An advanced pre-buried device for treating water leakage in underground structures

Abstract

The present invention discloses an advance pre-buried device for treating underground structure leakage water in the technical field of underground structure leakage treatment, comprising a pre-buried pipe, a plurality of groups of grouting holes are arranged on the wall of the pre-buried pipe, a protective sheet is attached to the inner side of the grouting hole, a bottom plug and an injection plug are arranged in the pre-buried pipe, a pull rod is fixedly connected to the top of the bottom plug, a casing is fixedly connected to the top of the injection plug, the injection plug is located at the top of the bottom plug and the pull rod is located in the casing and the two are slidably matched, and a sealing plug is arranged on the top of the pre-buried pipe; the present invention can realize precise sealing with better effect, and a reusable channel can be maintained inside, thereby facilitating the sealing of other positions and avoiding the problem that leakage points appear at different times and cannot be effectively sealed.

Description

Technical Field

[0001] The invention relates to the technical field of underground structure water leakage treatment, in particular to an advance pre-buried device for underground structure water leakage treatment. Background Art

[0002] Background Information

[0003] With the continuous development of the construction industry and the acceleration of urbanization, there are more and more underground projects, and the underground deep foundation pit projects are getting deeper and deeper. Before carrying out underground projects, it is necessary to establish a maintenance system to avoid collapse, leakage and other problems during formal construction, protect the safety of surrounding buildings, and ensure the safety of construction and the safety of the main body of the construction. At present, most underground retaining structures are underground continuous walls or pile foundation retaining structures. Underground continuous walls and cast-in-place piles are cast in concrete, so cracks are inevitable. The retaining system of steel sheet piles, the connection between the pile body and the plate body is a weak point. Due to the unstable engineering geology and hydrogeology of underground projects, underground projects are complex and changeable, and leakage must be taken seriously.

[0004] Disadvantages of existing technology

[0005] Currently, there are two ways to solve the leakage of underground enclosures: one is to seal it by grouting with embedded parts, and the other is to repair and seal it from the surface after the leakage is discovered. Sealing with embedded parts is a better method, which can be repaired after the main construction is completed. There is no need to excavate the leak point, thus reducing the workload of repair. Surface sealing is more troublesome, and it requires excavation after the main construction is completed, or it needs to be demolished to repair and plug the leak.

[0006] Chinese patent application number CN202210528666.9 discloses a method for treating water leakage in underground continuous walls. Cotton wool is used to plug the water leakage in the underground continuous wall, a PPR drainage pipe with a valve is rubbed into the water leakage, quick-drying cement is used to seal the water leakage and a soft drainage pipe is pre-buried. After the quick-drying cement solidifies, a hole is drilled and a water-stop needle is inserted. A handheld high-pressure grouting machine is used to inject water-soluble polyurethane through the soft drainage pipe and the water-stop needle. This is a repair method from the outer surface to the inside after leakage, which requires the destruction of the existing main structure for leak repair; Chinese patent application number CN202120591563.8 Disclosed is an advanced pre-buried device for treating water seepage in underground structures. By pre-buried small grouting conduits, the small grouting conduits are directly pre-buried between pile bodies after the construction of spray anchors between piles is completed. After the construction of the main concrete structure is completed, external grouting can be directly performed to plug the leak at the leaking point. The small conduit is provided with limited grouting holes, and after a plugging position is plugged, the grouting liquid will also remain in the grouting pipe at the same time, thereby plugging the grouting pipe, and the leaking point below the plugged grouting pipe cannot be plugged again. The grouting coverage area needs to be large enough to ensure that the leaking point is reached and the plugging effect is achieved. If the leaking point is at the edge of the grouting coverage, the plugging effect is not good.

[0007] Based on this, the present invention designs an advance pre-embedded device for treating water leakage in underground structures to solve the above problems. Summary of the invention

[0008] The object of the present invention is to provide an advance pre-buried device for treating seepage water in underground structures, so as to solve the problem proposed in the above-mentioned background technology that the conduit is provided with limited grouting holes, and after a blocking position is blocked, the grouting liquid will also remain in the grouting pipe at the same time, thereby blocking the grouting pipe, and the leakage point below the blocked grouting pipe cannot be blocked again, and the grouting coverage area needs to be large enough to ensure that the leakage point is reached and the blocking effect is achieved. If the leakage point is at the edge position of the grouting coverage, the blocking effect is not good.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solution: comprising a pre-buried pipe, wherein a plurality of grouting holes are opened on the wall of the pre-buried pipe, a protective sheet is attached to the inner side of the grouting hole, a bottom plug and an injection plug are arranged in the pre-buried pipe, a pull rod is fixedly connected to the top of the bottom plug, a sleeve is fixedly connected to the top of the injection plug, the injection plug is located at the top of the bottom plug and the pull rod is located in the sleeve and the two are slidably matched, and a sealing plug is provided at the top of the pre-buried pipe.

[0010] As a further solution of the present invention, the outer wall of the embedded pipe is fixedly connected to a plurality of limiting frames, and the limiting frames are located at the periphery of the grouting hole and the two correspond one to one.

[0011] As a further solution of the present invention, the embedded tubes are provided in plurality and the edges of the limiting frames of each embedded tube are fixedly connected, the hollowed-out parts between the limiting frames are fixedly connected with compensating side plates, and the middle of the compensating side plates is provided with a bidirectional hole.

[0012] As a further solution of the present invention, a back patch is fixedly connected to the front side of the limiting frame, and a connecting window is opened on the front side of the limiting frame, and the connecting window allows the inside of the limiting frame to communicate with the compensation side panel.

[0013] As a further solution of the present invention, the limiting frame is provided with a partition plate on one side of the compensating sealing plate, a partition hole is opened in the middle of the partition plate, the embedded pipe is connected to the partition hole through a side branch pipe, and a grouting insert is fixedly connected to the bidirectional hole of the compensating side plate.

[0014] As a further solution of the present invention, the grouting insert is outer-mounted with a closing tube, the outer wall of the closing tube is fixedly connected with a compensation frame through a support rod, a plurality of compensation frames are provided and correspond one-to-one with the compensation side plates, and the separator is recessed in the limiting frame.

[0015] As a further solution of the present invention, the spaces defined by the compensation frame and the limiting frame overlap, and a one-way sheet is provided in the middle of the separation hole of the separation sheet.

[0016] As a further solution of the present invention, the protective sheet is a plastic sheet and has a cross cut in the middle.

[0017] As a further solution of the present invention, the back patch is a plastic sheet, a non-woven fabric sheet, a thermal adhesive sheet, or a waterproof coiled material.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The wall of the embedded pipe is equipped with multiple groups of grouting holes, which can be used to inject grout at multiple points through one pipe, so that the leakage point can be blocked in a targeted manner.

[0020] When grouting to plug the leak, first lift the bottom plug to the bottom of the grouting hole at the leak location, pull out the injection plug first and then inject grout into the embedded pipe, continue to press the injection plug downward, squeeze the sealing slurry between the bottom plug and the injection plug out from the grouting hole, and then plug the leak at a fixed point. After plugging, pull the bottom plug upward. During this process, the remaining sealing slurry and the injection plug are lifted up, so that the embedded pipe can maintain a reusable channel inside after grouting plugging, thereby facilitating the plugging of other locations and avoiding the problem of leaks occurring at different times and not being able to be effectively plugged.

[0021] At the same time, if there are multiple leakage points at the same location of the same embedded pipe, the position of the bottom plug can be raised and multi-point blocking can be achieved through grouting holes in different positions, so that the embedded pipe can be used repeatedly and the coverage area can be increased, and precise blocking can be achieved with better results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the embedded pipe in Example 1 of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the embedded pipe in Example 2 of the present invention;

[0024] Figure 3 This is a schematic diagram of the combined use of pre-buried pipes in Example 2 of the present invention;

[0025] Figure 4 This is a schematic diagram of the overall structure of Example 3 of the present invention;

[0026] Figure 5 This is a side view schematic diagram of the overall structure in Example 3 of the present invention;

[0027] Figure 6 It is a schematic diagram of a stepped cross-section from the rear side perspective of the overall structure in Example 3 of the present invention;

[0028] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of the middle part A;

[0029] Figure 8 It is a schematic diagram of a stepped cross-section from a top view of the overall structure in Example 3 of the present invention;

[0030] Fig. 9 For the present invention Figure 8 The enlarged structural diagram of the middle B part;

[0031] Fig.10 This is a schematic diagram of using the compensation frame of the present invention;

[0032] Fig.11 This is a schematic diagram of the actual use of Example 3 of the present invention (the left side is the underground structure and the right side is the construction side wall).

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Embedded pipe; 2. Grouting hole; 3. Protective sheet; 4. Bottom plug; 5. Injection plug; 6. Pull rod; 7. Casing; 8. Sealing plug; 9. Limiting frame; 10. Compensating side plate; 11. Two-way hole; 12. Back patch; 13. Connecting window; 14. Separator; 15. Separation hole; 16. Grouting insert; 17. Closing tube; 18. Compensating frame. DETAILED DESCRIPTION

[0035] See also Figure 1-11 The working principle of the technical solution provided by the present invention is as follows: Example

[0036] See also Figure 1 , 7 , including a pre-buried pipe 1, a plurality of grouting holes 2 are opened on the wall of the pre-buried pipe 1, a protective sheet 3 is attached to the inner side of the grouting hole 2, a bottom plug 4 and an injection plug 5 are arranged in the pre-buried pipe 1, a pull rod 6 is fixedly connected to the top of the bottom plug 4, a sleeve 7 is fixedly connected to the top of the injection plug 5, the injection plug 5 is located at the top of the bottom plug 4 and the pull rod 6 is located in the sleeve 7 and the two are slidably matched, and a sealing plug 8 is provided at the top of the pre-buried pipe 1.

[0037] The side of the underground retaining structure can be arranged first, and then the embedded pipe 1 can be installed on the side of the underground retaining structure, and then the main side wall can be constructed, and the lower end of each embedded pipe 1 can be vertically extended to a position below the bottom plate cushion layer of the foundation pit bottom plate, and the top of the embedded pipe 1 can be placed above the foundation pit crown beam to complete the embedding; during the pre-embedding, due to the provision of a protective sheet 3, the embedded pipe 1 can be prevented from being blocked during the early installation and the later main side wall construction. At the same time, the wall of the embedded pipe 1 is provided with multiple groups of grouting holes 2, which can be poured at multiple points through a pipe, so that the leakage point can be targetedly blocked; in order to keep the embedded pipe 1 available, when grouting the leaking point, first lift the bottom plug 4 to the bottom of the grouting hole 2 at the leaking point, pull out the injection plug 5 first, and then inject grout into the embedded pipe 1, and the plugging slurry is located at the bottom plug 4, at this time, the injection plug 5 is inserted and the injection plug 5 is continuously pressed down, so that the plugging slurry between the bottom plug 4 and the injection plug 5 is squeezed out from the grouting hole 2, and then the leaking point is plugged at a fixed point. After the plugging is completed, the bottom plug 4 is pulled out upwards. In this process, the remaining plugging slurry and the injection plug 5 are all lifted, so that after the grouting plugging of the pre-buried pipe 1, the internal channel can be kept for reuse, so as to facilitate the plugging of other positions and avoid the problem that the leaking points appear at different times and cannot be effectively plugged; at the same time, if there are multiple leaking points at the same pre-buried pipe 1, the position of the bottom plug 4 can be lifted, and the grouting holes 2 at different positions can be used to achieve multi-point simultaneous plugging, so that the pre-buried pipe 1 can be used repeatedly and the coverage area can be improved, so that accurate plugging can be achieved with better effect. Example

[0038] See also Figure 2-3 Among them, the outer wall of the embedded pipe 1 is fixedly connected to multiple limiting frames 9, and the limiting frames 9 are located outside the grouting holes 2 and the two correspond one to one.

[0039] During grouting and plugging, the plugging slurry flowing out through the grouting hole 2 can have a relatively regular shaped plugging surface under the limitation of the limiting frame 9, thereby realizing grouting plugging that spreads to the surrounding areas with the leakage point as the center, achieving efficient and reliable plugging, and avoiding the poor plugging effect caused by the single downflow of the plugging slurry.

[0040] When a plurality of limiting frames 9 are provided outside the embedded pipe 1, the plurality of embedded pipes 1 can be used in close proximity to each other, so that the coverage of the leaking point can be more comprehensive and accurate, and a small amount of plugging slurry can be used to quickly act on the leaking point when repairing the leak, and when the amount is small, it is easy to control the flow of the plugging slurry to form a certain thickness under the restriction of the limiting frame 9, so that the leak repairing effect is rapid and effective. Example

[0041] See also Figure 4-11 Among them, there are multiple embedded pipes 1 and the edges of the limiting frames 9 of each embedded pipe 1 are fixedly connected, and the hollow parts between the limiting frames 9 are fixedly connected with a compensating side plate 10, and a two-way hole 11 is provided in the middle of the compensating side plate 10.

[0042] The front side of the limiting frame 9 is fixedly connected with a back patch 12 , and the front side of the limiting frame 9 is provided with a connecting window 13 , which enables the inside of the limiting frame 9 to communicate with the compensating side plate 10 .

[0043] Among them, a partition plate 14 is provided on one side of the limiting frame 9 to compensate for the sealing plate, a partition hole 15 is opened in the middle of the partition plate 14, the embedded pipe 1 is connected to the partition hole 15 through the side branch pipe, and a grouting insert 16 is fixedly connected to the bidirectional hole 11 of the compensating side plate 10.

[0044] The grouting insert 16 is provided with a closed tube 17 on its outer wall, and a compensation frame 18 is fixedly connected to the outer wall of the closed tube 17 through a support rod. There are multiple compensation frames 18 and they correspond to the compensation side plates 10 one by one. The separator 14 is sunken into the limiting frame 9.

[0045] There is overlap between the spaces defined by the compensation frame 18 and the limiting frame 9 , and a one-way sheet is provided in the middle of the separation hole 15 of the separation sheet 14 .

[0046] Among them, the protective sheet 3 is a plastic sheet with a cross cut in the middle. When slurry is injected into the inside, the cross cut is opened and flows out, which can play a blocking role during installation to prevent debris from entering the inside.

[0047] Among them, the back patch 12 is a plastic sheet or a non-woven fabric sheet or a hot adhesive sheet or a waterproof roll. The back patch 12 is attached to the limiting frame 9, which is convenient for laying and leveling the film material, and can reduce damage and enhance the waterproof effect. During grouting, the slurry can effectively flow to the other side. At the same time, if a hot adhesive sheet is used, before grouting, hot air can be introduced into the embedded pipe 1 to stick the hot adhesive sheet and the waterproof roll on the other side together. The mutual adhesion can make up for the damage, thereby enhancing the waterproof effect. Or during grouting, adhesion is achieved through the temperature of the grouting liquid. When using a waterproof roll, a double-layer waterproof roll protection can be formed, and the water-proof effect is better.

[0048] A plurality of pre-buried pipes 1 with limiting frames 9 are fixed for use, and the gaps between the limiting frames 9 are filled by the side plates 10, so as to form an overall mesh-shaped limiting leak repair. The plugging slurry in the limiting frame 9 can be guided to the side plates 10 through the connecting windows 13, so as to form an encircling blockage during plugging, and fully cover the leaking point. At the same time, after the pre-buried pipes 1 are fully poured and reinforced, the integrity is the best, and the least amount of plugging slurry can be used to connect the plugging surface into a whole, and at the same time fill the plane deficiency.

[0049] When pre-embedding, the compensation frame 18 can be set at a preset position, and then the underground enclosure structure can be constructed, and the closing tube 17 can be connected to the steel bars or concrete of the underground enclosure structure as a whole, thereby providing a subsequent installation point for the pre-buried pipe 1, strengthening the bonding strength, and facilitating the plugging to directly act on the surface of the underground enclosure structure; the grouting insert 16 of the compensating side plate 10 is installed in the closing tube 17, and the grouting insert 16 can be arched in the middle and then directly plugged and fixed in the closing tube 17 or other methods can be used to complete the connection and installation of the pre-buried pipe 1; when grouting the leak point, the sealing fluid of the pre-buried pipe 1 is injected under the plugging of the back patch 12. The plugging slurry flows out from the corresponding grouting hole 2 and flows through the side branch pipe to the other side of the partition plate 14 and the underground retaining structure to form a relatively regular sealing surface. At the same time, the plugging liquid enters the compensation side plate 10 through the connecting window 13, and then flows out at the junction with the underground retaining structure through the guidance of the grouting insert 16. Under the restriction of the compensation frame 18, it connects with the plugging liquid at the limiting frame 9 to form an overall sealing surface. On the side of the underground retaining structure, the plugging liquid also fills the gap between the embedded pipe 1 and the limiting frame 9, and then forms a connection with the sealing surface on the other side, which can effectively ensure the sealing position and avoid the plugging from detaching.

Claims

1. An advance pre-buried device for treating water leakage in underground structures, characterized in that: The embedded pipe (1) comprises a plurality of grouting holes (2) formed on the wall of the embedded pipe (1), a protective sheet (3) being attached to the inner side of the grouting hole (2), a bottom plug (4) and an injection plug (5) being arranged inside the embedded pipe (1), a pull rod (6) being fixedly connected to the top of the bottom plug (4), a sleeve (7) being fixedly connected to the top of the injection plug (5), the injection plug (5) being located at the top of the bottom plug (4) and the pull rod (6) being located in the sleeve (7) and the two being slidably matched, and a sealing plug (8) being arranged at the top of the embedded pipe (1); The outer wall of the embedded pipe (1) is fixedly connected to a plurality of limiting frames (9), and the limiting frames (9) are located outside the grouting holes (2) and the two correspond one to one; The embedded pipe (1) is provided with a plurality of them, and the edges of the limiting frames (9) of each embedded pipe (1) are fixedly connected, and a compensating side plate (10) is fixedly connected to the hollowed-out portion between the limiting frames (9), and a bidirectional hole (11) is provided in the middle of the compensating side plate (10); The limiting frame (9) is provided with a separator (14) on one side of the compensating side plate (10), a separator hole (15) is provided in the middle of the separator (14), the embedded pipe (1) is connected to the separator hole (15) via a side branch pipe, and a grouting insert (16) is fixedly connected to the bidirectional hole (11) of the compensating side plate (10).

2. The advance pre-embedded device for treating water leakage in underground structures according to claim 1, characterized in that: The front side of the limiting frame (9) is fixedly connected to a back patch (12), and the front side of the limiting frame (9) is provided with a connecting window (13), wherein the connecting window (13) allows the inside of the limiting frame (9) to communicate with the compensating side plate (10).

3. The advance pre-embedded device for treating water leakage in underground structures according to claim 1 is characterized in that: The grouting insert (16) is provided with a closed tube (17) on its outer shell, and the outer wall of the closed tube (17) is fixedly connected to a compensation frame (18) via a support rod. The compensation frames (18) are provided in plurality and correspond one to one with the compensation side plates (10). The partition (14) is recessed into the limiting frame (9).

4. The advance pre-embedded device for treating water leakage in underground structures according to claim 3 is characterized in that: The spaces defined by the compensation frame (18) and the limiting frame (9) overlap, and a one-way sheet is provided in the middle of the separation hole (15) of the separation sheet (14).

5. The advance pre-embedded device for treating water leakage in underground structures according to claim 1, characterized in that: The protective sheet (3) is a plastic sheet and is provided with a cross cut in the middle.

6. The advance pre-embedded device for treating water leakage in underground structures according to claim 2, characterized in that: The back patch (12) is a plastic sheet, a non-woven fabric sheet, a thermal adhesive sheet, or a waterproof coiled material.

Images