CN115233718B - Anti-seepage plugging structure of foundation pit dewatering well and plugging method of foundation pit dewatering well - Google Patents
Anti-seepage plugging structure of foundation pit dewatering well and plugging method of foundation pit dewatering well Download PDFInfo
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- CN115233718B CN115233718B CN202210836069.2A CN202210836069A CN115233718B CN 115233718 B CN115233718 B CN 115233718B CN 202210836069 A CN202210836069 A CN 202210836069A CN 115233718 B CN115233718 B CN 115233718B
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- foundation pit
- dewatering well
- bottom plate
- collecting tank
- water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/22—Lining sumps in trenches or other foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Sewage (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The application discloses an anti-seepage plugging structure of a foundation pit dewatering well and a plugging method of the foundation pit dewatering well, wherein the structure comprises the following steps: the broken stone water filtering layer is paved below the cushion layer of the foundation pit bottom plate and positioned at the side part of the dewatering well, and the wellhead of the dewatering well extends to the upper part of the foundation pit bottom plate and is blocked with a well cover; the water collecting tank is provided with a perforation, the wellhead extends into the water collecting tank, and the water collecting tank is filled with water absorbing materials; the honeycomb duct is provided with a first end and a second end which are opposite, the first end of the honeycomb duct is communicated with the water collecting tank, the honeycomb duct penetrates through the foundation pit bottom plate and the cushion layer, and the second end of the honeycomb duct extends into the crushed stone water filtering layer; and the sealing sleeve is provided with an upper sealing end and a lower opening end which are opposite to each other, the sealing sleeve is sleeved outside the flow guide pipe, the water collecting tank and the wellhead, and the lower opening end is connected with the foundation pit bottom plate in a sealing way. The application solves the problem of high leakage risk of the conventional well sealing method of the dewatering well.
Description
Technical Field
The application relates to the technical field of building construction, in particular to an anti-seepage plugging structure of a foundation pit dewatering well and a plugging method of the foundation pit dewatering well.
Background
Currently, large commercial buildings in China are becoming common, and deep foundation pits are also frequently used. The plugging of the dewatering well in the deep foundation pit has direct influence on the integral waterproofing of the building and whether the subsequent construction process can be carried out smoothly.
The well sealing measures of the conventional dewatering well are that when the bottom plate of a foundation pit is constructed, a large amount of water is drained from the dewatering well for a long time, sand, broken stone, cement and other materials are filled in the dewatering well by utilizing the flowing and rising clearance time of the water, the dewatering well is tamped while being tamped by vibration, and finally a steel plate well cover is placed at a well mouth and welded with a well pipe.
The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
In order to overcome the defects existing in the prior art, the application provides an anti-seepage plugging structure of a foundation pit dewatering well and a plugging method of the foundation pit dewatering well, so as to solve the problem of high leakage risk of the conventional well plugging method of the dewatering well.
In order to achieve the above purpose, a seepage-proofing plugging structure of a dewatering well of a foundation pit is provided, comprising:
the broken stone water filtering layer is paved below the cushion layer of the foundation pit bottom plate and is positioned at the side part of the dewatering well, and the wellhead of the dewatering well extends to the upper part of the foundation pit bottom plate and is plugged with a well cover;
the water collecting tank is provided with a perforation, the wellhead extends into the water collecting tank, and the water collecting tank is filled with water absorbing materials;
the guide pipe is provided with a first end and a second end which are opposite, the first end of the guide pipe is communicated with the water collecting tank, the guide pipe penetrates through the foundation pit bottom plate and the cushion layer, and the second end of the guide pipe extends into the crushed stone water filtering layer; and
the sealing sleeve is provided with an upper closed end and a lower open end which are opposite to each other, the sealing sleeve is sleeved outside the flow guide pipe, the water collecting tank and the wellhead, and the lower open end is connected with the foundation pit bottom plate in a sealing mode.
Further, the water absorbing material is a sponge block.
Further, the quantity of honeycomb ducts is many, and many honeycomb ducts follow the circumference direction interval setting of header tank.
Further, the draft tube is vertically arranged.
Further, a filter screen is arranged in the second end of the flow guide pipe.
Further, the broken stone water filtering layer is arranged at the bottom of the cushion layer, and the dewatering well penetrates through the broken stone water filtering layer.
The application provides a plugging method of a foundation pit dewatering well adopting the seepage-proofing plugging structure of the foundation pit dewatering well, which comprises the following steps:
paving a broken stone water filtering layer in the soil body at the bottom of the foundation pit before pouring the cushion layer of the foundation pit bottom plate, so that the broken stone water filtering layer is positioned at the side part of the dewatering well;
inserting the second end of the flow guide pipe into the crushed stone water filtering layer, so that the first end of the flow guide pipe extends to the upper part of the crushed stone water filtering layer;
pouring the cushion layer and the foundation pit bottom plate on the crushed stone water filtering layer, so that a wellhead of the dewatering well extends to the upper side of the foundation pit bottom plate and is plugged with a well cover, the flow guide pipe penetrates through the cushion layer and the foundation pit bottom and the first end of the flow guide pipe extends to the upper side of the foundation pit bottom plate;
filling water absorbing materials into a water collecting tank and installing the water collecting tank at a wellhead of the dewatering well so that the wellhead extends into the water collecting tank;
communicating a first end of the flow guide pipe with the water collection tank;
and sleeving the sealing sleeve on the diversion pipe, the water collecting tank and the outside of the wellhead, and sealing and connecting the lower opening end of the sealing sleeve to the foundation pit bottom plate.
The anti-seepage plugging structure for the foundation pit dewatering well has the advantages that the anti-seepage plugging structure can be used for rapidly plugging the dewatering well, cannot be constructed due to high water level rising speed, is simple and easy to implement, and can effectively control the well plugging effect.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of an impermeable plugging structure of a dewatering well of a foundation pit in an embodiment of the application.
Fig. 2 is a cross-sectional view of an impermeable plugging structure for a dewatering well of a foundation pit in an embodiment of the application.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 2, the present application provides an anti-seepage plugging structure for a dewatering well of a foundation pit, comprising: the device comprises a crushed stone water filtering layer 1, a water collecting tank 2, a flow guide pipe 3 and a sealing sleeve 4.
In this embodiment, the crushed stone water filtering layer 1 is laid under the cushion layer 6 of the foundation pit bottom plate 5 before the cushion layer under the foundation pit bottom plate is poured. The crushed stone water filtering layer is arranged at the side part of the dewatering well 7. After pouring the cushion layer and the foundation pit bottom plate in sequence from bottom to top, the wellhead of the dewatering well 7 extends to the upper side of the foundation pit bottom plate 5 and is plugged with a well cover 71.
The water collecting tank 2 is a closed box body, and a cavity is formed in the closed box body. The water collection tank 2 is provided with a perforation, the wellhead of the dewatering well extends into the water collection tank 2, and a cavity in the water collection tank 2 is filled with water absorbing materials. The water collection tank is used for containing ground water permeated out from the well lid of the dewatering well, and the permeated water is absorbed by the water absorbing material.
The draft tube 3 has opposite first and second ends. The first end of the flow guide pipe 3 is communicated with the water collecting tank 2, and the second end of the flow guide pipe 3 penetrates through the foundation pit bottom plate 5 and the cushion layer 6 and then extends into the crushed stone water filtering layer 1. The flow guide pipe 3 is used for guiding the penetrating water into the broken stone water filtering layer below the cushion layer of the foundation pit bottom plate after the water absorbing material is saturated to absorb water, so that the penetrating water is discharged into the soil body below the cushion layer.
The closing sleeve 4 has opposite upper and lower closed ends. The sealing sleeve 4 is sleeved outside the flow guide pipe 3, the water collecting tank 2 and the wellhead. The lower opening end of the sealing sleeve 4 is connected with the foundation pit bottom plate 5 in a sealing way. The sealing sleeve 4 is in sealing connection with the foundation pit bottom plate, so that a sealing space is formed in the sealing sleeve, and the sealing sleeve is used as a second waterproof line of the dewatering well on one hand, and the water collection tank and the diversion pipe are protected from being damaged due to collision on the other hand.
The anti-seepage plugging structure of the foundation pit dewatering well can quickly seal the dewatering well, cannot be constructed due to high water level rising speed, is simple and easy to implement, and can effectively control the well sealing effect.
The anti-seepage plugging structure part material of the foundation pit dewatering well can be made of on-site waste materials, so that the waste is utilized, and the anti-seepage plugging structure part material is longer in use
In this embodiment, the water absorbing material is a sponge block. The header tank includes bottom plate, roof and curb plate. The bottom plate is provided with a perforation, the upper end of the dewatering well penetrates through the bottom plate and extends to the upper side of the bottom plate, and the top plate and the bottom plate are arranged oppositely. The roof sets up in the top of bottom plate, and the well head of precipitation well sets up in the below of roof. The wellhead of the dewatering well extends to a position 100mm above the bottom plate of the water collecting tank.
The side plate is connected between the bottom plate and the top plate and is closed. In this embodiment, the bottom plate and top plate are circular, and the outer diameter of the bottom plate is greater than the outer diameter of the dewatering well.
In the present embodiment, the number of the flow guide pipes 3 is plural, and the plural flow guide pipes 3 are arranged at intervals along the circumferential direction of the water collection tank 2.
As a preferred embodiment, the side plate is provided with four connecting holes. The number of the flow guiding pipes is four. The flow guiding pipe 3 is vertically arranged. The first end of the honeycomb duct is connected to the connecting hole of the side plate. A filter screen is arranged in the second end of the flow guiding pipe 3.
In this embodiment, the crushed stone water filtering layer 1 is arranged at the bottom of the cushion layer 6. The broken stone water filtering layer is attached to the bottom of the cushion layer. The dewatering well 7 penetrates the crushed stone water filtering layer 1.
The application provides a plugging method of a foundation pit dewatering well adopting an anti-seepage plugging structure of the foundation pit dewatering well, which comprises the following steps:
s1: before the cushion layer 6 of the foundation pit bottom plate 5 is poured, a broken stone water filtering layer 1 is laid in the soil body at the bottom of the foundation pit, so that the broken stone water filtering layer 1 is positioned at the side part of the dewatering well 7.
S2: the second end of the flow guide pipe 3 is inserted into the crushed stone water filtering layer 1, so that the first end of the flow guide pipe 3 extends to the upper side of the crushed stone water filtering layer 1.
S3: pouring the cushion layer 6 and the foundation pit bottom plate 5 on the gravel water filtering layer 1, enabling the wellhead of the dewatering well 7 to extend to the upper side of the foundation pit bottom plate 5 and plugging the well cover 71, enabling the flow guide pipe 3 to penetrate through the cushion layer 6 and the foundation pit bottom and enabling the first end of the flow guide pipe 3 to extend to the upper side of the foundation pit bottom plate 5.
S4: the water-absorbing material is filled in the water collection tank 2 and the water collection tank 2 is arranged at the wellhead of the dewatering well 7, so that the wellhead extends into the water collection tank 2.
S5: the first end of the flow guide pipe 3 is communicated with the water collection tank 2.
S6: the sealing sleeve 4 is sleeved outside the flow guide pipe 3, the water collecting tank 2 and the wellhead, and the lower opening end of the sealing sleeve 4 is connected with the foundation pit bottom plate 5 in a sealing manner.
The application relates to an anti-seepage plugging structure of a foundation pit dewatering well and a plugging method of the foundation pit dewatering well, which are characterized in that a well-sealing measure system is formed by a closed sleeve, a water collecting tank, water absorbing materials, a broken stone water filtering layer and the like, water leaked by a pipe well cover plate of the dewatering well is absorbed through the water absorbing materials cotton in the water collecting tank, and after the fine holes in a sponge are filled, the water filled in the water collecting tank is discharged into the broken stone water filtering layer below a cushion layer of a foundation pit bottom plate through a diversion pipe connected with the water collecting tank, and the broken stone water filtering layer and the closed sleeve form a closed state.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (7)
1. The utility model provides a seepage prevention shutoff structure of foundation ditch dewatering well which characterized in that includes:
the broken stone water filtering layer is paved below the cushion layer of the foundation pit bottom plate and is positioned at the side part of the dewatering well, and the wellhead of the dewatering well extends to the upper part of the foundation pit bottom plate and is plugged with a well cover;
the water collecting tank is provided with a perforation, the wellhead extends into the water collecting tank, and the water collecting tank is filled with water absorbing materials;
the guide pipe is provided with a first end and a second end which are opposite, the first end of the guide pipe is communicated with the water collecting tank, the guide pipe penetrates through the foundation pit bottom plate and the cushion layer, and the second end of the guide pipe extends into the crushed stone water filtering layer; and
the sealing sleeve is provided with an upper closed end and a lower open end which are opposite to each other, the sealing sleeve is sleeved outside the flow guide pipe, the water collecting tank and the wellhead, and the lower open end is connected with the foundation pit bottom plate in a sealing mode.
2. The impermeable plugging structure of a dewatering well of a foundation pit according to claim 1, wherein the water absorbing material is a sponge block.
3. The seepage-proofing plugging structure of a dewatering well of a foundation pit according to claim 1, wherein the number of the diversion pipes is multiple, and the diversion pipes are arranged at intervals along the circumferential direction of the water collection tank.
4. A seepage prevention plugging structure for a dewatering well of a foundation pit according to claim 3, wherein the diversion pipe is vertically arranged.
5. The seepage prevention plugging structure for the dewatering well of the foundation pit, according to claim 4, wherein a filter screen is arranged in the second end of the guide pipe.
6. The impermeable plugging structure of a dewatering well of a foundation pit according to claim 1, wherein the crushed stone water filtering layer is arranged at the bottom of the cushion layer, and the dewatering well penetrates through the crushed stone water filtering layer.
7. A method for plugging a foundation pit dewatering well by adopting the seepage-proofing plugging structure of the foundation pit dewatering well as set forth in any one of claims 1 to 6, characterized by comprising the steps of:
paving a broken stone water filtering layer in the soil body at the bottom of the foundation pit before pouring the cushion layer of the foundation pit bottom plate, so that the broken stone water filtering layer is positioned at the side part of the dewatering well;
inserting the second end of the flow guide pipe into the crushed stone water filtering layer, so that the first end of the flow guide pipe extends to the upper part of the crushed stone water filtering layer;
pouring the cushion layer and the foundation pit bottom plate on the crushed stone water filtering layer, so that a wellhead of the dewatering well extends to the upper side of the foundation pit bottom plate and is plugged with a well cover, the flow guide pipe penetrates through the cushion layer and the foundation pit bottom and the first end of the flow guide pipe extends to the upper side of the foundation pit bottom plate;
filling water absorbing materials into a water collecting tank and installing the water collecting tank at a wellhead of the dewatering well so that the wellhead extends into the water collecting tank;
communicating a first end of the flow guide pipe with the water collection tank;
and sleeving the sealing sleeve on the diversion pipe, the water collecting tank and the outside of the wellhead, and sealing and connecting the lower opening end of the sealing sleeve to the foundation pit bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210836069.2A CN115233718B (en) | 2022-07-15 | 2022-07-15 | Anti-seepage plugging structure of foundation pit dewatering well and plugging method of foundation pit dewatering well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210836069.2A CN115233718B (en) | 2022-07-15 | 2022-07-15 | Anti-seepage plugging structure of foundation pit dewatering well and plugging method of foundation pit dewatering well |
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| Publication Number | Publication Date |
|---|---|
| CN115233718A CN115233718A (en) | 2022-10-25 |
| CN115233718B true CN115233718B (en) | 2023-11-14 |
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| CN202210836069.2A Active CN115233718B (en) | 2022-07-15 | 2022-07-15 | Anti-seepage plugging structure of foundation pit dewatering well and plugging method of foundation pit dewatering well |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2008126646A (en) * | 2008-06-30 | 2010-01-10 | Закрытое акционерное общество "Октопус" (RU) | METHOD FOR CONSTRUCTION OF DEEP WELL CONSTRUCTION CARBON SOLUTION FOR ITS IMPLEMENTATION AND DEEP WELL CONSTRUCTION |
| CN107965032A (en) * | 2017-12-28 | 2018-04-27 | 中国电建集团贵阳勘测设计研究院有限公司 | Ecological drainage ditch and construction method |
| CN209339169U (en) * | 2018-09-13 | 2019-09-03 | 中电建十一局工程有限公司 | A kind of precipitation well in foundation pit plugging device |
| CN211547782U (en) * | 2019-10-31 | 2020-09-22 | 山西四建集团有限公司 | Pipe well sealing device for high-pressure water head of sand layer deep foundation pit |
-
2022
- 2022-07-15 CN CN202210836069.2A patent/CN115233718B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2008126646A (en) * | 2008-06-30 | 2010-01-10 | Закрытое акционерное общество "Октопус" (RU) | METHOD FOR CONSTRUCTION OF DEEP WELL CONSTRUCTION CARBON SOLUTION FOR ITS IMPLEMENTATION AND DEEP WELL CONSTRUCTION |
| CN107965032A (en) * | 2017-12-28 | 2018-04-27 | 中国电建集团贵阳勘测设计研究院有限公司 | Ecological drainage ditch and construction method |
| CN209339169U (en) * | 2018-09-13 | 2019-09-03 | 中电建十一局工程有限公司 | A kind of precipitation well in foundation pit plugging device |
| CN211547782U (en) * | 2019-10-31 | 2020-09-22 | 山西四建集团有限公司 | Pipe well sealing device for high-pressure water head of sand layer deep foundation pit |
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| Publication number | Publication date |
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| CN115233718A (en) | 2022-10-25 |
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