Guide pipe end plugging structure in pipeline trenchless repair and construction method of guide pipe end plugging structure

Abstract

The invention discloses a pipe end plugging structure in non-excavation repair of a pipeline and a construction method thereof, the structure comprises a plugging flow guide body which is vertical to the pipeline and plugged between the end of a middle pipe and the pipeline and a masonry wall body on the plugging flow guide body, the plugging flow guide body comprises a semicircular cake-shaped steel plate groove; the guide cylinder vertically penetrates through the semicircular cake-shaped steel plate groove, a flange plate and bolt holes annularly arrayed in the flange plate are arranged on the outer side face of the guide cylinder, the flange plate penetrates through the bolt holes through a sealing gasket and flange bolts to be connected with a cylinder sealing plate in a sealing mode, and the semicircular cake-shaped steel plate groove is filled with plain concrete. The method is not affected by water flow scouring, the construction efficiency can be improved, the construction quality can be improved, and the construction period can be shortened.

Description

Technical Field

[0001] The invention relates to the field of pipeline trenchless repair construction, and in particular to a conduit end plugging structure in pipeline trenchless repair and a construction method thereof. Background Art

[0002] In the trenchless pipeline repair construction, the water flow in the pipeline needs to be diverted by laying a middle conduit to create a dry warehouse environment for pipeline repair. The middle conduit is composed of multiple pipe sections connected one by one by flange bolts in the pipeline, and supports are set to make it coaxial with the pipeline. After the middle conduit is laid, the gap between the ends of the middle conduit and the pipeline needs to be blocked to cut off the water flow in the part of the pipeline to be repaired. The existing blocking structure is built into a blocking wall using materials such as bricks, cement, and clay. The construction time is under low peak flow of the pipeline, and the water flow in the pipeline is small, but it is still a water-carrying operation. During the masonry process, the water flow continues to accumulate as the masonry height increases and causes erosion of the masonry materials, resulting in more masonry cementitious materials being washed to the downstream pipeline, affecting the blocking quality, and is time-consuming and inefficient. The underwater masonry construction is difficult. Summary of the invention

[0003] The purpose of the present invention is to provide a pipeline non-excavation repair center conduit end plugging structure and a construction method thereof, so as to solve the problems of the center conduit end sealing structure being difficult to lay due to the influence of water flow during water-carrying masonry, masonry materials being easily washed away, long masonry period and poor masonry quality.

[0004] In order to solve the above technical problems, the present invention provides a pipeline trenchless repair middle conduit end sealing structure, including a sealing guide body perpendicular to the pipeline and between the end of the middle conduit and the pipeline, and a masonry wall thereon, the sealing guide body including a semicircular pancake-shaped steel plate groove, a guide tube vertically passing through the semicircular pancake-shaped steel plate groove, the outer side of the guide tube is provided with a flange plate and a circular array of bolt holes thereon, the flange plate is sealed and connected to a sealing tube plate through a sealing gasket and flange bolts passing through the bolt holes, and the semicircular pancake-shaped steel plate groove is filled with plain concrete.

[0005] Furthermore, in the pipeline trenchless repair provided by the present invention, the conduit end plugging structure, the plugging guide body also includes a rubber pad arranged on the arc surface of the semicircular pancake-shaped steel plate groove.

[0006] Furthermore, in the pipeline trenchless repair provided by the present invention, the conduit end plugging structure, the plugging diversion body also includes two lifting ears pre-buried in the plain concrete and exposed on the upper surface of the semicircular pancake-shaped steel plate groove.

[0007] Furthermore, in the pipeline trenchless repair provided by the present invention, the conduit end plugging structure, the plugging guide body extends upward from the inner surface of the lower chord of the pipeline.

[0008] Furthermore, in the pipeline trenchless repair middle conduit end plugging structure provided by the present invention, the semicircular pancake-shaped plugging guide body extends upward from the lower chord inner surface of the pipeline to the lower chord outer surface of the middle conduit.

[0009] Furthermore, in the pipeline trenchless repair conduit end plugging structure provided by the present invention, the guide tubes are two evenly distributed.

[0010] In order to solve the above technical problems, the present invention also provides a construction method of a conduit end plugging structure in a trenchless pipeline repair, comprising:

[0011] The plugging guide body is manufactured according to the cross-sectional dimension information of the pipeline to be extended and the middle conduit;

[0012] The plugging guide body without sealing tube plate is hoisted and lowered to the ends of both ends of the middle guide tube through the riding well, the water flow in the lower part of the middle guide tube is cut off, and the water is drained through the guide tube of the plugging guide body;

[0013] Construct a masonry wall on the sealing diversion body, and weld a sealing wall board covering the surface on the water-facing surface of the masonry wall;

[0014] The sealing tube plate is sealed and connected to the flange of the guide tube through sealing gaskets and flange bolts to form a middle duct end sealing structure. The middle duct end sealing structure is used to cut off the pipeline water flow and temporarily drain the water through the middle duct.

[0015] Furthermore, the construction method of the conduit end plugging structure in the trenchless repair of the pipeline provided by the present invention comprises welding the sealing wall plate to the sealing guide body.

[0016] In order to solve the above technical problems, the present invention also provides a pipeline trenchless repair method, comprising:

[0017] The above-mentioned construction method for the conduit end plugging structure in the trenchless pipeline repair is used to construct the conduit end plugging structure;

[0018] Extract the residual water in the pipe between the middle pipe end plugging structures at both ends of the middle pipe to form a dry warehouse environment for the pipe to be repaired;

[0019] A plurality of pipe segments are welded in the pipe to be repaired to form an inner liner pipe coaxial with the pipe;

[0020] Perform back-wall grouting between the inner liner and the pipe to be repaired, and use the grouting process to make the pipe and the inner liner form an integral whole;

[0021] Remove the plugging structure at the end of the middle conduit;

[0022] Remove the middle duct and restore pipeline drainage.

[0023] Furthermore, in the trenchless pipeline repair method provided by the present invention, the construction sequence of the method for removing the plugging structure at the end of the middle conduit is opposite to that of the method for installing it.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention provides a pipeline trenchless repair conduit end plugging structure and a construction method thereof. When the conduit end plugging structure is constructed during water-carrying operation in the pipeline to be repaired, a plugging guide body without a sealing tube plate is hoisted and lowered to the ends of the conduit at both ends through a riding well to cut off the water flow at the lower part of the conduit and drain the water from the guide tube thereon. The weight of the plugging guide body is increased by filling the semicircular pancake-shaped steel plate groove with plain concrete, thereby avoiding the influence of displacement of the plugging guide body caused by the flow force of the water flow in the pipeline, and ensuring the plugging guide body. The stability of the fluid at the installation position; when constructing a masonry wall on the sealing diversion body, the water with low peak flow in the pipeline is drained through the middle duct and the diversion tube, and the masonry wall above the sealing diversion body will not be washed away by the water flow in the pipeline, which has the advantages of small material loss and material saving; after the construction of the masonry wall, the sealing tube plate is installed on the flange plate of the diversion tube through flange bolts and sealing gaskets to form a middle duct end sealing structure, thereby ensuring the construction efficiency and construction quality of the middle duct end sealing structure and shortening the construction period. The sealing gasket ensures the sealing connection of the sealing tube plate on the flange of the guide tube to avoid water leakage; the middle duct end sealing structure realizes the cutoff of the water flow in the lower part of the middle duct, so that all the water flow in the pipeline is temporarily discharged by the middle duct, so that the pipeline to be repaired forms a dry warehouse environment through the middle duct end sealing structure at both ends of the middle duct, so that while ensuring the normal operation of the pipeline, the inner liner construction and the back wall grouting are carried out in the pipeline to realize the non-excavation repair construction of the pipeline; it avoids the traditional process of directly using bricks, cement, clay and other materials to construct walls on the sinusoidal inner surface of the pipeline upward. When constructing at the lower part of the middle duct, the scouring and accumulation phenomenon caused by the water flow leads to the difficulty of masonry wall construction, the waste of masonry materials due to scouring, the long masonry period and the poor masonry quality. It has the advantages of high construction efficiency, short construction period, low construction difficulty and masonry materials will not be scoured.

[0026] The construction method of the conduit end sealing structure in the trenchless repair of pipelines provided by the present invention includes welding a sealing wall plate covering the surface on the water-facing surface of a masonry wall, thereby preventing the masonry wall from being eroded by water flow and increasing its service life.

[0027] The trenchless pipeline repair method provided by the present invention can be quickly disassembled and assembled by means of the middle conduit end plugging structures arranged at both ends of the middle conduit, and can ensure the construction of the inner liner pipe in a dry warehouse environment between the pipelines to be repaired, thereby improving the repair efficiency of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 to Figure 2Schematic diagram of the three-dimensional structure of the plugging diversion body;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the plugging guide body without installing the sealing tube plate;

[0030] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the middle catheter end plugging structure;

[0031] Figure 5 It is a side view structural schematic diagram of the middle catheter end plugging structure;

[0032] Figure 6 It is a schematic diagram of the cross-sectional structure of the plugging structure of the middle catheter end;

[0033] As shown in the figure:

[0034] 1. Middle conduit end plugging structure; 100. plugging guide body; 101. semicircular pancake steel plate groove; 102. guide tube; 103. flange; 104. bolt hole; 105. sealing gasket; 106. flange bolt; 107. sealing tube plate; 108. plain concrete; 109. rubber pad; 110. lifting ear; 200. masonry wall; 300. sealing wall board;

[0035] 2. Pipeline;

[0036] 3. Middle catheter;

[0037] 4. Bracket;

[0038] 5. Dry storage section;

[0039] 6. Horse Riding Well. DETAILED DESCRIPTION

[0040] The present invention is described in detail below in conjunction with the accompanying drawings: The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0041] Please refer to Figures 1 to 4 and Figure 6The embodiment of the present invention provides a pipeline trenchless repair middle conduit end plugging structure 1, comprising a plugging guide body 100 perpendicular to the pipeline 2 and plugging between the end of the middle conduit 3 and the pipeline 2, and a masonry wall 200 thereon, the plugging guide body 100 comprises a semicircular pancake steel plate groove 101, a guide tube 102 vertically passing through the semicircular pancake steel plate groove 101, the outer side of the guide tube 102 is provided with a flange 103 and a circular array of bolt holes 104 thereon, the flange 103 is sealed and connected to a sealing tube plate 107 through a sealing gasket 105 and flange bolts 106 passing through the bolt holes 104, and the semicircular pancake steel plate groove 101 is filled with plain concrete 108. The semicircular pancake steel plate groove 101 is welded by steel components, and the sealing tube plate 107 is a steel plate.

[0042] Please refer to Figures 1 to 6 The embodiment of the present invention also provides a construction method of a conduit end plugging structure 1 in a trenchless pipeline repair, comprising:

[0043] Step 401 : manufacturing the plugging guide body 100 according to the cross-sectional dimension information of the pipeline 2 and the middle conduit 3 to be extended.

[0044] Step 402 , the plugging guide body 100 without the sealing tube plate 107 is hoisted and lowered to the ends of the middle conduit 3 through the riding well 6 , the water flow at the lower part of the middle conduit 3 is cut off, and the water is drained through the guide tube 102 of the plugging guide body 100 .

[0045] Step 403, construct a masonry wall 200 on the blocking diversion body 100, and weld a sealing wall board 300 covering the surface of the masonry wall 200 on the water-facing surface thereof. The sealing wall board 300 is a steel plate, and in order to ensure the reliable connection of the sealing wall board 300, the sealing wall board 300 can be welded to the blocking diversion body 100. Steel parts can also be embedded in the masonry wall 200 and welded to the sealing wall board 300.

[0046] Step 404 , sealingly connect the sealing tube plate 107 to the flange 103 of the guide tube 102 through the sealing gasket 105 and the flange bolts 106 to form a middle conduit end plugging structure 1 , cut off the water flow of the pipeline 2 through the middle conduit end plugging structure 1 and temporarily drain the water through the middle conduit 3 .

[0047] The pipeline trenchless repair conduit end plugging structure 1 and the construction method thereof provided by the embodiment of the present invention, when the conduit end plugging structure 1 is constructed in the pipeline 2 to be repaired with water, the plugging guide body 100 without the sealing tube plate 107 is hoisted and lowered to the ends of the middle conduit 3 through the riding well 6 to cut off the water flow at the lower part of the middle conduit 3 and the guide tube 102 thereon drains water, and the weight of the plugging guide body 100 is increased by filling the semicircular pancake-shaped steel plate groove 101 with plain concrete 108, thereby avoiding the influence of the flow force of the water flow in the pipeline 2 on the displacement of the plugging guide body 100, and ensuring the plugging guide body 100 Stability at the installation position; when constructing the masonry wall 200 on the sealing guide body 100, the water with low peak flow in the pipeline 2 is drained through the middle duct 3 and the guide tube 102, and the masonry wall 200 above the sealing guide body 100 will not be washed away by the water flow in the pipeline 2, which has the advantages of small material loss and material saving; after the construction of the masonry wall 200, the sealing tube plate 107 is installed on the flange plate 103 of the guide tube 102 through the flange bolts 106 and the sealing gasket 105 to form the middle duct end sealing structure 1, thereby ensuring the construction efficiency and construction quality of the middle duct end sealing structure 1 and shortening the construction period. The sealing gasket 105 ensures the sealing connection of the sealing tube plate 107 on the flange 103 of the guide tube 102 to avoid water leakage; the middle duct end plugging structure 1 realizes the cutoff of the water flow in the lower part of the middle duct 3, so that all the water flow in the pipeline 2 is temporarily discharged by the middle duct 3, so that the pipeline 2 to be repaired forms a dry warehouse environment through the middle duct end plugging structure 1 at both ends of the middle duct 3, so that under the condition of ensuring the normal operation of the pipeline 2, the inner liner construction and the back wall grouting are carried out in the pipeline 2 to realize the non-excavation repair construction of the pipeline 2; it avoids the traditional process of directly using bricks, cement, clay and other materials to construct the wall 200 on the sinusoidal inner surface of the pipeline 2 upward, and the scouring and accumulation phenomenon caused by the water flow during the construction at the lower part of the middle duct 3, resulting in great difficulty in building the wall 200, easy scouring of masonry materials resulting in waste, long masonry period and poor masonry quality. It has the advantages of high construction efficiency, short construction period, low construction difficulty and masonry materials will not be scoured.

[0048] Please refer to Figure 5 The construction method of the conduit end sealing structure 1 in the trenchless repair of the pipeline provided in the embodiment of the present invention welds a sealing wall plate 300 covering the surface of the water-facing surface of the masonry wall 200, which can prevent the masonry wall 200 from being eroded by water flow and improve the service life of the masonry wall 200.

[0049] Please refer to Figure 1 , Figure 2 and Figure 4In order to avoid leakage between the sealing guide body 100 and the pipeline 200, the embodiment of the present invention provides a pipeline trenchless repair catheter end plugging structure 1 and a construction method thereof, wherein the sealing guide body 100 further includes a rubber pad 109 arranged on the arc surface of the semicircular pancake-shaped steel plate groove 101. The rubber pad 109 is used to achieve sealing between the two to avoid water leakage.

[0050] Please refer to Figure 1 to Figure 2 In order to facilitate the lifting of the plugging guide body 100, the embodiment of the present invention provides a pipeline trenchless repair conduit end plugging structure 1 and a construction method thereof, wherein the plugging guide body 100 also includes two lifting ears 110 pre-buried in the plain concrete 108 and exposed on the upper surface of the semicircular pancake-shaped steel plate groove 101. The two lifting ears 110 facilitate the connection with lifting equipment such as a car crane, ensure balanced lifting, and ensure the safety of lifting.

[0051] Please refer to Figures 4 to 5 In order to ensure the effect of blocking the water flow in the lower part of the middle conduit 3 by the plugging guide body 100, the middle conduit end plugging structure 1 for trenchless repair of pipelines and the construction method thereof provided by the embodiment of the present invention, the plugging guide body 100 extends upward from the inner surface of the lower chord of the pipeline 2, and in order to ensure the stability of the plugging guide body 100, the upper end surface of the plugging guide body 100 can extend to the outer surface of the lower chord of the middle conduit 3. Then the upper end surface of the plugging guide body 100 can be attached to the flange of the middle conduit 3, thereby improving the stability of the plugging guide body 100.

[0052] Please refer to Figures 1 to 4 In order to discharge the water in the pipeline 2 smoothly after the plugging guide body 100 is hoisted and installed, and avoid accumulating above the upper end surface of the plugging guide body 100, the pipeline trenchless repair conduit end plugging structure 1 and the construction method thereof provided by the embodiment of the present invention have two evenly distributed guide tubes 102. The two guide tubes 102 increase the flow rate of the water in the pipeline 2, and avoid the water flow from accumulating upwards when it cannot be discharged in time, which affects the construction of the upper masonry wall 200.

[0053] The embodiment of the present invention further provides a pipeline trenchless repair method, which may include:

[0054] Step 501 , constructing the conduit end plugging structure 1 by using the above-mentioned construction method of the conduit end plugging structure 1 in the pipeline trenchless repair.

[0055] Step 502: extract the residual water in the pipe 2 between the middle pipe end plugging structures 1 at both ends of the middle pipe 3 to form a dry warehouse environment for the pipe 2 to be repaired. The middle pipe 3 is supported in the pipe 2 by a bracket.

[0056] Step 503 , a plurality of pipe segments are welded inside the pipe 2 to be repaired to form an inner liner pipe coaxial with the pipe 2 .

[0057] Step 504, performing back wall grouting between the inner liner pipe and the pipe 2 to be repaired, and integrating the pipe 2 and the inner liner pipe through the grouting process.

[0058] Step 505, dismantle the middle conduit end plugging structure 1, and the dismantling method is opposite to the construction sequence of the installation method, that is, the dismantling sequence is: plugging the sealing tube plate 107 and its related components of the diversion body 100 - the sealing wall plate 300 - the masonry wall 200 - plugging the remaining components of the diversion body 100.

[0059] Step 506, remove the middle conduit 3 to restore the drainage of the pipeline 2.

[0060] The trenchless pipeline repair method provided by the embodiment of the present invention can be quickly disassembled and assembled by setting the middle pipe end plugging structure 1 at both ends of the middle pipe 3, and can ensure the construction of the inner liner pipe in a dry warehouse environment between the pipes 2 to be repaired, thereby improving the repair efficiency of the pipe 2.

[0061] The present invention is not limited to the above-mentioned specific implementation modes. Obviously, the above-mentioned embodiments are only some embodiments of the embodiments of the present invention, but not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention. Those skilled in the art can make other levels of modifications and changes to the present invention. In this way, if these modifications and changes of the present invention fall within the scope of the claims of the present invention, the present invention is also intended to include these changes and changes.

Claims

1. A pipe end plugging structure for trenchless pipe repair, characterized in that: It includes a sealing guide body between the end of the middle conduit and the pipeline and a masonry wall thereon, the sealing guide body includes a semicircular pancake-shaped steel plate groove, a guide tube vertically passing through the semicircular pancake-shaped steel plate groove, the outer side of the guide tube is provided with a flange plate and a circular array of bolt holes thereon, the flange plate is sealed and connected to a sealing tube plate through a sealing gasket and flange bolts passing through the bolt holes, and the semicircular pancake-shaped steel plate groove is filled with plain concrete.

2. The pipe end plugging structure in trenchless pipeline repair according to claim 1 is characterized in that: The plugging guide body also includes a rubber pad arranged on the arc surface of the semicircular pancake-shaped steel plate groove.

3. The pipe end plugging structure in trenchless pipeline repair according to claim 1 is characterized in that: The blocking and guiding body also includes two hanging ears which are pre-buried in the plain concrete and exposed on the upper surface of the semicircular pancake-shaped steel plate groove.

4. The pipe end plugging structure in trenchless pipeline repair according to claim 1 is characterized in that: The plugging guide body extends upward from the inner surface of the lower chord of the pipeline.

5. The pipe end plugging structure in trenchless pipeline repair according to claim 4 is characterized in that: The semicircular pancake-shaped plugging guide body extends upward from the inner surface of the lower chord of the pipeline to the outer surface of the lower chord of the middle conduit.

6. The pipe end plugging structure in trenchless pipeline repair according to claim 1 is characterized in that: The number of the guide tubes is two and they are evenly distributed.

7. A construction method for a pipe end plugging structure in a trenchless pipeline repair according to any one of claims 1 to 6, characterized in that: include: The plugging guide body is manufactured according to the cross-sectional dimension information of the pipeline to be extended and the middle conduit; Without installing the sealing tube plate, the plugging guide body is hoisted and lowered to the ends of both ends of the middle guide tube through the riding well, and the water is drained through the guide tube of the plugging guide body; Construct a masonry wall on the blocking diversion body, and weld a sealing wall plate 130 covering the surface on the water-facing surface of the masonry wall; The sealing tube plate is sealed and connected to the flange of the guide tube through sealing gaskets and flange bolts to form a middle duct end sealing structure. The middle duct end sealing structure is used to cut off the pipeline water flow and temporarily drain the water through the middle duct.

8. The construction method of the conduit end plugging structure in the trenchless pipeline repair according to claim 7 is characterized in that: Weld the sealing wall plate to the sealing diversion body.

9. A pipeline trenchless repair method, characterized in that: include: The conduit end plugging structure is constructed by using the construction method of the conduit end plugging structure in the pipeline trenchless repair as described in claim 7; Extract the residual water in the pipe between the middle pipe end plugging structures at both ends of the middle pipe to form a dry warehouse environment for the pipe to be repaired; A plurality of pipe segments are welded in the pipe to be repaired to form an inner liner pipe coaxial with the pipe; Perform back-wall grouting between the inner liner and the pipe to be repaired, and use the grouting process to make the pipe and the inner liner form an integral whole; Remove the plugging structure at the end of the middle conduit; Remove the middle duct and restore pipeline drainage.

10. The pipeline trenchless repair method according to claim 9, characterized in that: The method for removing the plugging structure at the end of the middle conduit is opposite to the construction sequence of the installation method.

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