A connection sealing device for a pipe jacking port and a shaft joint part and a construction method thereof

Abstract

The present application relates to a kind of pipe port and shaft junction part connection sealing device and construction method, belong to urban pipe network construction technical field. Including shaft wall, pipe joint end and the steel plate ring fixed in the end face of shaft wall, pipe joint end simultaneously;The gap between shaft wall and pipe joint end is also arranged with water stop, and the outer end of water stop is fixedly connected with the steel plate ring.The present application utilizes water stop and steel plate ring by the mode of bolt connection fixed with shaft wall and pipe joint end, solves the leakage problem that appears in the connecting position of pipe joint end and shaft wall. Through bolt connection and fixed with steel plate ring, the sealing of pipe joint end and shaft wall can be realized quickly, installation and disassembly operation is simple, and periodic sealing inspection and water stop replacement maintenance can be realized.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of top pipe port and the connecting sealing device of shaft junction and construction method, belong to urban pipe network construction technical field. BACKGROUND

[0002] At present, the infrastructure such as urban underground pipe network develops rapidly in China, and the underground pipe network construction technology by pipe jacking method becomes the main construction method of urban power, water supply and drainage engineering. Due to the demand of urban pipe network construction, pipe jacking method often needs to build shaft structure, which provides working space for pipe jacking equipment personnel on one hand, and needs the counterforce of shaft wall to push the pipe jacking equipment to complete the pipe jacking construction on the other hand. Among them, after the completion of pipe jacking work, the last pipe section needs to be closed with the shaft wall to prevent the seepage of underground water behind the shaft wall and the pipe section into the underground pipe network, which affects the normal operation of underground pipe network infrastructure. Therefore, a sealing device needs to be arranged between the last pipe section and the shaft wall to effectively prevent the seepage of underground water in the rock-soil body behind the pipe section and the shaft wall into the pipe network. However, after the completion of pipe jacking project, the construction shaft is often set as an inspection port or equipment access, and once the connection between the pipe section and the shaft wall is not tight, water leakage will easily cause damage to the equipment and key parts in the underground pipe network, which will cause great loss to the normal operation of the pipe network. SUMMARY

[0003] In view of the above problems of the prior art, the present application provides a connecting sealing device for the joint between top pipe port and shaft, which solves the problem of leakage at the connection between the end of pipe section and shaft structure.

[0004] In order to solve the above problems, the present application adopts the following technical scheme:

[0005] A connecting sealing device for the joint between top pipe port and shaft, comprising a shaft wall, a pipe section end and a steel plate ring fixed on the end face of the shaft wall and the pipe section; a water stop belt is arranged in the gap between the shaft wall and the pipe section end, and the outer end of the water stop belt is fixedly connected with the steel plate ring to realize the sealing of the pipe section end and the shaft wall; two ring bolt positioning holes are provided on the steel plate ring, which are an outer side bolt positioning hole and an inner side bolt positioning hole, the outer side bolt positioning hole is fixedly connected with the shaft wall by a bolt, and the inner side bolt positioning hole is fixedly connected with the pipe section end by a bolt, and the fixed position of the water stop belt and the steel plate ring is between the outer side bolt positioning hole and the inner side bolt positioning hole.

[0006] Further, the hole diameters of the outer side bolt positioning hole and the inner side bolt positioning hole are consistent.

[0007] Further, the diameter of the outer bolt positioning hole and the inner bolt positioning hole is 1-3 cm.

[0008] Further, the number of the outer bolt positioning hole and the inner bolt positioning hole on the steel ring is consistent and evenly distributed along the circumference of the steel ring.

[0009] Further, the number of the outer bolt positioning hole and the inner bolt positioning hole on the steel ring is 10-30.

[0010] Further, the steel ring is made of a steel plate with a thickness of 1 cm, the difference between the outer diameter and the inner diameter of the steel ring is 10-20 cm, and the radial spacing of the outer bolt positioning hole and the inner bolt positioning hole on the steel ring is 5-15 cm.

[0011] Further, the water stop is tightly fitted in the gap between the shaft wall and the pipe joint end.

[0012] The construction method of the connecting and sealing device of the pipe jacking port and the shaft combination part is as follows:

[0013] After the pipe jacking pipe joint jacking work is completed, the outer bolt positioning hole and the inner bolt positioning hole are set on the shaft wall and the pipe joint end according to the installation position of the steel ring, the water stop fixed on the steel ring is embedded in the gap between the shaft wall and the pipe joint end, the outer bolt positioning hole on the steel ring is fixed with the shaft wall by bolts, and then the inner bolt positioning hole on the steel ring is fixed with the pipe joint end by bolts, so as to fix the steel ring with the shaft wall and the pipe joint end respectively, and finally realize the sealing of the shaft wall and the pipe joint end; in the later period, the bolts on the outer bolt positioning hole and the inner bolt positioning hole can be disassembled to realize the quick disassembly of the sealing device in the operation and maintenance stage, and the water stop can also be regularly checked and replaced.

[0014] Compared with the prior art, the pipe jacking construction technology has the following beneficial effects:

[0015] The end sealing device of the application solves the leakage problem at the connection position of the pipe joint end and the shaft wall by using the water stop and the steel ring fixed by bolt connection with the shaft wall and the pipe joint end. The steel ring is fixed by bolt connection, which can quickly realize the sealing of the pipe joint end and the shaft wall, and the installation and disassembly operation is simple, and the regular sealing inspection and water stop replacement and maintenance can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to make the technical scheme of the present application clearer, the following will briefly introduce the drawings needed in the embodiment description, and the drawings are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the drawings without any creative effort.

[0017] Figure 1 is a schematic view of the cross-sectional structure of the connecting and sealing device of the combined part of the pipe port and the shaft well of the present application;

[0018] Figure 2 is a sectional view along the A-A direction after the cutting in Figure 1 ;

[0019] Figure 3 is a sectional view along the B-B direction after the cutting in Figure 1 ; DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will further describe the present application with the embodiments and drawings, and it should be understood that the specific embodiments described here are only used to disclose the present application, and are not used to limit the present application.

[0021] As shown in Figures 1-3 , the connecting and sealing device of the combined part of the pipe port and the shaft well of the embodiment of the present application includes the shaft well wall 1, the pipe joint end head 2 and the steel plate ring 3 fixed on the end faces of the shaft well wall 1 and the pipe joint end head 2. The gap between the shaft well wall 1 and the pipe joint end head 2 is also arranged with the water stop belt 6, which is tightly arranged in the gap between the shaft well wall 1 and the pipe joint end head 2. The outer end of the water stop belt 6 is fixedly connected with the steel plate ring 3, and is used to realize the sealing of the pipe joint end head 2 and the shaft well wall 1. The steel plate ring 3 is provided with two ring bolt positioning holes, which are the outer side bolt positioning hole 4 and the inner side bolt positioning hole 5. The outer side bolt positioning hole 4 is fixedly connected with the shaft well wall 1 through a bolt, and the inner side bolt positioning hole 5 is fixedly connected with the pipe joint end head 2 through a bolt. The fixed position of the water stop belt 6 and the steel plate ring 3 is between the outer side bolt positioning hole 4 and the inner side bolt positioning hole 5.

[0022] In the embodiment, the hole diameters of the outer side bolt positioning hole 4 and the inner side bolt positioning hole 5 are consistent, and the diameters are both 1 cm. The number of the outer side bolt positioning hole 4 and the inner side bolt positioning hole 5 on the steel plate ring 3 is both 20, which are uniformly distributed along the circumferential direction of the steel plate ring 3. In addition, the steel plate ring 3 used is made of a steel plate with a thickness of 1 cm, and the difference between the outer diameter and the inner diameter of the steel plate ring 3 is 15 cm. The radial spacing of the outer side bolt positioning hole 4 and the inner side bolt positioning hole 5 of the steel plate ring 3 is 10 cm.

[0023] The construction method of the connection sealing device of the top pipe port and the shaft joint part of the embodiment is as follows:

[0024] After the pipe jacking work of the pipe section is completed, the outer bolt positioning hole 4 and the inner bolt positioning hole 5 of the steel plate ring 3 are set according to the installation position of the steel plate ring 3, the water stop 6 fixed on the steel plate ring 3 is embedded into the gap between the shaft wall 1 and the pipe section end 2, the outer bolt positioning hole 4 of the steel plate ring 3 is fixed with the shaft wall 1 through bolts, and the inner bolt positioning hole 5 of the steel plate ring 3 is fixed with the pipe section end 2 through bolts, so as to fix the steel plate ring 3 with the shaft wall 1 and the pipe section end 2 respectively, and finally realize the sealing of the shaft wall 1 and the pipe section end 2. In the later period, the bolts of the outer bolt positioning hole 4 and the inner bolt positioning hole 5 can be removed to realize the quick disassembly of the sealing device in the operation and maintenance stage, and the water stop 6 can also be regularly checked and replaced.

[0025] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any change or replacement that can be easily thought of by those skilled in the art within the technical range disclosed by the present application should be covered within the protection scope of the present application.

Claims

1. A sealing device for the connection between the pipe jacking port and the shaft, characterized in that: The connection sealing device includes a vertical shaft wall (1), a pipe section end (2), and a steel plate ring (3) fixed on the end faces of both the vertical shaft wall (1) and the pipe section end (2). A waterstop (6) is also arranged in the gap between the vertical shaft wall (1) and the pipe section end (2). The outer end of the waterstop (6) is fixedly connected to the steel plate ring (3) to achieve the sealing between the pipe section end (2) and the vertical shaft wall (1). The steel plate ring (3) is provided with two ring bolt positioning holes, namely an outer bolt positioning hole (4) and an inner bolt positioning hole (5). The outer bolt positioning hole (4) is fixedly connected to the vertical shaft wall (1) by bolts, and the inner bolt positioning hole (5) is fixedly connected to the pipe section end (2) by bolts. The fixed position of the waterstop (6) and the steel plate ring (3) is located between the outer bolt positioning hole (4) and the inner bolt positioning hole (5). The diameters of the outer bolt positioning holes (4) and the inner bolt positioning holes (5) are the same; the diameters of the outer bolt positioning holes (4) and the inner bolt positioning holes (5) are both 1-3 cm; the number of the outer bolt positioning holes (4) and the inner bolt positioning holes (5) on the steel plate ring (3) is the same, and they are evenly distributed along the circumference of the steel plate ring (3); the number of the outer bolt positioning holes (4) and the inner bolt positioning holes (5) on the steel plate ring (3) is 10-30; the steel plate ring (3) is made of steel plate with a thickness of 1 cm, the difference between the outer diameter and the inner diameter of the steel plate ring (3) is 10-20 cm, and the radial spacing between the outer bolt positioning holes (4) and the inner bolt positioning holes (5) on the steel plate ring (3) is 5-15 cm; the waterstop (6) is tightly attached to the gap between the vertical shaft wall (1) and the pipe section end (2).

2. A construction method for a connection and sealing device at the junction of a pipe jacking port and a shaft according to claim 1, characterized in that: After the jacking of the pipe section is completed, the outer bolt positioning hole (4) and the inner bolt positioning hole (5) are set on the shaft wall (1) and the pipe section end (2) respectively according to the installation position of the steel plate ring (3). The waterstop (6) fixed on the steel plate ring (3) is embedded into the gap between the shaft wall (1) and the pipe section end (2). At the same time, the outer bolt positioning hole (4) on the steel plate ring (3) is fixed to the shaft wall (1) by bolts. Then, the inner bolt positioning hole (5) on the steel plate ring (3) is fixed to the pipe section end (2) by bolts. Thus, the steel plate ring (3) is fixed to the shaft wall (1) and the pipe section end (2) respectively, and finally the shaft wall (1) and the pipe section end (2) are sealed. Later, the sealing device can be quickly disassembled during the operation and maintenance stage by disassembling the bolts on the outer bolt positioning hole (4) and the inner bolt positioning hole (5). At the same time, the waterstop (6) can also be inspected and replaced regularly.

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