CN111088811A - Construction method of plastic steel plate pile core wall earth-rock high-seepage-prevention water-retaining cofferdam - Google Patents
Construction method of plastic steel plate pile core wall earth-rock high-seepage-prevention water-retaining cofferdam Download PDFInfo
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- CN111088811A CN111088811A CN202010013012.3A CN202010013012A CN111088811A CN 111088811 A CN111088811 A CN 111088811A CN 202010013012 A CN202010013012 A CN 202010013012A CN 111088811 A CN111088811 A CN 111088811A
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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
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2450/00—Gaskets
- E02D2450/10—Membranes
- E02D2450/105—Membranes impermeable
- E02D2450/106—Membranes impermeable for liquids
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Abstract
A construction method of a plastic steel plate pile core wall earth-rock high-seepage-prevention water retaining cofferdam is characterized in that a plastic steel combined plate pile is combined with an earth-rock cofferdam in a construction way, and a high-strength plastic steel combined plate pile core wall seepage-prevention earth-rock cofferdam is constructed; the cofferdam body (2) is of a trapezoidal platform structure, a plastic steel plate pile core wall formed by cutting and connecting at least two plastic steel plate piles (1) is vertically installed in the middle of the lower side of the cofferdam body (2), a geomembrane (3) is horizontally paved on the surface of the upstream face (A) from the top of the plastic steel plate pile core wall, the whole body is paved on the top face of the cofferdam body (2) in a turning-up mode along the slope of the upstream face (A), bagged clay (4) is paved on the surface of the slope of the upstream face (A), and block stones (5) are paved on the upper side of the geomembrane (3) on the top face of the cofferdam body (2); the two opposite side edges of the plastic steel sheet pile (1) are provided with mutually matched clamping cutting locking structures; the anti-seepage performance is high, the stability is strong, the engineering quantity of the high-pressure jet anti-seepage wall is reduced, and the plastic steel sheet pile can be recycled after the cofferdam is removed; the construction difficulty is reduced, the construction period is shortened, and the engineering investment is saved; is particularly suitable for the water retaining cofferdam engineering with high seepage-proofing performance requirement.
Description
Technical Field
The invention relates to a water conservancy project water retaining cofferdam structure, belongs to the cofferdam construction technology for E02D19/04 water conservancy project in IPC classification, and particularly relates to a construction method of a plastic steel plate pile core wall earth-rock high-seepage-proofing water retaining cofferdam.
Background
The earth-rock cofferdam is mainly formed by filling a large amount of earth and rock, is mainly used as a transverse cofferdam at the upstream and the downstream of a river or a river, can embody the construction characteristics of hydraulic and hydroelectric engineering, is prepared from local materials, has strong adaptability to foundation pit foundation under any geological conditions, and is simple in field construction process. The construction of the earth-rock cofferdam is not high in the requirement of the geological condition of a common construction site, short in construction period, simple in construction method and greatly saves the cost of engineering investment. But the problems of stability and seepage prevention of the earth-rock cofferdam are particularly important.
According to the technical specifications and requirements of foundation treatment in the water conservancy and hydropower building engineering industry. A method for the anti-seepage treatment of the earth-rock cofferdam comprises the following steps: the construction technology methods of the impervious wall method, the high-pressure rotary spraying cement grouting, the anti-seepage curtain grouting, the water plugging grouting, the paste grouting and the like. The impervious wall method relates to the structures of a soil core wall and an inclined wall, a concrete core wall and an inclined wall, an asphalt concrete core wall and other impervious core walls and the like.
The Chinese patent application 201520600055.6 proposed by the research institute of Guiyang survey of China Electricity-construction group Limited provides a structure of an earth-rock cofferdam anti-seepage system, which comprises a weir body, wherein the upstream surface of the weir body is provided with a large stone cast-fill slope protection, dry masonry stones are arranged on the large stone cast-fill slope protection, and the backside surface of the dry masonry stones is provided with slope protection transition materials; the middle part of the weir body is provided with a composite geomembrane which is arranged along the length direction of the weir body, the bottom of the composite geomembrane is provided with a clay water intercepting groove, the bottom edge of the composite geomembrane is connected with the clay water intercepting groove through cushion layer concrete, the top edge of the composite geomembrane is connected with the top surface of the weir body in a sealing way through surface layer concrete, and the two ends of the composite geomembrane are embedded into bank slope concrete. The invention aims to meet the requirement of diversion in the construction of small and medium-sized water conservancy and hydropower engineering by arranging the composite geomembrane in the earth-rock cofferdam and arranging the clay water intercepting tank on the weir base to form an anti-seepage system.
Chinese patent application 201320122981.8 that chinese hydropower advisor group chengdu surveyed the design institute and proposed, the connection structure of high earth-rock cofferdam impervious soil material and concrete impervious wall, including the cofferdam embankment body, the internal vertical basic concrete impervious wall that is provided with of cofferdam embankment, the top of cofferdam embankment body is provided with anti-precoat around basic concrete impervious wall, the top on anti-precoat is provided with the soil material barrier around basic concrete impervious wall, be provided with the geomembrane between soil material barrier and the anti-precoat, the one end of geomembrane links to each other with basic concrete impervious wall through the bolt, the soil material barrier includes the outer body of impervious soil material to and set up the high plasticity clay endosome between the outer body of impervious soil material and basic concrete impervious wall.
At present, although the construction process of the existing earth-rock cofferdam is mature day by day, a large amount of manpower and financial resources are required to be invested in the anti-seepage treatment, the construction time and the cost are obviously increased, and the construction progress and the cost are greatly influenced.
Disclosure of Invention
The invention aims to provide a construction method of a plastic steel plate pile core wall earth-rock high-seepage-prevention water retaining cofferdam, which reduces the construction difficulty, shortens the construction period, is convenient and fast to construct, saves the engineering investment, and has high seepage-prevention performance and stability.
The aim of the invention is achieved by the following technical measures: combining the plastic steel composite sheet pile with the construction of the earth-rock cofferdam, and constructing the high-strength plastic steel composite sheet pile core wall anti-seepage earth-rock cofferdam; the plastic steel sheet pile core wall earth and stone seepage prevention cofferdam includes: plastic steel sheet piles, cofferdams, geomembranes, bagged clay and blockstones. The cofferdam body is of a trapezoidal platform structure, the two sides of the cofferdam body are respectively a water-facing surface slope and a water-back surface slope, the middle part of the lower side of the cofferdam body is vertically provided with a plastic steel sheet pile core wall formed by cutting and connecting at least two plastic steel sheet piles, the geomembrane is horizontally paved on the water-facing surface from the top of the plastic steel sheet pile core wall, the whole body is paved on the water-facing surface slope in an upward turning way to the top surface of the cofferdam body in a full pavement, the geomembrane is combined with the plastic steel sheet piles to form a closed seepage-proof body, bagged clay is paved on the surface of the water-facing surface slope, and; wherein, the two opposite side edges of the plastic steel sheet pile 1 are provided with mutually matched clamping cutting locking structures; the construction method comprises the following steps:
the method comprises the following steps: arranging a plastic steel sheet pile construction guide device, and driving plastic steel sheet piles by adopting a single-pile one-by-one driving method to complete the construction of the integral structure of the plastic steel sheet pile core wall;
step two: filling a cofferdam body to reach the pile top elevation, paving a geomembrane, and overlapping the geomembrane with the plastic steel sheet pile;
step three: continuously filling the cofferdam body to the elevation of the weir crest;
step four: and paving bagged clay along the upstream face, and paving lump stones along the top of the weir.
Particularly, the construction method comprises the following concrete construction steps:
1) measuring and lofting: the plastic steel sheet pile impervious core wall and the soil-rock cofferdam toe line measurement lofting is carried out, and the plastic steel sheet pile 1 is inserted and positioned;
2) excavating a guide groove: excavating and trimming a guide groove of the impervious core wall of the plastic steel sheet pile;
3) and (3) constructing a plastic steel sheet pile: the pile driver lifts the plastic steel sheet piles, the plastic steel sheet piles are manually righted in place, adjacent plastic steel sheet piles are connected in a cutting mode through the C-shaped clamping grooves and the T-shaped connectors to form the impervious core wall, the impervious core wall is buckled and driven to a designed elevation, and single pile is continuously driven;
4) filling a cofferdam: filling a cofferdam body to the pile top elevation of the plastic steel plate and then compacting;
5) the geomembrane and the plastic steel sheet pile are lapped: wrapping the top of the impervious core wall connected with the plastic steel sheet pile by using an impervious film, laying a geomembrane along the top, overlapping the geomembrane at the junction of the geomembrane and the impervious core wall by 1.0m, and filling and compacting;
6) and (4) continuously filling: continuously filling the cofferdam body to a design elevation and then compacting;
7) and (3) laying of the geomembrane: and (4) continuously laying a geomembrane along the side slope of the upstream face and the weir crest, and connecting the geomembrane with the plastic steel sheet pile in a lap joint manner to form a closed seepage-proof body.
8) Compacting the geomembrane: the geomembrane is pressed on the surface of the cofferdam body through bagged clay and rock blocks.
Particularly, two ends of each plastic steel sheet pile are respectively provided with a C-shaped clamping groove and a T-shaped connector, and two adjacent plastic steel sheet piles are connected in a cutting mode through the C-shaped clamping grooves and the T-shaped connectors which are matched with each other at the edges of the two opposite ends.
In particular, the middle part of the plastic steel sheet pile is provided with a groove-shaped or corrugated folded surface structure.
Particularly, the geomembrane is lapped by 1.0m on the upstream side of the top of the plastic steel sheet pile.
In particular, the pile top of the plastic steel sheet pile is wrapped by an impermeable film.
Particularly, the edges of two ends of the plastic steel sheet pile are respectively of the same C-shaped clamping groove structure which can be mutually meshed.
Particularly, the width of the top of the cofferdam body is 1-2 m, the upstream side slope is 1: 2-1: 3, and the back side slope is 1: 1-1: 1.5 generally; the bagged clay and rock block have a thickness of 20-30 cm.
The invention has the advantages and effects that: the anti-seepage performance is high, the stability is strong, meanwhile, the engineering quantity of the high-pressure jet anti-seepage wall is reduced, the construction is convenient, and the construction period is shortened; after the cofferdam is removed, the plastic steel sheet pile can be recycled; compared with the traditional seepage-proofing mode, the construction difficulty is reduced, the time and the cost are saved, and the engineering investment is saved; the method is particularly suitable for water-retaining cofferdam engineering with high seepage-proofing performance requirement and has wide application prospect.
Drawings
FIG. 1 is a schematic vertical sectional view of an earth-rock cofferdam made of a plastic steel sheet pile core wall according to an embodiment of the invention.
FIG. 2 is a sectional view of a plastic steel sheet pile according to an embodiment of the present invention.
The reference numerals include:
1-plastic steel sheet pile, 2-cofferdam, 3-geomembrane, 4-bagged clay, 5-rock block, 11-C-shaped clamping groove and 12-T-shaped connector; a-upstream surface and B-downstream surface.
Detailed Description
The invention has the principle that the invention makes up for the deficiencies of the prior art, re-develops and designs, innovatively constructs a construction process according to a new design thought, combines the construction of the plastic steel combined sheet pile and the earth-rock cofferdam, obtains high anti-permeability performance by constructing the high-strength plastic steel combined sheet pile core wall anti-seepage earth-rock cofferdam, and saves construction time and cost.
In the invention, as shown in the attached figure 1, the impermeable earth-rock cofferdam of the plastic steel plate pile core wall comprises: the steel reinforced plastic plate pile cofferdam comprises a steel reinforced plastic plate pile 1, a cofferdam body 2, a geomembrane 3, bagged clay 4 and block stones 5. The cofferdam body 2 is of a trapezoidal platform structure, the two sides of the cofferdam body 2 are respectively a water-facing surface A and a water-backing surface B slope, the middle part of the lower side of the cofferdam body 2 is vertically provided with a plastic steel sheet pile core wall formed by cutting and connecting at least two plastic steel sheet piles 1, the geomembrane 3 is horizontally paved on the surface of the water-facing surface A from the top of the plastic steel sheet pile core wall, the whole body is paved on the top surface of the cofferdam body 2 in an upward turning way along the slope of the water-facing surface A, the geomembrane 3 is combined with the plastic steel sheet piles 1 to form a closed seepage-proof body, the surface of the slope of the water-facing surface A is paved with bagged clay 4, and the; wherein, the relative both sides border of plastic steel sheet pile 1 has the joint cuttage locking structure of mutually supporting.
The construction method comprises the following steps:
the method comprises the following steps: arranging a construction guide device of the plastic steel sheet pile 1, and driving the plastic steel sheet pile 1 by adopting a single-pile one-by-one driving method to complete the construction of the integral structure of the plastic steel sheet pile core wall;
step two: filling the cofferdam body 2 to the pile top elevation, laying a geomembrane 3, and lapping with the plastic steel sheet pile 1;
step three: continuously filling the cofferdam body 2 to the elevation of the weir crest;
step four: and paving bagged clay 4 along the upstream surface A, and paving blockstones 5 along the weir crest.
The invention is further illustrated by the following examples and figures.
Example (b): as shown in the attached figures 1 and 2, the concrete construction steps are as follows:
1) measuring and lofting: the plastic steel sheet pile impervious core wall and the soil-rock cofferdam toe line measurement lofting is carried out, and the plastic steel sheet pile 1 is inserted and positioned;
2) excavating a guide groove: excavating and finishing a guide groove of the impervious core wall of the plastic steel sheet pile 1;
3) and (3) constructing a plastic steel plate pile 1: the pile driver lifts the plastic steel sheet piles 1, the plastic steel sheet piles are manually righted in place, the adjacent plastic steel sheet piles 1 are connected in a cutting mode through the C-shaped clamping grooves 11 and the T-shaped connectors 12 to form an anti-seepage core wall, the anti-seepage core wall is buckled and driven to a designed elevation, and single pile is driven continuously;
4) filling a cofferdam: filling the cofferdam body 2 to the top elevation of the plastic steel sheet pile 1 and then compacting;
5) the geomembrane 3 is lapped with the plastic steel sheet pile 1: the top of the impervious core wall connected with the plastic steel sheet pile 1 is wrapped by an impervious film, a geomembrane 3 is laid along the top, the joint with the impervious core wall is lapped by 1.0m, and the soil is filled and compacted;
6) and (4) continuously filling: continuously filling the cofferdam body 2 to a design elevation and then compacting;
7) laying the geomembrane 3: and continuously laying the geomembrane 3 along the slope A of the upstream face and the weir crest, and connecting the geomembrane 3 with the plastic steel sheet pile 1 in a lap joint manner to form a closed anti-seepage body.
8) Compacting the geomembrane 3: the geomembrane 3 is pressed on the surface of the cofferdam 2 through the bagged clay 4 and the blocky stones 5.
In the foregoing, two ends of each plastic steel sheet pile 1 are respectively provided with a C-shaped clamping groove 11 and a T-shaped connector 12, and two adjacent plastic steel sheet piles 1 are connected in a cutting manner through the C-shaped clamping grooves 11 and the T-shaped connectors 12, which are matched with each other at the edges of the two opposite ends, so as to ensure the sealing connection of the joint parts.
In the above, the middle part of the plastic steel sheet pile 1 has a groove-shaped or corrugated folded surface structure.
In the above, the geomembrane 3 is laid along the slope of the upstream face A and the weir top of the cofferdam body 2, and the bottom of the geomembrane 3 is lapped with the plastic steel sheet pile anti-seepage core wall for 1.0m to form a closed anti-seepage body.
In the foregoing, the pile top of the plastic steel sheet pile 1 is wrapped with the impermeable membrane, so as to prevent the plastic steel sheet pile 1 from puncturing the geomembrane 3.
In the foregoing, the geomembrane 3 is pressed on the surface of the cofferdam 2 through the bagged clay 4 and the blocky stones 5.
In the embodiment of the invention, as an alternative scheme, the edges of two ends of the plastic steel sheet pile 1 are respectively of the same C-shaped clamping groove structure which can be mutually occluded.
In the embodiment of the invention, the width of the top of the steel-plastic plate pile core wall impermeable earth-rock cofferdam is 1-2 m, the slope of the upstream surface A is 1: 2-1: 3, and the slope of the downstream surface B is generally 1: 1-1: 1.5. The bagged clay 4 and the bagged rock lumps 5 are 20-30cm thick.
In the embodiment of the invention, the type 1 and the insertion depth of the plastic steel sheet pile are determined according to the soil condition and the design requirement on site. The plastic steel sheet piles 1 are high-strength plastic steel U-shaped combined sheet piles, more than two plastic steel sheet piles 1 are connected in a matched mode through the C-shaped clamping grooves 11 and the T-shaped connectors 12, and sealing connection of joint portions can be effectively guaranteed through mechanical meshing. The cofferdam body 2 is made of cohesive soil or sand soil, is tamped after being filled out of the water surface, and is constructed mechanically, and the degree of compaction is determined according to the cofferdam grade according to the standard.
In the embodiment of the invention, the insertion accuracy of the plastic steel sheet pile 1 is improved by utilizing the construction guide frame, and the vertical insertion of the plastic steel sheet pile 1 is ensured. The geomembrane 3 is lapped by 1.0m on the side A of the upstream face at the top of the plastic steel sheet pile 1, so that the seepage-proofing performance of the earth-rock cofferdam is greatly improved.
In the embodiment of the invention, the filling requirement of the cofferdam body 2, the specific process requirement of the construction of the plastic steel sheet pile 1, the laying requirement of the geomembrane 3 and the like are carried out according to the general technical standard.
Claims (8)
1. The construction method of the plastic steel plate pile core wall earth-rock high-seepage-proofing water retaining cofferdam is characterized in that a plastic steel combined plate pile is combined with the construction of the earth-rock cofferdam, and the high-strength plastic steel combined plate pile core wall seepage-proofing earth-rock cofferdam is constructed; the plastic steel sheet pile core wall earth and stone seepage prevention cofferdam includes: the soil-working cofferdam comprises a plastic steel sheet pile (1), a cofferdam body (2), a geomembrane (3), bagged clay (4) and rock blocks (5); the cofferdam body (2) is of a trapezoidal platform structure, the two sides of the cofferdam body (2) are respectively a water facing surface (A) and a water backing surface (B) slope, the middle part of the lower side of the cofferdam body (2) is vertically provided with a plastic steel sheet pile core wall formed by splicing and connecting at least two plastic steel sheet piles (1), a geomembrane (3) is horizontally paved on the surface of the water facing surface (A) from the top of the plastic steel sheet pile core wall, the whole body is turned upwards along the water facing surface (A) slope to be paved on the top surface of the cofferdam body (2) fully, the geomembrane (3) and the plastic steel sheet piles (1) are combined to form a closed seepage-proof body, clay (4) is paved on the surface of the water facing surface (A), and pressing stones (5) are paved on the geomembrane (3) on the top surface; wherein, the two opposite side edges of the plastic steel sheet pile (1) are provided with mutually matched clamping, cutting and locking structures; the construction method comprises the following steps:
the method comprises the following steps: arranging a construction guide device of the plastic steel sheet pile (1), and driving the plastic steel sheet pile (1) by adopting a single-pile one-by-one driving method to finish the construction of the integral structure of the plastic steel sheet pile core wall;
step two: filling the cofferdam body (2) to the pile top elevation, laying a geomembrane (3), and lapping with the plastic steel sheet pile (1);
step three: continuously filling the cofferdam body (2) to the elevation of the weir crest;
step four: and paving bagged clay (4) along the upstream surface (A), and paving blockstones (5) along the weir crest.
2. The construction method of the plastic steel plate pile core wall earth-rock high-seepage-proofing water-retaining cofferdam as recited in claim 1, characterized in that the construction method comprises the following concrete construction steps:
1) measuring and lofting: the plastic steel sheet pile impervious core wall and the earth-rock cofferdam toe line measurement lofting is carried out, and the plastic steel sheet pile (1) is inserted and positioned;
2) excavating a guide groove: excavating and finishing a guide groove of an impervious core wall of the plastic steel sheet pile (1);
3) the construction of the plastic steel sheet pile (1): the pile driver lifts the plastic steel sheet piles (1), the plastic steel sheet piles are manually righted in place, adjacent plastic steel sheet piles (1) are connected in a cutting mode through the C-shaped clamping grooves (11) and the T-shaped connectors (12) to form an anti-seepage core wall, buckling and driving are carried out until the designed elevation is achieved, and single pile is continuously driven;
4) filling a cofferdam: filling the cofferdam body (2) to the top elevation of the plastic steel sheet pile (1) and then compacting;
5) the geomembrane (3) is lapped with the plastic steel sheet pile (1): the top of the impervious core wall connected with the plastic steel sheet pile (1) is wrapped by an impervious film, a geomembrane (3) is laid along the top, the joint with the impervious core wall is overlapped for 1.0m, and soil is filled and compacted;
6) and (4) continuously filling: continuously filling the cofferdam body (2) to a design elevation and then compacting;
7) laying the geomembrane 3: continuously laying a geomembrane (3) along the side slope of the upstream face (A) and the weir crest, and connecting the geomembrane (3) with the plastic steel sheet pile (1) in a lap joint manner to form a closed anti-seepage body;
8) compacting the geomembrane (3): the geomembrane 3 is pressed on the surface of the cofferdam body (2) through bagged clay (4) and blockstones (5).
3. The construction method of the plastic steel sheet pile core wall earth-rock high-seepage-proofing water-retaining cofferdam of claim 1, wherein two ends of the plastic steel sheet pile (1) are respectively provided with the C-shaped clamping groove (11) and the T-shaped connector (12), and two adjacent plastic steel sheet piles (1) are connected in a cutting way through the C-shaped clamping groove (11) and the T-shaped connector (12) which are matched with each other at the edges of the two opposite ends.
4. The construction method of the plastic steel sheet pile core wall earth-rock high seepage prevention water retaining cofferdam of claim 1, characterized in that the middle part of the plastic steel sheet pile (1) is provided with a groove-shaped or corrugated folded surface structure.
5. The construction method of the plastic steel sheet pile core wall earth-rock high-seepage-proofing water-retaining cofferdam as defined by claim 1, wherein the geomembrane (3) is lapped with 1.0m on the side of the top of the plastic steel sheet pile (1) facing the water surface (A).
6. The construction method of the plastic steel sheet pile core wall earth-rock high-seepage-proofing water-retaining cofferdam of claim 1, characterized in that the pile top of the plastic steel sheet pile (1) is wrapped with an seepage-proofing film.
7. The construction method of the plastic steel sheet pile core wall earth-rock high-seepage-proofing water-retaining cofferdam of claim 1, wherein the edges of both ends of the plastic steel sheet pile (1) are respectively the same C-shaped clamping groove structure mutually engaged.
8. The construction method of the plastic steel sheet pile core earth-rock high-seepage-proofing water retaining cofferdam of claim 1, wherein the top width of the cofferdam body (2) is 1-2 m, the slope of the upstream surface (A) is 1: 2-1: 3, and the slope of the downstream surface (B) is 1: 1-1: 1.5; the bagged clay (4) and the block stone (5) have the thickness of 20-30 cm.
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| CN202010013012.3A CN111088811A (en) | 2020-01-06 | 2020-01-06 | Construction method of plastic steel plate pile core wall earth-rock high-seepage-prevention water-retaining cofferdam |
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| CN202010013012.3A CN111088811A (en) | 2020-01-06 | 2020-01-06 | Construction method of plastic steel plate pile core wall earth-rock high-seepage-prevention water-retaining cofferdam |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112482412A (en) * | 2020-12-24 | 2021-03-12 | 云南建投中航建设有限公司 | High-strength plastic steel sheet pile and construction method thereof |
| CN113266028A (en) * | 2021-05-17 | 2021-08-17 | 中电建十一局工程有限公司 | Construction method of sea area beach section highway riprap cofferdam seepage prevention system |
| CN115341561A (en) * | 2022-08-23 | 2022-11-15 | 深圳市市政工程总公司 | Water area cofferdam construction method |
-
2020
- 2020-01-06 CN CN202010013012.3A patent/CN111088811A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112482412A (en) * | 2020-12-24 | 2021-03-12 | 云南建投中航建设有限公司 | High-strength plastic steel sheet pile and construction method thereof |
| CN113266028A (en) * | 2021-05-17 | 2021-08-17 | 中电建十一局工程有限公司 | Construction method of sea area beach section highway riprap cofferdam seepage prevention system |
| CN115341561A (en) * | 2022-08-23 | 2022-11-15 | 深圳市市政工程总公司 | Water area cofferdam construction method |
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