Spliced inspection well leakproofness self-checking structure and compaction grouting joint structure

Abstract

The utility model discloses an assembled inspection well leakproofness self-checking structure, which is characterized in that the inspection well structure on two sides of a joint is respectively called as a part A and a part B, the part B is lower than the part A, two annular sealing rings are arranged on the splicing surface of the part A and the part B at intervals, and an active sealing part is defined by the two annular sealing rings, the part A and the part B; a press-in hole is formed in the part B on one side of the active sealing part, and a pressure relief hole is formed in the part A on the other side of the active sealing part; a convex connecting part is correspondingly arranged between the part A and the part B, and a split bolt is connected between the convex connecting part of the part A and the convex connecting part of the part B; and more than three groups of pressing devices are uniformly arranged in the circumferential directions of the part A and the part B. Through the arrangement of the active sealing part, the press-in hole and the pressure relief hole, water injection and pressing are facilitated in the active sealing part, and the water pressure resistance of the two annular sealing rings is tested. When the water pressure resistance is insufficient, a split bolt of the pressing device can be adjusted, the sealing pressure resistance is improved, and a foundation is provided for grouting sealing.

Description

Technical Field

[0001] This utility model relates to the field of waterproof treatment of underground structure joints, and in particular to a waterproof effect inspection and compaction grouting reinforcement measure for underground precast structure joints. Background Technology

[0002] With the continuous rise in labor costs, more and more municipal engineering projects are adopting prefabricated assembly structures to reduce on-site construction work. Among these, prefabricated manholes are the most widely used.

[0003] Manholes come in various structural forms, including circular, rectangular, and irregular shapes. However, water seepage or leakage at the joints of manholes and their components not only affects their normal use, leading to corrosion of the manhole body and uneven foundation settlement, but can also cause tensile or compressive cracks between the manhole and pipe fittings, shortening their service life. In severe cases, it can lead to groundwater deterioration, soil pollution, and even threaten the structural safety of nearby important buildings.

[0004] Currently, waterproofing treatment for joints in assembled structures is all done passively. The waterproofing performance at the joints cannot guarantee their sealing before problems occur, resulting in a large amount of maintenance work later on.

[0005] The design concept of this utility model is to change passive waterproofing to active waterproofing. After splicing and before backfilling and concealment, a sealing test is carried out, followed by compaction grouting and secondary curing into an integrated structure, thereby greatly reducing the amount of maintenance work in the later stage. Utility Model Content

[0006] The purpose of this utility model is to provide a self-inspection structure for the tightness of assembled inspection wells, which provides a sealing pressure resistance test function at the joints of assembled inspection wells.

[0007] To achieve the above objectives, this utility model provides a self-inspection structure for the tightness of an assembled inspection well. The assembled inspection well has a joint, and the inspection well structures on both sides of the joint are referred to as part A and part B, respectively. Part B is lower than part A. Two annular sealing rings are provided at intervals at the splicing surface of part A and part B. The two annular sealing rings, part A and part B form an active sealing part. A pressing hole is provided in part B on one side of the active sealing part. The inner end of the pressing hole communicates with the active sealing part, and the other end of the pressing hole is located on the outer surface of part B.

[0008] A pressure relief hole is provided in part A on the other side of the active sealing part. The inner end of the pressure relief hole is connected to the active sealing part, and the other end of the pressure relief hole is located on the outer surface of part A.

[0009] Corresponding protruding connecting parts are arranged between the A part and the B part, and a tension bolt is connected between the protruding connecting parts of the A part and the B part; the tension bolt and the corresponding protruding connecting parts of the A part and the B part form a set of compression devices, and three or more sets of compression devices are uniformly arranged along the circumferences of the A part and the B part.

[0010] The utility model discloses still a kind of compaction grouting joint structure, and the grouting sealing structure is arranged in active sealing part using the above-mentioned assembled inspection well tightness self-checking structure.

[0011] The utility model has the following advantages:

[0012] The setting of active sealing part, press-in hole and pressure relief hole facilitates water injection and pressure test in the active sealing part, and the water pressure resistance of the two annular sealing rings can be tested.When the water pressure resistance is insufficient, the tension bolt of the compression device can be adjusted to increase the compression force between the A part and the B part, further compress the two annular sealing rings, and further improve the sealing pressure resistance of the active sealing part, and provide a basis for grouting sealing.

[0013] The grouting sealing structure is formed after the grouting liquid (such as cement mortar) solidifies, which can greatly improve the pressure resistance and waterproof performance of the joint.The matched active sealing method is simple and efficient, and the formed compaction grouting joint structure basically eliminates the possibility of leakage at the joint of the inspection well.The secondary solidification makes the A part and the B part form an integrated structure, which greatly reduces the maintenance workload in the later period.

[0014] Thought explanation: The compaction grouting joint structure is formed after the grouting liquid is injected and solidified using the assembled inspection well tightness self-checking structure, and the protection object is the result structure of the project.

[0015] The assembled inspection well tightness self-checking structure is a process structure of the tightness project, which is different from the result structure, so it is protected by different claims. DRAWINGS

[0016] Figure 1 is a plan view of the utility model.

[0017] Figure 2 is a front view of the utility model. DETAILED DESCRIPTION

[0018] As shown in Figure 1 and Figure 2 , the utility model provides a kind of assembled inspection well tightness self-checking structure, and the assembled inspection well has joint, and the inspection well structure on the two sides of joint is respectively called A part 1 and B part 2, and B part 2 is lower than A part 1.

[0019] Two annular sealing rings 3 (preferably rubber sealing rings) are arranged at the splicing surface of the A part 1 and the B part 2, and a driving sealing part 4 is formed between the two annular sealing rings 3, the A part 1 and the B part 2. Figure 2 The B part 2 on one side of the driving sealing part 4 is provided with a press-in hole 5 (the press-in hole 5 is hidden by the B part 2 and is indicated by a dashed line in the figure)

[0020] The A part 1 on the other side of the driving sealing part 4 is provided with a pressure relief hole 6, and the other end of the pressure relief hole 6 is located on the outer surface of the A part 1.

[0021] Corresponding convex connecting parts 7 are arranged between the A part 1 and the B part 2, and a pair of pull bolts 8 are connected between the convex connecting parts 7 of the A part 1 and the B part 2; the pair of pull bolts 8 and the corresponding convex connecting parts 7 of the A part 1 and the B part 2 form a set of pressing devices, and more than three sets of pressing devices are uniformly arranged along the circumferences of the A part 1 and the B part 2.

[0022] The driving sealing part 4, the press-in hole 5 and the pressure relief hole 6 are arranged to facilitate water injection and pressure test in the driving sealing part 4, and the water pressure resistance of the two annular sealing rings 3 can be tested. When the water pressure resistance is insufficient, the pair of pull bolts 8 of the pressing device can be adjusted to increase the pressing force between the A part 1 and the B part 2, further press the two annular sealing rings 3, and further improve the sealing pressure resistance of the driving sealing part 4, and provide a basis for grouting sealing.

[0023] The utility model also provides a compact grouting joint structure which adopts the above-mentioned assembled inspection well tightness self-checking structure and is provided with a grouting sealing structure in the driving sealing part 4. Figure 1 And Figure 2 The grouting sealing structure is formed after the grout solidifies after being injected.

[0024] The compact grouting joint structure is formed after the grout solidifies after being injected using the assembled inspection well tightness self-checking structure, and the protection object is the result structure of the project.

[0025] The assembled inspection well tightness self-checking structure is the process structure of the tightness project, and the process structure is different from the result structure, so they are protected by different claims.

[0026] The utility model also provides active sealing method, adopt above described assembling inspection well tightness self -checking structure, carry out according to following steps: first step is preparation step, and two recesses are reserved respectively in the splicing surface of A part 1 and B part 2, and the annular sealing ring 3 is inserted in two recesses correspondingly, and the active sealing part 4 is formed; A part 1 is higher than B part 2, and the pressure relief hole 6 is made on A part 1, and the pressure hole 5 is made on B part 2;

[0027] Second step is compacting, and the counter pull bolt 8 of each compacting device is tightened, and A part 1 and B part 2 are relatively compacted;

[0028] Third step is pressure test, and the water of predetermined pressure is injected to the active sealing part 4 through the pressure hole 5, when the water is discharged in the pressure relief hole 6, the pressure gauge is installed at the pressure relief hole 6 and the pressure relief hole 6 is blocked, when the value of pressure gauge reaches predetermined pressure, stop injecting water, block the pressure hole 5, after the predetermined time of pressure maintaining, the pressure change of pressure gauge is monitored, when the pressure drop meets the design requirement of inspection well, it is considered that pressure test is qualified, and fourth step is carried out, when the pressure drop does not meet the design requirement of inspection well, it is considered that pressure test is unqualified, and second step is returned to execute until pressure test is qualified;

[0029] Fourth step is drainage, and the pressure relief hole 6 and the pressure hole 5 are opened, and the pressure gauge is retained, and the water for pressure test is discharged from the pressure hole 5;

[0030] Fifth step is grouting, and the slurry (such as cement mortar) of predetermined pressure is injected to the active sealing part 4 through the pressure hole 5, the pressure relief hole 6 is blocked after the slurry is discharged at the pressure relief hole 6, the data of pressure gauge is observed, after the pressure reaches the predetermined grouting pressure, the pressure gauge is removed and the pressure relief hole 6 is blocked again, grouting is stopped and the pressure hole 5 is blocked, and the above-mentioned pressure grouting joint structure is formed after the slurry solidifies.

[0031] The above embodiments are only used to illustrate but not to limit the technical scheme of the utility model, although the utility model is described in detail with reference to the above-mentioned embodiments, those skilled in the art should understand that: still can modify or equivalent replace to the utility model, without any modification or partial replacement of the spirit and scope of the utility model, it should be covered in the claim range of the utility model.

Claims

1. An assembled manhole tightness self-checking structure, the assembled manhole having a joint, the manhole structure on both sides of the joint being respectively referred to as an A part and a B part, the B part being lower than the A part, characterized in that: Two annular sealing rings are arranged at intervals at the splicing surface between the A part and the B part, the two annular sealing rings, the A part and the B part form an active sealing part, a press-in hole is arranged in the B part on one side of the active sealing part, the inner end of the press-in hole is communicated with the active sealing part, and the other end of the press-in hole is located on the outer surface of the B part; ​ A relief hole is arranged in the A part on the other side of the active sealing part, the inner end of the relief hole is communicated with the active sealing part, and the other end of the relief hole is located on the outer surface of the A part; Corresponding convex connecting parts are arranged between the A part and the B part, and a pair of pull bolts are connected between the convex connecting parts of the A part and the B part; the pair of pull bolts and the corresponding convex connecting parts of the A part and the B part form a set of pressing devices, and three or more sets of pressing devices are uniformly arranged along the circumferences of the A part and the B part.

2. The structure of the tightness self-checking of the joint of the pressure grouting, using the structure of the tightness self-checking of the joint of the pressure grouting of claim 1, characterized in that: A grouting sealing structure is arranged in the active sealing part.

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