Foundation pit tube well dewatering well sealing anti-leakage structure

Abstract

The utility model discloses a kind of foundation pit tube well dewatering well sealing anti-seepage structures, including tube well body, filter layer, reinforcing anchor rod, anchoring block, the tube well body is placed after using mechanical hole-forming, and the periphery of tube well body is equipped with filter layer, filter layer is located below fill, and filter layer is graded round gravel material, and multiple reinforcing anchor rods are equipped at filter layer, reinforcing anchor rod is obliquely driven into soil, and reinforcing anchor rod is equipped with anchoring block away from filter layer side, the inside upper portion of tube well body is sequentially equipped with first well sealing section, second well sealing section, third well sealing section, protection section from below to above, and first well sealing section, second well sealing section, third well sealing section are sequentially constructed from below to above. The utility model design is reasonable;The design of first well sealing section, second well sealing section, third well sealing section improves the anti-seepage capacity.

Description

Technical Field

[0001] This utility model belongs to the field of engineering dewatering, and in particular relates to a dewatering sealing and seepage prevention structure for foundation pit pipe wells. Background Technology

[0002] In engineering construction, well dewatering is a common method to lower the groundwater level. Lowering the groundwater level provides a suitable construction environment, which facilitates subsequent construction. After the dewatering operation is completed, the well needs to be sealed. If the well is not properly sealed, the groundwater will affect the safety of the building later. Existing foundation pit well dewatering and sealing methods often only cover one side of the structure, resulting in poor waterproofing. Utility Model Content

[0003] The purpose of this utility model is to provide a structure for sealing and preventing leakage of foundation pit pipe wells to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A well sealing and seepage prevention structure for foundation pit well dewatering includes a well body, a filter layer, reinforcing anchors, and anchor blocks. The well body is inserted after mechanical drilling. A filter layer is provided around the outside of the well body, located below the backfill. The filter layer is made of graded gravel material. Multiple reinforcing anchors are installed at the filter layer, and the reinforcing anchors are driven into the soil at an angle. An anchor block is provided on the side of the reinforcing anchors away from the filter layer. Inside the well body, from bottom to top, there are a first sealing section, a second sealing section, a third sealing section, and a protection section. The first sealing section, the second sealing section, and the third sealing section are constructed sequentially from bottom to top.

[0005] Preferably, the inner wall of the well body is provided with multiple grooves to increase friction. The grooves are evenly distributed along the inner wall of the well body. The outer side of the well body is wrapped with a waterproof layer. An additional layer is laid at the joint of the waterproof layer. The waterproof layer and the additional layer are bonded to the outer wall of the well body. The waterproof layer and the additional layer are located inside the filter layer. That is, the waterproof layer and the additional layer are laid first, and then the filter layer is constructed.

[0006] Preferably, the first well sealing section includes a steel reinforcement layer and a waterproof concrete layer. The steel reinforcement layer is circular in design, and its outer periphery is connected to the inner wall of the well body. The waterproof concrete layer is poured on top of the steel reinforcement layer.

[0007] Preferably, the second well sealing section includes a waterproof geotextile layer and a concrete layer, with the waterproof geotextile layer laid on the waterproof concrete layer and the concrete layer poured on the waterproof geotextile layer.

[0008] Preferably, the third sealing section is a plain concrete layer, the protective section is designed as an inverted frustum, the protective section is made of waterproof material, and the protective section is equipped with support rods, which are connected to the inner wall of the well body. There are at least four support rods.

[0009] Compared with the prior art, this utility model has the following advantages: the design of this utility model is reasonable; the design of the filter layer, waterproof layer and additional layer can protect the outside of the well body and reduce the impact of the surrounding soil and groundwater on the well body; the design of the first sealing section, the second sealing section and the third sealing section improves the firmness and waterproof and seepage prevention capabilities; the design of the protective section can protect the third sealing section and prevent debris from falling and causing damage that affects the later waterproof and seepage prevention functions; at the same time, the design of the truncated cone improves the firmness after installation; the reinforced anchor rods and anchor blocks at the filter layer increase the overall stability. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the anti-seepage structure for dewatering and sealing wells in the foundation pit of this utility model.

[0011] Figure 2 This is an exploded cross-sectional view of the well body of the foundation pit pipe well dewatering sealing and seepage prevention structure of this utility model.

[0012] Figure 3 This is an exploded view of the first sealing section of the foundation pit pipe well dewatering sealing and seepage prevention structure of this utility model.

[0013] Figure 4 This is an exploded view of the second sealing section of the foundation pit pipe well dewatering sealing and seepage prevention structure of this utility model. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] like Figures 1-4As shown, a well sealing and seepage prevention structure for foundation pit well dewatering includes a well body 1, a filter layer 2, reinforcing anchor rods 3, and anchor blocks 4. The well body 1 is inserted after mechanical drilling. The filter layer 2 is provided around the outside of the well body 1, located below the backfill. The filter layer 2 is made of graded gravel material and is located in the middle and upper part of the well body. Multiple reinforcing anchor rods 3 are installed at the filter layer 2, and the reinforcing anchor rods 3 are driven into the soil at an angle. An anchor blocks 4 are provided on the side of the reinforcing anchor rods 3 away from the filter layer 2. Specifically, holes are first drilled at the locations where the reinforcing anchor rods need to be installed. The cement grout pipe is inserted into the hole to cast the anchor block, and then the reinforcing anchor rod is inserted. The upper part of the manhole body 1 is provided with a first sealing section 8, a second sealing section 9, a third sealing section 10, and a protective section 11, arranged sequentially from bottom to top. The first sealing section 8, the second sealing section 9, and the third sealing section 10 are constructed sequentially from bottom to top. The filter layer is flush with the first and second sealing sections. Multiple grooves 5 for increasing friction are formed on the inner wall of the manhole body 1, and the grooves 5 are evenly distributed along the inner wall of the manhole body 1. The outer side of the manhole body 1 is wrapped with a waterproof layer 6. The waterproof layer 6 is connected to... An additional layer 7 is laid at the joint. The waterproof layer 6 and the additional layer 7 are bonded to the outer wall of the well body 1. The waterproof layer 6 and the additional layer 7 are located inside the filter layer 2. That is, the waterproof layer 6 and the additional layer 7 are laid first, and then the filter layer 2 is constructed. The waterproof layer and the additional layer prevent external water from entering the well body and affecting seepage prevention. The first sealing section 8 includes a steel reinforcement layer 13 and a waterproof concrete layer 14. The steel reinforcement layer 13 is circular in design. The outer perimeter of the steel reinforcement layer 13 is connected to the inner wall of the well body 1. The waterproof concrete layer 14 is poured on top of the steel reinforcement layer 13 to prevent seepage. The water-concrete layer can prevent water seepage inside the well body. The second sealing section 9 includes a waterproof geotextile layer 15 and a concrete layer 16. The waterproof geotextile layer 15 is laid on the waterproof concrete layer 14, and the concrete layer 16 is poured on the waterproof geotextile layer 15. The waterproof geotextile layer can provide secondary seepage protection. The third sealing section 10 is a plain concrete layer. The protection section 11 has an inverted frustum design. The protection section 11 is made of waterproof material. The protection section 11 is equipped with support rods 12, which are connected to the inner wall of the well body 1. There are at least four support rods 12.

[0016] The working principle of this utility model is as follows: First, the well body is constructed. After the well body is installed, dewatering is carried out while the surrounding soil is excavated. After excavation to a suitable height, the additional layer and waterproof layer are constructed. The additional layer and waterproof layer are fixed to the outside of the well body by full adhesion. Then, the filter layer is constructed. The waterproof layer needs to be protected during the construction of the filter layer. After the well body is dewatered, the first sealing section, the second sealing section, the third sealing section, and the protection section are constructed.

[0017] The above description is a preferred embodiment of the present utility model. For those skilled in the art, any changes, modifications, substitutions and variations made to the implementation methods without departing from the principles and spirit of the present utility model, based on the teachings of the present utility model, still fall within the protection scope of the present utility model.

Claims

1. A well-sealing and seepage prevention structure for dewatering in foundation pits, comprising a well body (1), a filter layer (2), reinforcing anchor bolts (3), and anchor blocks (4), characterized in that, The well body (1) is inserted after mechanical drilling. A filter layer (2) is provided around the outside of the well body (1). The filter layer (2) is located below the backfill. The filter layer (2) is made of graded gravel material. Multiple reinforcing anchor rods (3) are provided at the filter layer (2). The reinforcing anchor rods (3) are driven into the soil at an angle. An anchor block (4) is provided on the side of the reinforcing anchor rod (3) away from the filter layer (2). The upper part of the well body (1) is provided with a first sealing section (8), a second sealing section (9), a third sealing section (10), and a protection section (11) from bottom to top. The first sealing section (8), the second sealing section (9), and the third sealing section (10) are constructed from bottom to top.

2. The foundation pit pipe well dewatering sealing and seepage prevention structure according to claim 1, characterized in that, The inner wall of the well body (1) is provided with multiple grooves (5) to increase friction. The grooves (5) are evenly distributed along the inner wall of the well body (1). The outer side of the well body (1) is wrapped with a waterproof layer (6). An additional layer (7) is laid at the joint of the waterproof layer (6). The waterproof layer (6) and the additional layer (7) are bonded to the outer wall of the well body (1). The waterproof layer (6) and the additional layer (7) are located inside the filter layer (2). That is, the waterproof layer (6) and the additional layer (7) are laid first, and then the filter layer (2) is constructed.

3. The foundation pit pipe well dewatering sealing and seepage prevention structure according to claim 1, characterized in that, The first well sealing section (8) includes a steel reinforcement layer (13) and a waterproof concrete layer (14). The steel reinforcement layer (13) is circular in design. The outer periphery of the steel reinforcement layer (13) is connected to the inner wall of the well body (1). The waterproof concrete layer (14) is poured on top of the steel reinforcement layer (13).

4. The foundation pit pipe well dewatering sealing and seepage prevention structure according to claim 3, characterized in that, The second sealing section (9) includes a waterproof geotextile layer (15) and a concrete layer (16). The waterproof geotextile layer (15) is laid on the waterproof concrete layer (14), and the concrete layer (16) is poured on the waterproof geotextile layer (15).

5. The foundation pit pipe well dewatering sealing and seepage prevention structure according to claim 1, characterized in that, The third sealing section (10) is a plain concrete layer, the protection section (11) is designed as an inverted frustum, the protection section (11) is made of waterproof material, and the protection section (11) is provided with support rods (12), which are connected to the inner wall of the well body (1). There are at least four support rods (12).

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