device 30 is also removed. Further, since the detour by the temporary water channel 13 becomes unnecessary, the baffle type water blocking device 20 is installed again at the upstream connection portion of the temporary water channel 13, and the side wall of the primary water channel 11 is restored. After the side wall is restored, the baffle type water blocking device 20 is removed as shown in FIG.

  The configurations and installation forms of the baffle type water blocking plug device 20 and the box type water blocking plug device 30 adopted in the construction of the above-described implementation procedure will be described below.

  FIG. 5 shows the configuration of the panel main body 21 of the baffle type water blocking plug device 20, FIG. 5 (a) is a front view, and FIG. 5 (b) is a plan view. The panel main body 21 is a rectangular panel made of steel, and reinforcing ribs are provided in a grid shape. The panel main body 21 has a shape in which the left and right ends are bent to one side with the vertical direction as an axis. The angle of bending and the width of the bending portion are appropriately designed according to the shape and size of the water channel to be installed, and as illustrated, the angle is a right angle or an obtuse angle, and the width is set on the side wall of the water channel In this case, it is sufficient to maintain an interval that does not hinder the removal of the side wall. In addition, by making the bending angle an obtuse angle, the resistance of the water flow received by the end portion of the panel main body 21 facing the water flow is smaller than in the case of right angle, and the hydraulic load by the water flow on the panel main body 21 and the guide rail 23 is reduced. It can be done. The larger the obtuse angle (the smaller the degree of bending), the weaker the water flow resistance the end of the panel body 21 receives, and the obtuse angle is preferably 135 degrees or more. A water blocking rubber 22 is attached to a necessary area including a surface in contact with the water channel side wall of the panel body 21 and a surface in contact with the water channel bottom.

  FIG. 6 is a view showing an installation form of the baffle type water blocking device 20, FIG. 6 (a) is a plan view, and FIG. 6 (b) is a side view. On the side wall to which the panel body 21 is attached, a guide rail (guide jig) 23 is attached at the installation position according to the dimensions of the panel body 21. The panel body 21 is lifted by, for example, a crane and attached to the side wall along the guide rail 23. The water blocking rubber 22 on the lower surface of the panel body 21 contacts the bottom of the water channel, and the water blocking rubber 22 on the left and right end surfaces of the panel body 21 contacts the sidewall of the water channel.

  The panel main body 21 attached to the side wall is pressed and fixed to the side wall by an extendable hydraulic cylinder 24 which is a main body fixing device. The hydraulic cylinder 24 can be remotely operated by driving a hydraulic pump connected thereto, and both ends thereof are connected to the rear surface of the panel main body 21 and the side wall opposite to the water channel, and the rear surface of the panel main body 21 and the water channel It is installed so as to be distributed between the opposite side walls. By extending the hydraulic cylinder 24 by, for example, motor drive (or manual operation) of the hydraulic pump, the left and right ends of the panel main body 21 are pressed against the side wall of the water channel, and the panel main body 21 is fixed to the side wall. It is crimped against the side wall to shut off water. At least two hydraulic cylinders 24 for vertically pressurizing the side wall are attached to the left and right, respectively. The main body fixing device is not limited to a hydraulic cylinder, but may be another type of device that can be expanded and contracted, such as a water pressure jack, for example.

  Furthermore, in order to press the panel body 21 in the vertical direction, the pedestal 25 is passed between both side walls of the upper opening of the water channel. The pedestal 25 is a steel material and is fixed to the side wall of the water channel on both sides. Then, the hydraulic cylinder 24 is installed so that both ends thereof are connected to the pedestal 25 and the upper end surface of the panel main body 21, and the hydraulic cylinder 24 is extended by motor drive of the hydraulic pump, for example. Is pressed against the bottom of the channel, and the bottom of the channel is shut off. At least two hydraulic cylinders 24 for vertically pressurizing the bottom of the water channel are attached to the left and right. Pressurization in the vertical direction by the installation of the pedestal 25 is shown in FIG. 6 (b). In FIG. 6B, the side walls and the guide rails 23 are not shown.

  FIG. 7 shows the configuration of the panel main body 31 of the box-type water stop plug device 30, FIG. 7 (a) is a front view, and FIG. 7 (b) is a plan view. The panel main body 31 is a steel rectangular panel which approximates the cross-sectional shape of the water channel. The dimensions of the panel body 31 are appropriately designed according to the shape and size of the water channel to be installed. A water blocking rubber 32 is attached to a necessary region including a surface in contact with the bottom of the channel of the panel body 31 and a surface in contact with a jig described later. The panel body 31 is waterproofed by being combined with the jig and attached to the water channel. In addition, fixing brackets 33 protruding from the surface of the panel main body 31 are attached to the panel main body 31, and a plurality of fixing metal fittings 33 are provided on both sides of the panel main body 31. As described later, a hydraulic cylinder 39, which is an expansion and contraction device as a main body fixing device, is fixed to the plurality of fixing brackets 33 so that the expansion and contraction direction of the hydraulic cylinder 39 is perpendicular to the surface of the panel main body 31 The bracket 33 is disposed. FIG. 7 (b) is a plan view showing the hydraulic cylinder and fixture 33.

  FIG. 8 shows the configuration of a jig coupled to the panel main body 31 of the box-type water blocking plug device 30, FIG. 8 (a) is a front view, and FIG. 8 (b) is a cross-sectional view of columnar members constituting the jig. It is. The jig 34 has a pair of columnar members 35 extending and attached to the side wall of the water channel in the vertical direction, and the columnar member 35 has a cross section having a surface facing the side wall of the water channel and a surface facing the panel main body 31 It is formed in an L-shaped shape. FIG. 8 (b) shows a cross-sectional view of the columnar member 35.

  The columnar members 35 are disposed in the vertical direction in contact with the side wall of the water channel, and a water-stop rubber 36 is provided on the surfaces facing and in contact with the side wall. The water blocking rubber 36 is also applied to the lower end surface of the columnar member 35 in contact with the bottom of the water channel. Lower ends of the columnar members 35 are connected to each other by a hydraulic cylinder 37 which is an expansion and contraction device as a jig fixing device. That is, both ends of the hydraulic cylinder 37 are connected to the columnar member 35, and by extending the hydraulic cylinder 37, the columnar member 35 is pressurized and fixed to the side wall, and the space between the side wall and the columnar member 35 becomes watertight. . By assembling the configuration in which the columnar member 35 and the hydraulic cylinder 37 are connected before installation and arranging the assembly in the water channel in the assembled state, the work of connecting the hydraulic cylinder in the water by the worker becomes unnecessary. Significantly improve safety and efficiency. The main body fixing device and the jig fixing device are not limited to hydraulic cylinders, but may be other types of expandable and contractable devices such as water jacks.

  FIG. 9 is a view showing the installation form of the box-type water stop plug device 30, and FIG. 9 (a) is a plan view showing the arrangement of the fixtures 33a with hydraulic cylinder and jigs 34, FIG. 9 (b) is It is a figure which shows the crimp fixing operation | movement by expansion-contraction of the hydraulic cylinder 39. FIG. On the side wall to which the jig 34 is attached, a guide rail (guide jig) 38 is attached at the installation position according to the dimension of the jig 34. The jig 34 is lifted by, for example, a crane and attached to the side wall along the guide rail 38. The water blocking rubber 36 on the lower end face of the jig 34 contacts the bottom of the water channel, and the water blocking rubber 36 on the surface opposite to the side wall contacts the sidewall of the water channel.

  After the jig 34 is installed at a predetermined position, the hydraulic cylinder 37 connecting the lower end portion of the columnar member 35 is extended by motor drive, and the columnar member 35 is pressed and fixed to the side wall. The hydraulic cylinder is disposed and extended so as to cross the hydraulic cylinder 37 between the columnar members 35 at the upper position as well, for example, near the middle position of the height of the columnar members 35 in addition to the lower end portion of the columnar member 35 Press at least two places.

  After the jig 34 is watertightly fixed to the water channel, the panel body 31 is watertightly fixed to the jig 34. The fixtures 33 are attached to a plurality of locations on the surface 31 a of the panel main body 31 facing the columnar members 35, and the fixtures 33 are attached such that a gap is formed between the surface 31 a of the panel body 31 and the fixtures 33. Then, the panel main body 31 is suspended and the panel main body 31 is attached to the jig 34 so that the jig 34 is sandwiched in the gap between the panel main body 31 and the fixing bracket 33 by lifting the panel main body 31 lifted by a crane.

  A hydraulic cylinder 39, which is an expansion and contraction device, is attached to the fixing bracket 33a, and the hydraulic cylinder 39 is connected to the hydraulic pump and a gap S (see FIG. 9) between the surface 31a of the panel main body 31 and the fixing bracket 33. And (b) are arranged to extend). More specifically, as shown in FIG. 9B, the hydraulic cylinder 39 abuts on the opposite surface of the surface of the pillar 35 facing the panel main body 31 and extends to fill the gap S, The panel main body 31 is pressed against the surface of the columnar member 35 facing the panel main body 31. That is, the hydraulic pump is driven by a motor to extend the hydraulic cylinder 39, whereby the panel main body 31 is attracted to the columnar member 35 by being pressurized in the direction in which the gap between the panel main body 31 and the fixing bracket 33 widens. The water blocking rubber 32 of the panel main body 31 is pressed against the columnar member 35, and the panel main body 31 is watertightly fixed to the columnar member 35. The fixtures 33 with hydraulic cylinders are arranged at least two places (four places in total) in the vertical direction at portions facing the columnar members 35 on the left and right sides of the panel main body 31 respectively. In addition, in FIG.7 and FIG.10, the example in which the fixing metal fitting 33 is arrange | positioned at right and left 3 places, a total of 6 places is shown.

  Furthermore, in order to press the panel body 31 in the vertical direction, the pedestal is passed between both side walls of the upper opening of the water channel. Then, both ends of the hydraulic cylinder are connected to the pedestal and the upper end surface of the panel main body 31, and the hydraulic cylinder is extended by motor drive, for example, so that the lower surface of the panel main body 31 is pressed against the bottom of the water channel. Stop the water.

  FIG. 10 is a view showing pressurization in the vertical downward direction of the panel main body 31. As shown in FIG. Just above the panel main body 31 fixed to the jig 34, a pedestal 40 straddling both sides of the water channel is fixed to the water channel, and the hydraulic cylinder 44 has both the pedestal 40 and the upper end surface of the panel main body 31 By connecting and extending, the panel main body 31 is vertically pressed downward. The U-shaped receptacles 40 are made of steel, and at least two hydraulic cylinders 44 for pressing vertically downward with respect to the bottom of the water channel are attached to the left and right.

  Next, another installation of the above-described baffle-type water blocking device 20 will be described. FIG. 11 and FIG. 12 are diagrams showing the construction procedure of another construction for switching the flow path by droughting the water channel. The other construction is a construction in which a branch is newly connected to the water channel without stopping the flow of water flowing through an underground water channel (pipe) such as an upper water pipe or a sewer pipe buried underground. The mold water blocking plug device 20 is installed on a side wall portion to which the branch passage is connected, and blocks the inflow of the water flow to the connection point to cause a drought.

  In the construction procedure, first, in FIG. 11A, excavating between the water channel 70 and the new structure 71 (hatched portion in FIG. 11A), the connection point on the water channel 70 side and the new structure 71 side Expose the connection points. In FIG. 11B, the upper portion (hatched portion in FIG. 11B) of the connection point of the water channel 70 is removed to form an upper opening. In FIG. 11 (c), the baffle type water blocking device 20 is installed at the connection point. This installation form will be described later.

  12 (a), the remaining water between the baffle type water blocking device 20 and the side wall (connection point) of the water passage 70 is pumped out, and then in FIG. 12 (b), the baffle type water blocking device 20 The side wall portion of the water channel 70 surrounded by the above is removed, and in FIG. 12C, the branch pipe 72 is installed. Although not illustrated, after installation of the branch pipe 72, coking processing is performed on connection points on both ends of the branch pipe 72, and the baffle type water blocking device 20 is removed. Further, the upper portion of the water channel 70 removed in FIG. 11 (b) is returned and closed, and the entire excavated area is backfilled.

  FIG. 13 is a view showing another installation form of the baffle type water blocking device 20. As shown in FIG. 13 (a) is a plan view, and FIG. 13 (b) is a cross-sectional view. The configuration of the main body panel 21 of the baffle type water blocking plug device 20 adopted in the above-mentioned other construction is the same as the configuration of FIG. 5, and the left and right ends of the main body panel 21 are side walls And a rectangular shaped panel, which is arranged opposite to the side wall. The difference between the installation mode of FIG. 13 and the installation mode shown in FIG. 6 is the installation mode of the hydraulic cylinder which is the main body fixing device. Specifically, jigs 73 are fixed and attached to each of the left and right ends of the main body panel 21, and the jig 73 is configured to have an extension portion 73 a extending from the main body panel 21 to the back of the side walls. Be done.

  A plurality of hydraulic cylinders 74, which are telescopic devices, are arranged in series in the vertical direction in each of the extension portions 73a of the jigs 73 on the left and right sides. The hydraulic cylinders 74 include the extension portions 73a of the jig 73 and the back surface of the side wall. It is attached to the extension part 73a in the form which expands-contracts between. Then, by the extension of the hydraulic cylinder 74, the space between the extension portion 73a and the back surface of the side wall is expanded, so that the main body panel 21 is attracted to the side wall, and as a result, the left and right ends of the main body panel 21 are pressed against the side wall. 21 is fixed to the side wall.

  Also in the construction procedure of the above-mentioned other construction, the guide rail (guide jig) 23 is attached in advance to the installation position on the side wall to which the panel main body 21 is attached in accordance with the dimensions of the panel main body 21 The main body 21 is lifted by, for example, a crane and attached to the side wall along the guide rail 23 from the upper opening 70a. The water blocking rubber 22 on the lower surface of the panel main body 21 contacts the bottom of the conduit, and the water blocking rubbers 22 on both left and right end surfaces of the panel main body 21 contact the side wall of the water channel.

  Furthermore, in order to press the panel main body 21 in the vertical direction, similarly to the above-described example, a pedestal whose ends are fixed across the panel main body 21 is provided to connect the pedestal and the panel main body 21 The lower surface of the panel body 21 is pressed against the bottom of the water channel by extending the hydraulic cylinder 74 by, for example, a motor drive, and the water channel bottom is stopped.

  Next, a second embodiment of the water blocking plug device employed in the construction for drought of the water channel will be described. In the second embodiment, it is a water blocking plug device used for an underground water channel (pipe line) such as an upper water pipe or a sewage pipe buried underground, and the pipe repair, replacement or flow path switching It is arranged at both ends of the pipeline of the section where it carries out, blocks the inflow of the water flow to the pipeline section, and makes the pipeline section dry.

  FIG. 14 is a view showing a configuration example of the water blocking plug device in the second embodiment example, FIG. 14 (a) is a side view, and FIG. 14 (b) is a water blocking plug device main body with the caster portion omitted. It is a front view of. The water blocking plug device 50 according to the second embodiment has a circular panel main body 51 concentrically disposed inside a circular cross section pipe, and is disposed all around the outer peripheral surface of the panel main body 51 and injects fluid. Or a rubber-made ring-shaped bag (balloon) 52 which can be expanded or contracted by discharging, and a ring-shaped flange panel 53 which protrudes in the outer peripheral direction around the entire circumference from both sides of the panel body 51; Is arranged so as not to be offset with respect to the inner surface of the flange panel 53, and the outer diameter thereof is expanded by the injection of the fluid and is pressed against the inner surface of the channel to close the channel. The flange panel 53 is provided with radially extending reinforcing ribs 53a. A water conduction hole 54 is provided at the center of the panel main body 51, and water conduction holes 54 of the water blocking plug devices 50 installed at both ends of the section to be constructed are connected by a temporary conduit via a conduit connection flange 59. , A stream of water flows in the conduit. The method of connecting the construction object section with a temporary conduit is described in Japanese Patent Publication No. 5066658. In addition, a lid (not shown) for opening and closing the water conduction hole 54 is attached. An example of the configuration of the lid is described in Japanese Patent No. 4081512. The caster 55 is a moving means for moving the water blocking plug device 50 introduced into the underground pipeline from the ground to the section to be constructed along the pipeline.

  FIG. 15 is a partial cross-sectional view of the water blocking plug device 50 including the periphery of the ring-shaped bag 52, and is a detailed cross-sectional view of the dotted-line encircling portion A of FIG. The ring-shaped bag body 52 is made of rubber having a predetermined strength, and preferably, by using a so-called twill cloth for reinforcement, it is possible to prevent deformation due to excessive water pressure and air pressure. After the water blocking plug device 50 is installed at a predetermined position, a fluid such as air is pressed into the ring-shaped bag 52 and expanded, whereby the ring-shaped bag 52 is in close contact with the inner wall of the conduit and the water is shut off. .

A metal fitting 56 such as a bolt is fixedly attached to the surface of the ring-shaped bag body 52 in contact with the flange panel 53. Fitting 56, as shown in FIG. 1 5, are equally spaced mounted a plurality of locations over the entire circumference. The position of the flange panel 53 corresponding to the mounting position of the metal fitting 56 is such that the hole 57 through which the metal fitting 56 passes is bored, and by fitting the metal fitting 56 into the hole 57 and tightening with the nut 58 , And fixed so as not to be displaced with respect to the flange panel 53. When a fluid such as air is pressed into the ring-shaped bag 52 and expanded, the ring-shaped bag 52 expands without kinking and contacts the flange panel 53 evenly, causing the ring-shaped bag 52 to burst or fail. It is possible to prevent water leakage due to lack of adhesion resulting from uniform expansion. In particular, when the waterproof plug device 50 is applied to waterproofing of a large diameter pipe having a diameter of more than 4000 mm, the ring-shaped bag body 52 whose circumferential length is relatively long is uniform without distortion. Expansion can be secured.

  Further, a ring-shaped rubber 60 is provided on the outer peripheral edge of the flange panel 53 so as to be in contact with the inner wall surface of the conduit along the entire circumference. A ring pressing flange 61 supporting the ring rubber 60 is attached to the outer peripheral edge of the flange panel 53 by a bolt 62, and the ring rubber 60 abuts the ring pressing flange 61, and the ring pressing flange 61 is a flange panel by a bolt 62 The ring-shaped rubber 60 is pressed against the flange panel 53 by being tightened and pressed to the 53 side. The outer peripheral edge of the flange panel 53 is provided with an inclined member 64 having an inclined surface against which the ring-shaped rubber 60 is pressed, and the ring-shaped rubber 60 is pressed against the inclined surface 64 of the flange panel 53 by tightening the bolt 62. By pressing the ring-shaped rubber 60, the cross section of the ring-shaped rubber 60 is deformed, and the ring-shaped rubber 60 is closely pressed against the inner wall surface of the conduit, and the gap between the inner wall surface of the conduit and the outer peripheral edge of the flange panel 53 is blocked. And the pipeline is blocked. That is, the ring-shaped rubber 60 also carries out water stopping of the pipe, and a double water stopping structure is realized by both the ring-shaped bag 52 and the ring-shaped rubber 60, and reliable water stopping of the pipe is realized. .

  The present invention is not limited to the above-described embodiment, and various changes and design changes that may occur to those skilled in the art without departing from the scope of the present invention are possible. Of course, it is also included in the present invention.

  11: 1 water channel, 12: 2 water channel, 13: temporary water channel, 14: temporary water channel, 15: gate, 20: baffle type water blocking plug device, 21: panel main body, 22: water blocking rubber, 23: guide rail (Guide jig), 24: Hydraulic cylinder, 25: Receiving block, 30: Box type water blocking device, 31: Panel body, 32: Water blocking rubber, 33: Fixing bracket, 34: Jig, 35: Column member , 36: waterproof rubber, 37: hydraulic cylinder, 38: guide rail (guide jig), 39: hydraulic cylinder, 40: receptacle, 44: hydraulic cylinder, 50: waterproof plug device, 51: panel body, 52 A ring-shaped bag 53: flange panel 54: water-conveying hole 56: bracket 57: hole 58: nut 59: conduit connection flange 60: ring-shaped rubber 61: ring-retaining flange 62: bolt 64: Diagonal member, 70: waterways, 71: new structures, 72: branch pipe 73: jig, 74: hydraulic cylinder

Claims (4)

A circular panel body concentrically disposed within a circular cross section pipe line,
A cylindrical ring-shaped bag body disposed on the entire outer peripheral surface of the panel main body and capable of expanding or contracting by injecting or discharging a fluid, and having an annular shape with an uninterrupted cross section perpendicular to the circumferential direction ;
Ring-shaped flange panels protruding in the outer circumferential direction around the entire circumference from both sides of the panel body ;
And a plurality of first bolts attached to the ring bag body at a head thereof ;
The ring-shaped bag body is fixedly disposed so as not to be shifted with respect to the inner surface of the flange panel, and the outer diameter thereof is expanded by the injection of fluid and pressed against the inner surface of the channel to close the channel.
The water blocking plug device according to claim 1 , wherein the ring-shaped bag body is fixed to the flange panel at equal intervals over the entire circumference by the plurality of first bolts . A ring-shaped rubber is provided at the outer peripheral edge of the flange panel and in contact with the inner surface of the conduit over the entire circumference;
By pressing the ring-shaped rubber against the flange panel, a gap between the inner surface of the conduit and the outer peripheral edge of the flange panel is closed to close the conduit. Water plug device described in.   The water blocking plug device according to claim 2, wherein an inclined surface on which the ring-shaped rubber is pressed is provided on an outer peripheral edge portion of the flange panel. The ring retainer flange for supporting the ring-shaped rubber is attached to the outer peripheral edge of the flange panel by a second bolt, said ring-shaped rubber by tightening the second bolt pressed against the inclined surface of the flange panel The water blocking plug device according to claim 3, characterized in that:

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