Drainage structure between pipe sections of jacking pipe

Abstract

The utility model discloses a drainage structure between pipe sections of a jacking pipe, which comprises two adjacent pipe sections which are coaxially spliced and a water receiving box which is used for receiving and guiding seepage water of a joint between the two adjacent pipe sections, the inner walls of the two adjacent pipe sections, which are close to the joint, are provided with step grooves which are mutually symmetrical, the water receiving box is provided with a U-shaped box body, and the U-shaped box body is provided with a water inlet and a water outlet. The two sides of the box body are each provided with a side wing, the side wings are arranged in the step grooves, the box body right faces the joint, the bottom wall of the box body is flush with the inner side wall face of the pipe joint, and the inner side wall of the box body is provided with a plurality of water level sensors of different heights. The underground control device can be combined with existing measures, is simple in structure and convenient to maintain, and better solves the problem of underground control of joints between pipe joints.

Description

Technical Field

[0001] The utility model relates to the technical field of jacking pipe construction, in particular to a jacking pipe inter-section drainage structure. Background Art

[0002] Pipe jacking technology is a widely used trenchless technology, which is mainly used in pipeline laying, integrated pipeline corridors, rail transit and other fields. It has the advantages of high construction precision, suitability for various strata, little impact on surrounding existing pipelines or underground and surface buildings during the construction process, and no restrictions on groundwater.

[0003] The pipe jacking method is to overcome the friction between the pipe and the surrounding soil by using the jacking force generated by the jacking equipment in the working pit, push the pipe into the soil section by section (root by root) according to the designed slope, and transport the soil away. Based on the process characteristics of the pipe jacking method, the joints between the pipe sections are prone to seepage and leakage after the tunnel is formed. The existing process basically uses waterproof materials such as water stop strips and sealants for sealing and waterproofing, but the waterproof effect is easily affected by factors such as uneven settlement between pipe sections, the quality of the process construction itself, or excessive external water pressure. Seepage and leakage will still occur. If not handled, it will directly affect the normal use function of the tunnel. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and to provide a top pipe inter-section drainage structure which can be combined with existing measures, has a simple structure, is easy to repair and maintain, and can better solve the underground control problem at the joints between pipe sections.

[0005] The utility model is realized through the following technical scheme: a drainage structure between top pipe sections, comprising two adjacent coaxially spliced ​​pipe sections, a water receiving box for receiving seepage water from the joints between the two adjacent pipe sections, inner walls of the two adjacent pipe sections near the joints are provided with mutually symmetrical step grooves, the water receiving box has a U-shaped box body, side wings are provided on both sides of the box body, the side wings are provided in the step grooves, the box body is opposite to the joint, the bottom wall of the box body is flush with the inner wall surface of the pipe section, and the inner wall of the box body is provided with a plurality of water level sensors of different heights.

[0006] Furthermore: the side wing is provided with a plurality of fixing holes spaced apart along its length direction, a sleeve is pre-embedded on the step groove, the side wing is fixed in the step groove by bolts passing through the fixing holes and the sleeve in sequence, and a water stop strip is provided between the side wing and the step groove.

[0007] Furthermore: the side wing is fixed to the step groove by an adhesive.

[0008] Furthermore: the width of the side wings is not less than 10 cm.

[0009] Furthermore, the spacing between the fixing holes is 10cm-20cm, and the spacing between the sleeves is matched with the spacing between the fixing holes.

[0010] Furthermore: when the pipe section is circular, the water receiving box is distributed in an arc shape and arranged along the upper part of the inner wall of the pipe section, a hidden ditch is set at the lowest point of the inner wall of the pipe section, and an arc-shaped water diversion ditch is set at the lower part of the inner wall of the pipe section. The water diversion ditch is connected to the hidden ditch, and the end of the water receiving box extends into the end of the water diversion ditch, and the water receiving box and the water diversion ditch form a circular shape.

[0011] Furthermore: when the pipe section is rectangular, open grooves are respectively arranged on both sides of the inner bottom wall of the pipe section, the water receiving box is distributed in an open mouth shape, and the water receiving box is arranged along the top wall and side wall of the pipe section, and the two end points of the water receiving box extend into the corresponding open grooves.

[0012] Furthermore: the length of the end of the water receiving box extending into the water diversion ditch is not less than 10 cm.

[0013] Furthermore, the water receiving box is formed by full-section or segmented pressing of steel plates.

[0014] Furthermore: the side wings are provided with an anti-corrosion layer.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. Compared with traditional waterproofing and leak-proofing measures, the utility model adopts a water receiving box to receive the possible seepage and leakage at the joints of the pipe sections in the jacking tunnel. The water leaking at the joints flows into the water receiving box, and finally flows into the diversion ditch through the water receiving box, and is collected into the dark ditch through the diversion ditch, or flows into the open ditch through the water receiving box for unified treatment. It can be combined with existing waterproofing measures to better solve the problem of underground control at the joints between the pipe sections of the jacking tunnel.

[0017] 2. The side wings of the water collection box are fixed to the step groove with bolts or adhesives, which is convenient for disassembly and subsequent inspection, maintenance and replacement.

[0018] 3. Multiple water level sensors of different heights are installed on the inner wall of the water receiving box to monitor the groundwater control situation at the joints between the pipe segments in real time. When the internal water level suddenly rises or is too high, timely maintenance can be carried out to avoid its impact on the existing operating equipment in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 for Figure 1 A partial enlarged view of

[0021] Figure 3 It is a structural schematic diagram of the water receiving box of the utility model;

[0022] Figure 4 The structure of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 5 The structure of the utility model is shown in FIG. Figure 3 ;

[0024] Figure 6 The structure of the utility model is shown in FIG. Figure 4 ;

[0025] Figure 7 for Figure 6 A partial enlarged view of .

[0026] Explanation of the accompanying drawings: 1-pipe joint, 2-joint, 3-water collecting box, 4-step groove, 5-box body, 6-side wing, 7-water level sensor, 8-fixing hole, 9-sleeve, 10-bolt, 11-water stop strip, 12-hidden ditch, 13-water diversion ditch, 14-open ditch, 15-reinforcement steel ring, 16-wall steel ring, 17-wooden pad, 18-socket steel ring, 19-eagle-beak water stop ring. DETAILED DESCRIPTION

[0027] Figures 1 to 7 A schematic structural diagram of an embodiment of a top pipe inter-segment drainage structure provided by the utility model comprises two adjacent coaxially spliced ​​pipe segments 1, a water receiving box 3 for receiving seepage water from a joint 2 between the two adjacent pipe segments 1, inner walls of the two adjacent pipe segments 1 near the joint 2 are provided with mutually symmetrical step grooves 4, the water receiving box 3 has a U-shaped box body 5, side wings 6 are provided on both sides of the box body 5, the side wings 6 are provided in the step grooves 4, the box body 5 is directly opposite to the joint 2, the bottom wall of the box body 5 is flush with the inner wall surface of the pipe segment 1, and the inner wall of the box body 5 is provided with a plurality of water level sensors 7 of different heights.

[0028] The side wing 6 is provided with a plurality of fixing holes 8 spaced apart along its length direction, a sleeve 9 is pre-buried on the step groove 4, the side wing 6 is fixed in the step groove 4 by bolts 10 passing through the fixing holes 8 and the sleeve 9 in sequence, and a water stop strip 11 is provided between the side wing 6 and the step groove 4.

[0029] The width of the side wings 6 is no less than 10 cm.

[0030] The spacing between the fixing holes 8 is 10 cm-20 cm, and the spacing between the sleeves 9 is matched with the spacing between the fixing holes 8 .

[0031] In this embodiment, the side wing 6 may also be fixed to the step groove 4 by an adhesive.

[0032] The adhesive may be a detachable silicone sealant, a detachable epoxy resin, a detachable polyurethane or the like. Adhesive fixing may eliminate the steps of installing the water stop strip 11, drilling the fixing hole 8, embedding the sleeve 9 or the like.

[0033] Reference Figure 4 When the pipe segment 1 is circular, the water receiving box 3 is distributed in an arc shape and arranged along the upper part of the inner wall of the pipe segment 1. A dark ditch 12 is set at the lowest point of the inner wall of the pipe segment 1. An arc-shaped water diversion ditch 13 is set at the lower part of the inner wall of the pipe segment 1. The water diversion ditch 13 is connected to the dark ditch 12. The end of the water receiving box 3 extends into the end of the water diversion ditch 13, and the water receiving box 3 and the water diversion ditch 13 form a circular shape.

[0034] The length of the end of the water receiving box 3 extending into the water diversion ditch 13 is not less than 10 cm.

[0035] Specifically, Figure 4 The dotted line in the figure indicates the backfill control line. A water diversion ditch 13 is arranged on the inner wall of the pipe segment 1 below the backfill control line, and a water receiving box 3 is arranged on the inner wall of the pipe segment 1 above the backfill control line. The water diversion ditch 13 is made of concrete, and the inner diameter of the water diversion ditch 13 is slightly larger than the outer diameter of the water receiving box 3.

[0036] Reference Figure 5 When the pipe segment 1 is rectangular, open grooves 14 are respectively arranged on both sides of the inner bottom wall of the pipe segment 1, and the water receiving box 3 is distributed in an open mouth shape, and the water receiving box 3 is arranged along the top wall and side wall of the pipe segment 1, and the two end points of the water receiving box 3 extend into the corresponding open grooves 14.

[0037] The water receiving box 3 is formed by full-section or segmented pressing of steel plates.

[0038] The flanks 6 are provided with an anti-corrosion layer.

[0039] Providing an anti-corrosion layer can improve the anti-corrosion performance of the water receiving box 3 and extend its service life.

[0040] During installation, after the waterproof structure construction of the tunnel pipe segment 1 is completed and the settlement of the pipe segment 1 is basically stable, the water receiving box 3 is installed to guide the seepage water at the joint 2 between two adjacent pipe segments 1 to the box body 5 of the water receiving box 3, and then enter the water diversion ditch 13 through the end of the water receiving box 3, and finally collect and treat it through the dark ditch 12, or enter the open ditch 14 through the end of the water receiving box 3 for collection and treatment, so as to discharge the water in the water receiving box 3 through the water diversion ditch 13 and the dark ditch 12 or the open ditch 14, which can be combined with the existing waterproofing measures to better solve the underground control problem at the joint 2 between the pipe segments 1 of the top pipe tunnel; in addition, the water level sensor 7 in the box body 5 can monitor the groundwater control situation at the joint 2 in real time, and when the internal water level suddenly rises or is too high, timely maintenance can be carried out to avoid its impact on the existing operating equipment in the tunnel.

[0041] Reference Figure 6 and Figure 7 If the external water pressure of the pipe segment 1 is high due to the tunnel passing through a river or the groundwater level is high, it is necessary to weld a reinforcing steel ring 15 at the joint 2 of the pipe segment 1 before installing the water receiving box 3.

[0042] Specifically, the two sides of the reinforcing steel ring 15 are fixed to the wall steel ring 16 embedded in the inner wall of the pipe segment 1, a wooden pad 17 is provided on the end face of the joint 2 of two adjacent pipe segments 1, a socket steel ring 18 is provided on the outer wall of the joint 2 end of two adjacent pipe segments 1, and an eagle-beak-shaped waterstop ring 19 is provided between the socket steel ring 18 and one of the pipe segments 1, and the socket steel ring 18 and the eagle-beak-shaped waterstop ring 19 form an outer waterproof structure.

[0043] The above detailed description is a specific description of a feasible embodiment of the utility model. The embodiment is not intended to limit the patent scope of the utility model. Any equivalent implementation or modification that does not deviate from the utility model should be included in the patent scope of this case.

Claims

1. A pipe-jacking inter-section drainage structure, characterized in that: It comprises two adjacent coaxially spliced ​​pipe sections, and a water receiving box for receiving seepage water from the joint between the two adjacent pipe sections, wherein the inner walls of the two adjacent pipe sections near the joint are provided with mutually symmetrical step grooves, and the water receiving box has a U-shaped box body, and side wings are provided on both sides of the box body, and the side wings are arranged in the step grooves, the box body is opposite to the joint, and the bottom wall of the box body is flush with the inner wall surface of the pipe section, and the inner wall of the box body is provided with a plurality of water level sensors of different heights.

2. According to claim 1, a pipe-top inter-section drainage structure is characterized by: The side wing is provided with a plurality of fixing holes spaced apart along its length direction, a sleeve is pre-embedded on the step groove, the side wing is fixed in the step groove by bolts passing through the fixing holes and the sleeve in sequence, and a water stop strip is provided between the side wing and the step groove.

3. According to claim 1, a pipe-top inter-section drainage structure is characterized by: The side wings are fixed to the step groove by adhesive.

4. According to claim 2, a pipe-top inter-section drainage structure is characterized by: The width of the side wings is no less than 10 cm.

5. According to claim 2, a pipe-top inter-section drainage structure is characterized by: The spacing between the fixing holes is 10cm-20cm, and the spacing between the sleeves is matched with the spacing between the fixing holes.

6. The drainage structure between pipe jacking sections according to claim 2, characterized in that: When the pipe section is circular, the water receiving box is distributed in an arc shape and arranged along the upper part of the inner wall of the pipe section. A hidden ditch is set at the lowest point of the inner wall of the pipe section. An arc-shaped water diversion ditch is set at the lower part of the inner wall of the pipe section. The water diversion ditch is connected to the hidden ditch. The end of the water receiving box extends into the end of the water diversion ditch, and the water receiving box and the water diversion ditch form a circular shape.

7. The drainage structure between pipe jacking sections according to claim 2, characterized in that: When the pipe section is rectangular, open grooves are respectively arranged on both sides of the inner bottom wall of the pipe section, the water receiving box is distributed in an open mouth shape, and the water receiving box is arranged along the top wall and side wall of the pipe section, and the two end points of the water receiving box extend into the corresponding open grooves.

8. The drainage structure between pipe jacking sections according to claim 6, characterized in that: The length of the end of the water receiving box extending into the water diversion ditch is not less than 10 cm.

9. A pipe-top inter-section drainage structure according to any one of claims 6 or 7, characterized in that: The water receiving box is formed by pressing the steel plate in whole sections or in sections.

10. A pipe-jacking inter-section drainage structure according to claim 9, characterized in that: The side wings are provided with an anti-corrosion layer.

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