CN220414297U - Foundation ditch dewatering well closing cap structure - Google Patents
Foundation ditch dewatering well closing cap structure Download PDFInfo
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- CN220414297U CN220414297U CN202321913442.6U CN202321913442U CN220414297U CN 220414297 U CN220414297 U CN 220414297U CN 202321913442 U CN202321913442 U CN 202321913442U CN 220414297 U CN220414297 U CN 220414297U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 112
- 239000010959 steel Substances 0.000 claims abstract description 112
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 23
- 239000010410 layer Substances 0.000 claims description 56
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 239000002344 surface layer Substances 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 16
- 238000010276 construction Methods 0.000 abstract description 5
- 230000001174 ascending effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 description 10
- 238000001556 precipitation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model discloses a foundation pit dewatering well sealing cover structure, which belongs to the technical field of dewatering well sealing covers and aims at solving the problem that when a foundation pit dewatering well is plugged by utilizing a sealing cover, the plugging effect and the waterproof performance of the foundation pit dewatering well are difficult to meet the use requirements; according to the waterproof sealing prefabricated member, the top water-stop steel ring plate and the bottom water-stop steel ring plate are jointly formed into three waterproof layers through the flexible waterproof coiled material layer, the top water-stop steel ring plate is arranged in a basin shape, the basin mouth faces the upstream surface, the underground water ascending resistance and the underground water ascending path are increased, the waterproof reliability is greatly improved, the sealing prefabricated member is placed at the wellhead of a dewatering well through the supporting piece, a concrete column is formed by pouring the inside of the steel sleeve, the steel sleeve is plugged through the steel plate, the construction operation is convenient, and the stability is high.
Description
Technical Field
The utility model belongs to the technical field of dewatering well covers, and particularly relates to a foundation pit dewatering well cover structure.
Background
In the process of underground foundation pit excavation construction, groundwater in the foundation pit is reduced by arranging a dewatering well, and especially, a soil layer with underground bearing water is more required to be provided with the dewatering well for preventing the phenomenon of damaging the safety of the foundation pit, such as sudden surges and the like, in the process of foundation pit excavation, and effective measures are required to be taken to plug the dewatering well in the foundation pit after the foundation pit construction is finished, so that the smooth proceeding of subsequent engineering is ensured.
At present, the plugging modes of the pressure reducing well are various, the used materials are different, the conventional well sealing operation generally injects concrete towards the inside of the well body, then the well lid is fixed at the well mouth part in a welding mode, the foundation pit pressure reducing well can be effectively plugged in the mode, and the internal solidified concrete is easily cracked and slipped due to the pressure-bearing water layer in the ground at the later stage, so that the water pressure below the pressure reducing well is changed, the filled concrete is cracked, water is easily discharged from the well mouth and the periphery of the well mouth through gaps, and therefore, the plugging effect and the waterproof performance of the sealing cover on the pressure reducing well mouth are particularly important.
Therefore, a capping structure of a dewatering well of a foundation pit is needed, and the problem that the plugging effect and the waterproof performance of the capping structure are difficult to meet the use requirement when the dewatering well of the foundation pit is plugged by using the capping in the prior art is solved.
Disclosure of Invention
The utility model aims to provide a foundation pit dewatering well sealing cover structure which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a foundation ditch dewatering well closing cap structure, is including setting up in the steel casing pipe of dewatering well pipe top, still includes:
the steel plate is welded and installed at the top end of the steel sleeve, and a concrete column filled between the steel sleeve and the dewatering well pipe is arranged on the bottom surface of the steel plate;
the concrete cushion layer is arranged above the precipitation well pipe and distributed on the outer surface of the bottom of the steel sleeve in a surrounding mode, and a supporting piece is arranged between the concrete cushion layer and the precipitation well pipe;
the raft board is arranged on the top surface of the concrete cushion layer and distributed on the outer surface of the steel sleeve in a surrounding mode, a waterproof assembly is arranged between the raft board and the concrete cushion layer, and a surface layer is arranged on the top surface of the raft board.
In the scheme, it is to be noted that the support piece includes four reinforcing bars that are the upper and lower distribution, is parallel distribution between two reinforcing bars that are located same height, and two reinforcing bars that are located not co-altitude are perpendicular distribution and the tip of reinforcing bar extends to the periphery of precipitation well pipe, is welded fastening and pour the shaping setting with concrete cushion an organic whole between four reinforcing bars.
It is further worth mentioning that the waterproofing assembly comprises:
the bottom water-stop steel ring plate is sleeved on the outer surface of the bottom of the steel sleeve and is arranged at the center of the concrete cushion layer in an integrally pouring and forming manner;
the top water-stopping steel ring plate is sleeved on the outer surface of the top of the steel sleeve and is integrally poured and arranged at the center of the raft;
the waterproof coiled material layer is arranged between the bottom of the waterproof coiled material layer and the top surface of the concrete cushion layer and the bottom surface of the raft layer, the top of the waterproof coiled material layer is attached to the bottom surface of the top water stop steel ring plate, and the middle of the waterproof coiled material layer is attached to the outer surface of the steel sleeve in a sleeved mode.
It should be further noted that the projection size of the bottom water-stop steel ring plate is consistent with the projection size of the top water-stop steel ring plate, and a downward inclined convex ring is arranged on the periphery of the top water-stop steel ring plate.
As a preferred embodiment, the height value of the steel sleeve is larger than the sum of the height values of the concrete cushion and the raft, the top end of the steel sleeve extends to the inside of the surface layer, and the bottom end of the steel sleeve extends to the inside of the precipitation well pipe.
Compared with the prior art, the foundation pit dewatering well sealing cover structure provided by the utility model at least comprises the following beneficial effects:
(1) The sealing cover prefabricated member is formed by a flexible waterproof coiled material layer, a top layer water stop steel annular plate and a bottom layer water stop steel annular plate together, the top layer water stop steel annular plate is arranged in a basin shape, a basin mouth faces the upstream surface, the upward resistance and the path of underground water are increased, the waterproof reliability is greatly improved, the sealing cover prefabricated member is placed at the wellhead of a dewatering well through a supporting piece, a concrete column is formed by pouring in a steel sleeve, the steel sleeve is plugged by a steel plate, the construction operation is convenient, and the stability is high.
(2) The bottom water-stop steel ring plate and the top water-stop steel ring plate are respectively installed on the outer surfaces of the steel sleeves, then the concrete cushion is poured on the periphery of the bottom of the steel sleeves until the bottom water-stop steel ring plate is located at the center of the concrete cushion, flexible waterproof coiled materials are arranged on the surfaces of the concrete cushion, the steel sleeves are located on the outer surfaces of the bottom water-stop steel ring plate and the top water-stop steel ring plate and the bottom surface of the top water-stop steel ring plate, so that a flexible waterproof coiled material layer is formed, then the raft is poured until the top water-stop steel ring plate is located at the center of the raft, and therefore a sealing prefabricated member of a precipitation wellhead is completed.
Drawings
FIG. 1 is a schematic view of the main section structure of the present utility model;
fig. 2 is a schematic top view of a partial structure of the support member of the present utility model.
In the figure: 1. a steel sleeve; 2. a steel plate; 3. a concrete column; 4. a concrete cushion layer; 5. a raft; 6. a surface layer; 7. reinforcing steel bars; 8. a bottom water-stop steel ring plate; 9. a top water-stop steel ring plate; 10. and a waterproof coiled material layer.
Detailed Description
The utility model is further described below with reference to examples.
Referring to fig. 1-2, the utility model provides a foundation pit dewatering well sealing cover structure, which comprises a steel sleeve 1 arranged above a dewatering well pipe, wherein the steel sleeve 1 is made of a hot-rolled seamless steel pipe, and further comprises a steel plate 2, the steel plate 2 is welded and installed at the top end of the steel sleeve 1, and a concrete column 3 filled between the steel sleeve 1 and the dewatering well pipe is arranged at the bottom surface of the steel plate 2;
the concrete cushion layer 4 is arranged above the precipitation well pipe and distributed on the outer surface of the bottom of the steel sleeve 1 in a surrounding manner, and a supporting piece is arranged between the concrete cushion layer 4 and the precipitation well pipe;
the raft 5, the raft 5 sets up in the top surface of concrete cushion 4 and encircle and distribute in the surface of steel casing 1, is provided with waterproof assembly between raft 5 and the concrete cushion 4, and the top surface of raft 5 is provided with surface course 6.
Further, as shown in fig. 2, it is worth specifically explaining that the supporting member includes four reinforcing bars 7 distributed up and down, two reinforcing bars 7 located at the same height are distributed in parallel, two reinforcing bars 7 located at different heights are distributed vertically, the ends of the reinforcing bars 7 extend to the periphery of the precipitation well pipe, and the four reinforcing bars 7 are welded and fixed and are integrally cast with the concrete cushion layer 4.
As further shown in fig. 1, it is worth specifically explaining that the waterproof assembly comprises a bottom water-stop steel ring plate 8, wherein the bottom water-stop steel ring plate 8 is sleeved on the outer surface of the bottom of the steel sleeve 1 and is arranged at the center of the concrete cushion layer 4 in an integrally casting and forming manner;
the top water-stop steel ring plate 9 is sleeved on the top outer surface of the steel sleeve 1 and is positioned at the center of the raft 5 in an integrally casting manner;
the waterproof coiled material layer 10, the bottom of waterproof coiled material layer 10 set up with the top surface of concrete cushion 4 and between the bottom surface on raft 5 layer, the top laminating of waterproof coiled material layer 10 is provided with the bottom surface of top layer stagnant water steel annular plate 9, the surface of steel bushing 1 is located to the middle part laminating cover of waterproof coiled material layer 10.
Further, as shown in fig. 1, it is worth specifically explaining that the projection size of the bottom water stop steel ring plate 8 is identical to the projection size of the top water stop steel ring plate 9, and the periphery of the top water stop steel ring plate 9 is provided with a downward inclined convex ring.
Notably, the waterproof coiled material layer 10 is attached to the outer surface of the steel sleeve 1 and is tightly sealed through the clamp, three waterproof layers are formed by the flexible waterproof coiled material layer 10, the top water stop steel ring plate 9 and the bottom water stop steel ring plate 8, the top water stop steel ring plate 9 is arranged in a basin shape, basin openings face the water facing surface, the upward resistance and the path of underground water are increased, and the waterproof reliability is greatly improved.
Further, as shown in fig. 1, it is worth specifically explaining that the height value of the steel sleeve 1 is greater than the sum of the height values of the concrete cushion layer 4 and the raft 5, the top end of the steel sleeve 1 extends to the inside of the surface layer 6, the bottom end of the steel sleeve 1 extends to the inside of the precipitation well pipe, the welding convenience of the steel plate 2 is improved, and the concrete column 3 is cast in the steel sleeve 1, so that the use strength is improved to a certain extent.
The scheme comprises the following working processes: the method comprises the steps that a bottom water-stop steel ring plate 8 and a top water-stop steel ring plate 9 are respectively installed on the outer surface of a steel sleeve 1, then a concrete cushion layer 4 is poured on the periphery of the bottom of the steel sleeve until the bottom water-stop steel ring plate 8 is located at the center position of the concrete cushion layer 4, flexible waterproof coiled materials are arranged on the surface of the concrete cushion layer 4, the outer surfaces of the steel sleeve 1 and the bottom water-stop steel ring plate 8 and the top water-stop steel ring plate 9 and the bottom surface of the top water-stop steel ring plate 9, so that a flexible waterproof coiled material layer 10 is formed, then a raft plate 5 is poured until the top water-stop steel ring plate 9 is located at the center position of the raft plate 5, and therefore a sealing prefabricated member of a dewatering wellhead is completed;
when carrying out shutoff to foundation ditch dewatering well and handling, when stopping the dewatering, take out the dewatering pump, place the closing cap prefab and be the parallel and level setting in dewatering well wellhead top for waterproof steel sleeve pipe 1 is coaxial distribution with the dewatering well wellhead, adopts the grit to backfill to dewatering well wellhead upper portion two meters depths to dewatering well bottom this moment, adopts the expanded concrete to pour and forms concrete column 3, welds sealedly with steel sheet 2 in the top mouth department of steel sleeve pipe 1 at last, is pouring surface course 6, thereby accomplishes the shutoff to the foundation ditch dewatering well wellhead and handles.
The working process can be as follows: the sealing cover prefabricated member is added with the top layer water stop steel ring plate 9 and the bottom layer water stop steel ring plate 8 through the flexible waterproof coiled material layer 10 to jointly form three waterproof layers, the top layer water stop steel ring plate 9 is in a basin-shaped structure, a basin opening faces the upstream surface, the underground water ascending resistance and the path are increased, the waterproof reliability is greatly improved, the sealing cover prefabricated member is placed at the wellhead of a dewatering well through a supporting piece, a concrete column 3 is formed by pouring in the steel sleeve 1, the steel sleeve 1 is plugged through the steel plate 2, the construction operation is convenient, and the stability is high.
Claims (5)
1. The utility model provides a foundation ditch dewatering well closing cap structure, is including setting up steel casing (1) in dewatering well pipe top, its characterized in that still includes:
the steel plate (2) is welded and installed at the top end of the steel sleeve (1), and a concrete column (3) filled between the steel sleeve (1) and the dewatering well pipe is arranged on the bottom surface of the steel plate (2);
the concrete cushion layer (4) is arranged above the dewatering well pipe and distributed on the outer surface of the bottom of the steel sleeve (1) in a surrounding mode, and a supporting piece is arranged between the concrete cushion layer (4) and the dewatering well pipe;
the raft board (5) is arranged on the top surface of the concrete cushion layer (4) and distributed on the outer surface of the steel sleeve (1) in a surrounding mode, a waterproof assembly is arranged between the raft board (5) and the concrete cushion layer (4), and a surface layer (6) is arranged on the top surface of the raft board (5).
2. The foundation pit dewatering well cover structure according to claim 1, wherein: the support piece comprises four reinforcing steel bars (7) which are distributed up and down, wherein the reinforcing steel bars (7) which are located at the same height are distributed in parallel, the reinforcing steel bars (7) which are located at different heights are distributed vertically, the end parts of the reinforcing steel bars (7) extend to the periphery of the dewatering well pipe, and the four reinforcing steel bars (7) are welded and fixed and are integrally cast with the concrete cushion layer (4).
3. The foundation pit dewatering well cover structure according to claim 2, wherein: the waterproof assembly includes:
the bottom water-stopping steel ring plate (8) is sleeved on the outer surface of the bottom of the steel sleeve (1) and is integrally cast and formed at the center of the concrete cushion layer (4);
the top water-stop steel ring plate (9) is sleeved on the top outer surface of the steel sleeve (1) and is integrally poured and arranged at the center of the raft (5);
the waterproof coiled material layer (10), the bottom of waterproof coiled material layer (10) set up with the top surface of concrete cushion (4) and between the bottom surface on raft (5) layer, the top laminating of waterproof coiled material layer (10) is provided with the bottom surface of top layer stagnant water steel annular slab (9), the surface of steel sleeve (1) is located in the middle part laminating cover of waterproof coiled material layer (10).
4. A pit dewatering well cover structure according to claim 3, wherein: the projection size of the bottom water-stop steel ring plate (8) is consistent with the projection size of the top water-stop steel ring plate (9), and a downward-inclined convex ring is arranged on the periphery of the top water-stop steel ring plate (9).
5. The foundation pit dewatering well cover structure according to claim 4, wherein: the height value of the steel sleeve (1) is larger than the sum of the height values of the concrete cushion layer (4) and the raft plates (5), the top end of the steel sleeve (1) extends to the inside of the surface layer (6), and the bottom end of the steel sleeve (1) extends to the inside of the dewatering well pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321913442.6U CN220414297U (en) | 2023-07-20 | 2023-07-20 | Foundation ditch dewatering well closing cap structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321913442.6U CN220414297U (en) | 2023-07-20 | 2023-07-20 | Foundation ditch dewatering well closing cap structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220414297U true CN220414297U (en) | 2024-01-30 |
Family
ID=89652795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321913442.6U Active CN220414297U (en) | 2023-07-20 | 2023-07-20 | Foundation ditch dewatering well closing cap structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220414297U (en) |
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2023
- 2023-07-20 CN CN202321913442.6U patent/CN220414297U/en active Active
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