CN110629778A - Construction method for stopping leakage of waterproof curtain - Google Patents
Construction method for stopping leakage of waterproof curtain Download PDFInfo
- Publication number
- CN110629778A CN110629778A CN201810640142.2A CN201810640142A CN110629778A CN 110629778 A CN110629778 A CN 110629778A CN 201810640142 A CN201810640142 A CN 201810640142A CN 110629778 A CN110629778 A CN 110629778A
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- Prior art keywords
- curtain
- pile
- water seepage
- water
- construction method
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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
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
Abstract
The invention discloses a waterproof curtain leakage stoppage construction method, which relates to a waterproof and anti-seepage method in the field of buildings, and the technical scheme is characterized by comprising the following steps: s1, checking the water leakage degree of the waterproof curtain pile in sections; s2, firstly piling brick walls to block sand and then pouring and constructing a pile interlayer to seal the water seepage points with small water seepage degree; s3, draining water by a water seepage pipe at a water seepage point with large water seepage degree, and pouring a concrete wall for sealing; and S4, continuing the foundation pit earthwork operation. The construction method for stopping the leakage of the waterproof curtain can adopt corresponding treatment measures to stop the leakage according to the leakage degree of the waterproof curtain, has good leakage stopping effect and reduces unnecessary waste.
Description
Technical Field
The invention relates to a waterproof and anti-permeability method in the field of buildings, in particular to a waterproof curtain leakage stoppage construction method.
Background
The method is characterized in that measures for draining underground water are required during construction of foundation pits below the underground water level, and when the aquifer is rich in water and difficult to dry, or precipitation possibly causes damage such as deformation of surrounding buildings, a curtain water stopping scheme is often adopted.
The waterproof curtain is used as a waterproof facility of the underground foundation pit and is a general name of a water-stopping series at the periphery of an engineering main body. Some foundation pits are not very deep, and the foundation pit enclosure of the foundation pit is divided into three parts: one part is a retaining pile part which mainly plays the role of a retaining wall, the form of the retaining pile part can be a reinforced concrete cast-in-place pile or other forms of piles, and a certain gap is reserved between every two piles, but the retaining pile part can retain soil; the second part is a waterproof curtain part which is used for solidifying the soil body behind the retaining wall, so that water outside the foundation pit cannot flow into the foundation pit, and the form of the waterproof curtain part can be cement soil mixing piles or compaction grouting; the three parts are supports. The common waterproof curtain is a high-pressure jet grouting pile waterproof curtain. If the bottom surface of the foundation pit is below the underground water level and precipitation is difficult, a waterproof curtain is basically required to be arranged to prevent the seepage of underground water.
As shown in fig. 1, the row pile support and the curtain piles in the existing foundation pit are sequentially staggered and arranged for water insulation, and the curtain piles adopt high-pressure jet grouting curtain piles; when appearing the infiltration in the foundation ditch work progress, gushing sand the phenomenon such as, generally behind the gushing sand point, the foundation ditch outside is mended and is beaten vertical high pressure jet grouting pile and strengthen the stagnant water effect promptly, however this kind of way has following weak point: along with foundation ditch earthwork excavation, groundwater just can appear the infiltration to foundation ditch lateral wall pressure increase when excavation to certain degree of depth of foundation ditch usually, gush sand the point, and this section groundwater is less to foundation ditch lateral wall pressure from the foundation ditch upper shed to infiltration point belongs to unnecessary stagnant water and strengthens the section, consequently mends vertical high stake of spouting in the foundation ditch outside and strengthens the stagnant water effect, can increase unnecessary cost.
Disclosure of Invention
The invention aims to provide a waterproof curtain leakage stopping construction method which can perform leakage stopping by adopting corresponding treatment measures according to the leakage water degree of a curtain, has a good leakage stopping effect and reduces unnecessary waste.
The above object of the present invention is achieved by the following technical solutions:
a waterproof curtain leakage stopping construction method comprises the following steps: s1, checking the water leakage degree of the waterproof curtain pile in sections; s2, firstly piling brick walls to block sand and then pouring and constructing a pile interlayer to seal the water seepage points with small water seepage degree; s3, draining water by a water seepage pipe at a water seepage point with large water seepage degree, and pouring a concrete wall for sealing; and S4, continuing the foundation pit earthwork operation.
By adopting the technical scheme, when the curtain pile seeps water in the excavation process of the foundation pit, the earthwork excavation in the foundation pit is immediately stopped, then the seepage water degree is checked in the partition section of the curtain pile, if the curtain pile has a cavity condition and the seepage water amount is small, the sand is blocked by building brick walls, and then the interlayer of the pile is poured for sealing and plugging; when the water seepage amount is large, a water seepage pipe is inserted into the water seepage point to drain water, so that the flow rate of water seepage and sand gushing is reduced, and the phenomenon that the added plugging objects are washed away instantly is avoided, so that the putting amount of concrete can be reduced when a concrete wall is poured, and the plugging effect on the water seepage point can be ensured. The water seepage conditions are distinguished, so that the leaking stoppage effect of different water seepage points is ensured, and unnecessary waste is reduced.
The invention is further configured to: and S2, the brick wall is piled up from bottom to top along the middle part of the curtain pile, three layers of woven bags are paved on the side wall of the brick wall facing the curtain pile while the brick wall is piled up, the woven bags are connected to the brick wall, and then dry cement powder is used for filling the space between the woven bags and the bricks.
By adopting the technical scheme, the three layers of woven bags are hung on the brick walls, and the woven bags stop sandy soil and are matched with the brick walls, so that the sandy soil is not lost outwards any more, and the plugging effect is improved; the stability of the brick wall is guaranteed by filling with dry cement powder.
The invention is further configured to: the inter-pile surface layer in the S2 comprises a phi 6.5@150 steel bar mesh, a phi 14@200 press mesh and a C20 concrete surface layer with the thickness of 100 mm; the reinforcing mesh is fixed on row pile supports on two sides of the curtain pile.
By adopting the technical scheme, the reinforcing mesh is fixed on the row pile support, then the concrete with the thickness of 100mm and the thickness of C20 is poured, and the concrete is solidified to form a pile interlayer surface layer, so that the water seepage points of the curtain piles are completely sealed, and the leakage stoppage is completed.
The invention is further configured to: and a water seepage pipe is arranged at the water seepage point of the curtain pile in the S2.
Through adopting above-mentioned technical scheme, the groundwater in the curtain stake outside is derived through the infiltration pipe, reduces groundwater to the pressure that the infiltration point was applyed to weaken the infiltration of infiltration point and the phenomenon of running sand, make the faster of fragment of brick wall piling smooth.
The invention is further configured to: s3, the water seepage pipe is inserted into the seepage point of the curtain pile to lead out water, then fine stones are used for laying 5-10cm around the water seepage pipe, then a template is erected along the periphery of the water seepage point of the curtain pile, then the ready-mixed concrete is filled between the template and the fine stones, and the concrete is solidified to form the partially closed concrete wall.
Through adopting above-mentioned technical scheme, derive the groundwater in the curtain stake outside with the infiltration pipe earlier, reduce groundwater and to the pressure that the infiltration point was applyed to weaken the infiltration of infiltration point and the sand drift phenomenon, the fine stone is fixed the infiltration pipe, pours behind the concrete and fine stone integrated into one piece, plays reinforced (rfd) effect, thereby makes concrete wall fixed more firm on the curtain stake, improves the effect of control curtain stake sand drift.
The invention is further configured to: and (3) cleaning the pile body soil supported by the row piles by using a steel wire brush before concrete pouring.
By adopting the technical scheme, the concrete and the row pile support are more tightly matched, and the formed stability is higher.
The invention is further configured to: the water seepage pipe is provided with a plurality of water seepage pipes.
Through adopting above-mentioned technical scheme, improve the displacement of infiltration pipe, the drainage effect is better.
In conclusion, the invention has the following beneficial effects:
1. for the water seepage points with smaller water seepage amount, the leakage stoppage is realized by firstly piling brick walls to resist sand and then pouring and building the interlayer seal of the pile, the leakage stoppage process is quick and convenient, and the leakage stoppage effect is good;
2. for the seepage points with larger seepage water amount, the leakage stoppage is realized by inserting the seepage pipe for drainage and pouring the concrete wall for sealing, the seepage pipe drainage weakens the seepage water and sand gushing speed of the seepage points, and avoids the added plugging objects from being washed away instantly, thereby reducing the putting amount of concrete and ensuring the leakage stoppage effect on the seepage points when the concrete wall is poured.
Drawings
FIG. 1 is a schematic view of a prior art row pile support in contact with a curtain pile;
FIG. 2 is a schematic view of a leak stopping structure of a water seepage point with a small amount of water seepage in the embodiment;
fig. 3 is a schematic view of the leak stopping structure of the water seepage point with larger water seepage amount in the embodiment.
In the figure, 1, row pile supporting; 2. a curtain pile; 3. a brick wall; 4. woven bags; 5. pile interlayer surface layer; 51. reinforcing mesh sheets; 52. a concrete surface layer; 6. a water seepage pipe; 7. concrete wall.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): the invention relates to a water-stop curtain leakage stopping construction method, which mainly aims to check the leakage degree of water in sections in the process of foundation pit excavation and adopt corresponding treatment measures to stop leakage instead of driving a high-pressure jet grouting pile to stop leakage all the time at a water leakage point. The specific implementation mode is as follows:
and (3) providing an excavator for synchronous operation on the foundation pit excavation site, immediately stopping the earthwork excavation in the foundation pit when the curtain pile 2 seeps water in the excavation process, and then checking the seepage water degree of the curtain pile 2 in sections.
As shown in fig. 2, when the curtain pile 2 has a cavity and a small water seepage amount, the following steps are adopted; firstly, a layer of brick wall 3 is piled up from bottom to top along the middle part of a curtain pile 2, three layers of woven bags 4 are paved on the side wall of the brick wall 3 facing the curtain pile 2 while the brick wall 3 is piled up, when the brick wall 3 can completely cover a cavity or a water seepage point, the corner of the woven bag 4 is hung on the brick wall 3, and then dry cement powder is used for filling the space between the woven bag 4 and the brick wall 3, so that sandy soil is not lost outwards any more; and finally, pouring a pile interlayer 5 on one side of the brick wall 3 back to the curtain pile 2 for sealing.
The method for preparing the pile interlayer 5 comprises the following steps: weaving phi 6.5@150 x 150 steel bar net sheets 51, welding and fixing the steel bar net sheets 51 by adopting mesh pressing bars with the phi 14@200, then fixing the steel bar net sheets 51 on row pile supports 1 at two sides of a curtain pile 2, finally spraying a C20 concrete surface layer 52 with the thickness of 100mm, and realizing sealing after the concrete is solidified.
When the brick wall 3 is piled up, if the continuous water seepage of the curtain piles 2 affects the piling operation, a proper amount of water seepage pipes 6 can be added at the seepage points to lead out water (not shown in the figure, refer to fig. 3), so that the water seepage and sand running phenomena of the seepage points are weakened, and the brick wall 3 is piled up more quickly and smoothly; the brick wall 3 is adaptively abducted to the water seepage pipe 6.
As shown in figure 3, when the point leakage of the curtain pile 2 is large, firstly, a proper amount of water seepage pipe 6 is inserted into the leakage point of the curtain pile 2 to guide out water, then, fine stones are horizontally laid for 5-10cm at the periphery of the end part of the curtain pile 2 inserted into the water seepage pipe 6, then, a steel wire brush is used for cleaning soil of a pile body of the row pile support 1, after the cleaning is finished, a template is erected along the periphery of the water seepage point of the curtain pile 2, then, pre-mixed concrete is filled between the template and the fine stones, and after the concrete is solidified, a partially closed concrete wall 7 is formed, so that the aim of controlling the quicksand of the curtain pile 2 is fulfilled.
And (5) continuing digging earthwork in the foundation pit after the water seepage point plugging is finished.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (8)
1. A waterproof curtain leakage stopping construction method is characterized in that: the method comprises the following steps:
s1, checking the water leakage degree of the curtain pile (2) with water leakage in a sectional manner;
s2, firstly piling brick walls (3) to block sand and then pouring pile interlayer (5) to seal water seepage points with small water seepage degree;
s3, inserting a water seepage pipe (6) at a water seepage point with large water seepage degree for drainage, and pouring a concrete wall (7) for sealing;
and S4, continuing the foundation pit earthwork operation after completing plugging.
2. The waterproof curtain plugging construction method according to claim 1, characterized in that: in the S2, the brick wall (3) is piled up from bottom to top along the middle of the curtain pile (2), three layers of woven bags (4) are paved on the side wall, facing the curtain pile (2), of the brick wall (3) when the brick wall (3) is piled up, the woven bags (4) are connected to the brick wall (3), and then dry cement powder is used for filling the space between the woven bags (4) and the brick wall (3).
3. The waterproof curtain plugging construction method according to claim 1, characterized in that: the inter-pile surface layer (5) in the S2 comprises phi 6.5@150 x 150 steel mesh sheets (51), phi 14@200 press mesh bars and a C20 concrete surface layer (52) with the thickness of 100 mm.
4. The waterproof curtain plugging construction method according to claim 3, characterized in that: and the steel bar net sheets (51) are fixed on row pile supports (1) on two sides of the curtain piles (2).
5. The waterproof curtain plugging construction method according to claim 1, characterized in that: and in the S2, a water seepage pipe (6) is arranged at the water seepage point of the curtain pile (2).
6. The waterproof curtain plugging construction method according to claim 1, characterized in that: s3, a water seepage pipe (6) is inserted into a seepage point of a curtain pile (2) to lead out water, fine stones are used for flatly paving 5-10cm around the water seepage pipe (6), then a template is erected along the periphery of the seepage point of the curtain pile (2), premixed concrete is filled between the template and the fine stones, and after the concrete is solidified, a partially closed concrete wall (7) is formed.
7. The waterproof curtain plugging construction method according to claim 5, characterized in that: and (3) cleaning the pile body soil of the row pile support (1) by using a steel wire brush before concrete pouring.
8. The waterproof curtain plugging construction method according to claim 5, characterized in that: the water seepage pipe (6) is provided with a plurality of water seepage pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810640142.2A CN110629778A (en) | 2018-06-21 | 2018-06-21 | Construction method for stopping leakage of waterproof curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810640142.2A CN110629778A (en) | 2018-06-21 | 2018-06-21 | Construction method for stopping leakage of waterproof curtain |
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| CN110629778A true CN110629778A (en) | 2019-12-31 |
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| CN201810640142.2A Pending CN110629778A (en) | 2018-06-21 | 2018-06-21 | Construction method for stopping leakage of waterproof curtain |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045851A (en) * | 2021-11-23 | 2022-02-15 | 湖北武桥岩土工程有限公司 | Construction method of high-pressure jet grouting pile waterproof curtain |
Citations (4)
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| JPH09242089A (en) * | 1996-03-12 | 1997-09-16 | Fujita Corp | Underground outer wall using earth retaining wall |
| CN106592514A (en) * | 2016-12-09 | 2017-04-26 | 济南市市政工程有限公司 | Construction method of old city riverway piling wall integrated vertical type retaining wall |
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2018
- 2018-06-21 CN CN201810640142.2A patent/CN110629778A/en active Pending
Patent Citations (4)
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|---|---|---|---|---|
| JPH09242089A (en) * | 1996-03-12 | 1997-09-16 | Fujita Corp | Underground outer wall using earth retaining wall |
| CN106759297A (en) * | 2016-11-22 | 2017-05-31 | 广州中煤江南基础工程公司 | A kind of construction method of support pile and three pipe high-pressure rotary jet grouting pile deep basal pits |
| CN106592514A (en) * | 2016-12-09 | 2017-04-26 | 济南市市政工程有限公司 | Construction method of old city riverway piling wall integrated vertical type retaining wall |
| CN107700474A (en) * | 2017-10-27 | 2018-02-16 | 西安建筑科技大学 | A kind of existing construction foundation reinforcement means and campshed formula diaphram wall |
Non-Patent Citations (2)
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| 张树人等: "《建筑工程质量事故及施工质量通病实用防治技术》", 30 June 2011, 中国科学技术出版社 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045851A (en) * | 2021-11-23 | 2022-02-15 | 湖北武桥岩土工程有限公司 | Construction method of high-pressure jet grouting pile waterproof curtain |
| CN114045851B (en) * | 2021-11-23 | 2023-01-24 | 湖北武桥岩土工程有限公司 | Construction method of high-pressure jet grouting pile waterproof curtain |
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Application publication date: 20191231 |