CN106948354B - A kind of power station impervious wall construction method - Google Patents
A kind of power station impervious wall construction method Download PDFInfo
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- CN106948354B CN106948354B CN201710271223.5A CN201710271223A CN106948354B CN 106948354 B CN106948354 B CN 106948354B CN 201710271223 A CN201710271223 A CN 201710271223A CN 106948354 B CN106948354 B CN 106948354B
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/182—Bulkheads or similar walls made solely of concrete in situ using formworks to separate sections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a kind of power station impervious wall construction methods, including the phase slot section construction and the second stage of slot section construction successively carried out on the wall base；One phase slot section and the second stage of slot section are staggered；Each slot section is divided into two sides main aperture and intermediate secondary orifices totally three single holes, to guarantee to grab intermediate secondary orifices after first grabbing two sides main aperture in the construction of slot pass；Hole grabs after the completion casting concrete wall again.The difficulty that construction can be reduced using this method, is shortened the construction period, and the waste of man power and material is avoided.
Description
Technical field
The present invention relates to the construction methods of hydraulic engineering, and in particular to a kind of power station impervious wall construction method.
Background technique
Currently, the cut-pff wall in highlands has following construction Difficulties:
1, some power station impervious wall construction work surface height above sea levels are about 3069m, belong to high altitude localities, construction machinery
It can be reduced with construction personnel's construction efficiency.
2, in these highlands, Landslide deposit block crushed stone soil layer, sand gravel stratum contain boulder, erratic boulder；Longkou of shutting off is wide
33.3m, the big boulder of Longkou throwing and block stone are more when shutting off, and will restrict the quick trenching construction of cut-pff wall, while slot degree of safety
It reduces, forms security risk.
3, when Hydropower Station Construction, upstream cofferdam is backfilled using sand material, permeable serious, especially in Longkou fragment position, is held one's breath
Ineffective, there are big seepage channels, increase grooving difficulty, jeopardize equipment and weir body safety.
4, some highlands belong to nature reserve area, and ecological environment is good around construction area, and when impervious wall construction will use
A large amount of mud can seriously pollute surrounding enviroment, therefore this engineering is very high to environmental requirement if processing is bad.
Summary of the invention
In order to overcome the shortcomings of impervious wall construction in the prior art, it is an object of the invention to propose a kind of power station antiseepage
Wall construction method can reduce the difficulty of construction using this method, shorten the construction period, and avoid the waste of man power and material.
To realize the above-mentioned technical purpose, the present invention is realised by adopting the following technical scheme.
A kind of power station impervious wall construction method, cut-pff wall are arranged on the wall base in power station, and the wall base is power station
Interior soft base, cofferdam or dam, this method include the phase slot section construction successively carried out on the wall base and the second stage of slot section construction；
The one phase slot section and the second stage of slot section are staggered；The one phase slot section construction is specifically includes the following steps: step 1, is used
Grab bucket grabs one phase of side main aperture on the wall base；Step 2 grabs one phase of other side main aperture with grab bucket on the wall base；Step 3 is used
Grab bucket forms a phase slot after grabbing one interim secondary orifices on the wall base；Step 4, a phase gas lift reverse circulation borehole cleaning；Step 5, under
If a phase junction block and a phase pour conduit；Step 6, casting concrete wall；Step 7 rises after concrete initial set and pulls out described one
Phase junction block；Step 8, the phase junction block form nipple orifice after pulling out, repeat above step 1-8 until all phase slot sections
Construction is completed；It constructs between an adjacent phase slot section after the completion of the construction of one phase slot section the second stage of slot section；The second phase slot section
Construction grabs two sides second phase master on the wall base between an adjacent phase slot section with grab bucket specifically includes the following steps: step 1
Hole；Step 2 forms the second stage of slot after crawl second phase intermediate secondary orifices on the wall base between an adjacent phase slot section with grab bucket；3rd
Step, the second stage of gas lift reverse circulation borehole cleaning；Step 4, dividing into the second phase pours conduit；Step 5, casting concrete wall；Step 6, at wall.
Preferably, during crawl, when meeting boulder, using slot internal drilling explosion, slot cohesive energy explosion or again
Chisel rushes hit any method processing.
Preferably, the phase gas lift reverse circulation borehole cleaning or the second stage of gas lift reverse circulation borehole cleaning are specifically: a phase slot or
After the hole shape acceptance(check) of person's second phase slot, first one phase slot or the second stage of slot bottom sandy gravel are caught with grab bucket, then adopts
With gas lift method borehole cleaning.
Preferably, when the second stage of slot section borehole cleaning, with the concrete hole wall of steel wire brush scrub nipple orifice.
A phase junction block of dividing into is specifically: lifting by crane a phase junction block using crane, first lifts by crane the bottom of a phase junction block
At section, alignment carries out rising for a phase junction block and pulls out.
Preferably, the phase pours conduit or the second phase pours conduit using the steel pipe of the Φ 250 of quick screwed connection.
Preferably, the phase pours conduit or the second phase pours conduit installation and should meet following requirement: away from nose end 1~
1.5m, a phase pour conduit or the second stage of base opening for pouring conduit away from slot bottom distance controlling within the scope of 15~25cm, phase
The adjacent phase pours conduit or the second phase pours between conduit center away from no more than 3.5m.
Preferably, for the concrete by concrete production system mixing, the good clinker of mixing is defeated using truck-mixer
It send to notch is poured, through separate hopper and concrete conveyance a to phase is poured conduit to chute or the second phase pours at the top of conduit
What is be arranged pours in funnel, and pours conduit by the phase or the second phase pours the uniform blowing of conduit.
Beneficial effects of the present invention: the good seepage-proof property of cut-pff wall controls convenient for quality, and construction technology is simple, can operate
Property is strong, and construction cost is low, economic benefit is obvious.
Detailed description of the invention
Fig. 1 is the status diagram of phase slot section provided in an embodiment of the present invention construction step 1；
Fig. 2 is the status diagram of phase slot section provided in an embodiment of the present invention construction step 2；
Fig. 3 is the status diagram of phase slot section provided in an embodiment of the present invention construction step 3；
Fig. 4 is the status diagram of phase slot section provided in an embodiment of the present invention construction step 4；
Fig. 5 is the status diagram of phase slot section provided in an embodiment of the present invention construction step 5；
Fig. 6 is the status diagram of phase slot section provided in an embodiment of the present invention construction step 6；
Fig. 7 is the status diagram of phase slot section provided in an embodiment of the present invention construction step 7；
Fig. 8 is the status diagram of phase slot section provided in an embodiment of the present invention construction step 8；
Fig. 9 is the status diagram of the second stage of slot section construction step 1 provided in an embodiment of the present invention；
Figure 10 is the status diagram of the second stage of slot section construction step 2 provided in an embodiment of the present invention；
Figure 11 is the status diagram of the second stage of slot section construction step 3 provided in an embodiment of the present invention；
Figure 12 is the status diagram of the second stage of slot section construction step 4 provided in an embodiment of the present invention；
Figure 13 is the status diagram of the second stage of slot section construction step 5 provided in an embodiment of the present invention；
Figure 14 is the status diagram of the second stage of slot section construction step 6 provided in an embodiment of the present invention.
In figure: grab bucket 1；One phase junction block 2；One phase poured conduit 3；Nipple orifice 4；Scum pipe 5；Mud purifiers 6；Crane
7；Drawbench 8；Truck-mixer 9；One phase main aperture 10；One interim secondary orifices 11；The second stage of main aperture 12；The second stage of intermediate secondary orifices 13；
Second phase pours conduit 14.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
Embodiment 1
As shown in figs. 1 to 14, the present invention provides a kind of power station impervious wall construction method, and cut-pff wall is arranged in power station
The wall base on, the wall base be power station in soft base, cofferdam or dam, it is characterised in that: this method includes on the wall base
The phase slot section construction and the second stage of slot section construction successively carried out；The one phase slot section and the second stage of slot section are staggered；It is described
The construction of one phase slot section grabs one phase of side main aperture 10 with grab bucket 1 specifically includes the following steps: step 1 on the wall base；Step 2 is used
Grab bucket 1 grabs one phase of other side main aperture 10 on the wall base；Step 3 grabs shape after one interim secondary orifices 11 with grab bucket 1 on the wall base
At a phase slot；Step 4, a phase gas lift reverse circulation borehole cleaning；Step 5, divides into a phase junction block 2 and a phase pours conduit 3；6th
Step, casting concrete wall；Step 7 rises after concrete initial set and pulls out the phase junction block 2；Step 8, the phase junction block 2
It rises and forms nipple orifice 4 after pulling out, repeat above step 1-8 until the construction of all phase slot sections is completed；After the completion of the construction of one phase slot section
It constructs between an adjacent phase slot section the second stage of slot section；The second phase slot section construction specifically includes the following steps: step 1,
Two sides second phase main aperture 12 is grabbed on the wall base between an adjacent phase slot section with grab bucket 1；Step 2, with grab bucket 1 adjacent one
The second stage of slot is formed after grabbing second phase intermediate secondary orifices 13 on the wall base between phase slot section；Step 3, the second stage of gas lift reverse circulation borehole cleaning；
Step 4, dividing into the second phase pours conduit 14；Step 5, casting concrete wall；Step 6, at wall.
Embodiment 2
On the basis of embodiment 1, during crawl, when meeting boulder, using slot internal drilling explosion, slot cohesive energy
Explosion or again chisel (hammer) rush hit any method processing.
The slot internal drilling explosion is specifically: firstly, grab bucket 1 or percussive drill stop construction；Then with all-hydraulic work
Journey drill hole of drilling machine penetrates boulder；It finally divides into explosive cartridge and explosion is carried out to boulder.When explosion, explosive payload presses rock section in explosive cartridge
Long 2~3kg/m.When there is multiple explosive cartridges then to install millisecond detonator segment blast, to avoid slot safety is jeopardized.
The slot cohesive energy explosion is specifically: on boulder surface, underlying CUMULATIVE BLASTING cylinder carries out explosion, explosive cartridge sockets for collecting energy
Cone angle is 55~60 °, and explosive payload is controlled in 3~6kg, is up to 8kg.Shock reducing blasting is then used in the slot of the second stage of slot section
Cylinder, i.e., add a shielding cylinder, outside explosive cartridge to mitigate effect of the shock wave to wall has been poured.Slot cohesive energy explosion side
Method is simple and easy to do, interferes very little with impervious wall construction, is also used to correct hole deviation handling failure etc. sometimes, therefore applies very much.
Heavy chisel (hammer) punching is pounded specifically: being pounded with 1 10 tons of promotion of CZ-30 impact drill or wirerope grab bucket or more again chisel punching
After broken, 1 crawl of grab bucket is then utilized.
Embodiment 3
On the basis of embodiment 1, as shown in Fig. 4 and Figure 11, the phase gas lift reverse circulation borehole cleaning or the second stage of gaslift
Reacting cycle borehole cleaning is specifically: a phase slot perhaps after the hole shape acceptance(check) of the second stage of slot first with grab bucket 1 by a phase slot or
The second stage of slot bottom sandy gravel is caught, then uses gas lift method borehole cleaning.
The principle of the gas lift method is to mix liquid gas by gas-lift slag discharging device, raises tap bottom using density contrast to rise
Mud and sediment.Compressed air enters mixer from air hose, forms a kind of density in scum pipe 5 and is less than the liquid gas for managing outer mud
Mixture rises under the synergy of outer hydraulic pressure and compressed air kinetic energy along scum pipe 5, inside to make mud in hole
Slurry portable hole bottom sediment follows rising, is easily discharged out of the hole.The mud being easily discharged out of the hole removes the gred through mud purifiers 6, purification reaches qualified
By in return pipe reflux slot after standard.
Gradually down toward bottom hole successively tripping in scum pipe 5 is in the middle part of the slot during borehole cleaning, final 5 bottom end of scum pipe away from
0.2 m of sediment face~0.3m is carrying out circulation borehole cleaning from high to low in bottom hole.
In the second phase slot section construction when borehole cleaning, with the concrete hole wall of steel wire brush scrub nipple orifice 4.Using circular steel
Wire brush, hangs wire brush with grab bucket 1, wire brush is pressed on 4 inner wall of nipple orifice and up and down bucket body is segmented from top to bottom
Scrub, to achieve the purpose that clean hole wall.The standard of end is brush drill bit substantially without spare, and bottom hole is become silted up
Product is not further added by.
Embodiment 3
On the basis of embodiment 1, in concreting process and after the completion of pouring, according to slot inner concrete initial set situation
It gradually rises and pulls out junction block 2, in a phase groove hole end capitiform at nipple orifice 4, the nipple orifice 4 is used as the guide hole of the second stage of slot.Two
When phase slot casting concrete, nipple orifice 4 forms arc-shaped connector close to the side wall of a phase slot, and wall section forms effective connection.
As depicted in figure 5 and figure 12, dividing into a phase junction block 2 is specifically: lifting by crane a phase junction block 2 using crane 7, first lifts by crane
At the coxopodite of one phase junction block 2, it is directed at the phase slot center, vertical decentralization to a phase slot bottom；When pulling up, using pulling out
Pipe machine 8 carries out rising for a phase junction block 2 and pulls out.
It rises and pulls out a phase junction block 2, it is necessary to which accurate detection and the first final setting time for determining concrete minimize artificial
Aggregate Feeding Error.When casting concrete, with the continuous rising of concrete surface, make concrete sample stage by stage, thus more accurate
Grasp the first of concrete, final setting time.
Embodiment 4
On the basis of embodiment 1, as shown in Fig. 5 to Fig. 7 and Figure 12, the phase pours conduit 3 or the second phase pours
Conduit 14 is built using the steel pipe of the Φ 250 of quick screwed connection, pipe joint is equipped with hanging equipment and assembles O-shaped rubber seal
Circle guarantees that cement slurry leakage does not occur at pipe joint.
One phase pour conduit 3 or the second phase pour 14 use of conduit before do straightening inspection, packer permeability test, circularity inspection
It tests, wear intensity is examined and Welding Testing.The qualified conduit 3 that pours is examined to do awake purpose mark.It is underproof to pour conduit 3 not
Give use.
One phase pours conduit 3 or the second phase pours conduit 14 in the support frame section steel manufacture in aperture, bearing capacity
2.5 times or more of total weight when pouring conduit 3 are full of greater than concrete.
One phase pours conduit 3 or the second phase pours conduit 14 and successively divides into according to piping diagram, according to each slot segment length
Degree lays more set conduits, several sections of length should be arranged as 0.3m~1.0m's with upper bit at the top of every set conduit and coxopodite conduit
Short tube.
One phase, which pours conduit 3, or the second phase pours the installation of conduit 14 should meet following requirement: away from 1~1.5m of nose end,
One phase pours conduit 3 or the second stage of base opening for pouring conduit 14 away from slot bottom distance controlling within the scope of 15~25cm, adjacent
A phase pour conduit 3 or the second phase pours between conduit 14 center away from no more than 3.5m, when bottom hole height difference is greater than 25cm
When, the bosom for pouring 3 center of conduit and being seated in the conduit control range.
Embodiment 5
On the basis of embodiment 1, as shown in Fig. 6 to Fig. 8 and Figure 13 and Figure 14, the concrete is autochthonal by coagulation
Production system mixing, the good clinker of mixing are delivered to using truck-mixer 9 and are poured notch, through separate hopper and chute by concrete
It is delivered to that the phase pours conduit 3 or the second phase pours pouring in funnel of being arranged at the top of conduit 14, and is poured by the phase
It builds conduit 3 or the second phase pours the uniform blowing of conduit 14, advantageously ensure that concrete surface uniformly rises.
The concrete is mixed by cement, coarse aggregate, fine aggregate, additive and water.Wherein, the intensity etc. of cement
Grade should be the concrete construction specification relevant regulations of DL/T5144-2001 by number, should select ordinary portland cement.Institute
Natural pebble should preferentially be selected by stating coarse aggregate, and maximum particle diameter should be not more than 40mm.The fine aggregate should select fineness modulus 2.4
The medium-fine sand of~3.0 ranges.The additive includes the quality of water-reducing agent, air entraining agent etc. and volume should be through testing, and referring to DL/
The pertinent regulations of the 6th chapter of T5100-1999 execute.The water should abide by Section 5.5 of DL/T5144-2001 of pertinent regulations.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (3)
1. a kind of power station impervious wall construction method, cut-pff wall is arranged on the wall base in power station, and the wall base is in power station
Soft base, cofferdam or dam, it is characterised in that: this method include successively carried out on the wall base a phase slot section construction and second phase
The construction of slot section；The one phase slot section and the second stage of slot section are staggered；One phase slot section construction specifically includes the following steps:
Step 1 grabs one phase of side main aperture (10) with grab bucket (1) on the wall base；Step 2 grabs the other side with grab bucket (1) on the wall base
One phase main aperture (10)；Step 3 grabs one interim secondary orifices (11) on the wall base with grab bucket (1) and forms a phase slot afterwards；Step 4,
One phase gas lift reverse circulation borehole cleaning；Step 5, divides into a phase junction block (2) and a phase pours conduit (3)；Step 6, casting concrete
Wall；Step 7 rises after concrete initial set and pulls out the phase junction block (2)；Step 8, the phase junction block (2) rise and pull out rear shape
At nipple orifice (4), above step 1-8 is repeated until the construction of all phase slot sections is completed；Adjacent after the completion of the construction of one phase slot section
A phase slot section between construct the second stage of slot section；The second phase slot section construction is specifically includes the following steps: step 1, with grab bucket
(1) two sides second phase main aperture (12) are grabbed on the wall base between an adjacent phase slot section；Step 2, with grab bucket (1) adjacent one
Second phase intermediate secondary orifices (13) is grabbed on the wall base between phase slot section forms the second stage of slot afterwards；Step 3, the second stage of gas lift reverse circulation are clear
Hole；Step 4, dividing into the second phase pours conduit (14)；Step 5, casting concrete wall；Step 6, at wall；
During crawl, when meeting boulder, using slot internal drilling explosion, the explosion of slot cohesive energy or again chisel rush it is hit any
Kind method processing；
The one phase gas lift reverse circulation borehole cleaning or the second stage of gas lift reverse circulation borehole cleaning are specifically: a phase slot or the second stage of slot
After the shape acceptance(check) of hole, first a phase slot or the second stage of slot bottom sandy gravel are caught with grab bucket (1), then clear using gas lift method
Hole；
When the second phase slot section borehole cleaning, with the concrete hole wall of steel wire brush scrub nipple orifice (4)；
A phase junction block (2) of dividing into is specifically: lifting by crane a phase junction block (2) using crane (7), first lifts by crane a phase junction block
(2) at coxopodite, the phase slot center, vertical decentralization to a phase slot bottom are directed at；When pulling up, using drawbench (8)
Rising for a phase junction block (2) is carried out to pull out；
One phase, which pours conduit (3), or the second phase pours conduit (14) installation should meet following requirement: away from 1~1.5m of nose end,
One phase pours conduit (3) or the second phase pours the base opening of conduit (14) away from slot bottom distance controlling within the scope of 15~25cm,
The adjacent phase pours conduit (3) or the second phase pours between conduit (14) center away from no more than 3.5m；
The slot cohesive energy explosion is specifically: on boulder surface, underlying CUMULATIVE BLASTING cylinder carries out explosion, explosive cartridge sockets for collecting energy cone angle
It is 55~60 °, explosive payload is controlled in 3~6kg, is up to 8kg；Shock reducing blasting cylinder is then used in the slot of the second stage of slot section, i.e.,
A shielding cylinder is added, outside explosive cartridge to mitigate effect of the shock wave to wall has been poured；A phase groove hole end capitiform at
Nipple orifice, the nipple orifice are used as the guide hole of the second stage of slot；When the second stage of slot casting concrete, nipple orifice is close to a phase slot
Side wall form arc-shaped connector, wall section forms effective connection.
2. impervious wall construction method in power station according to claim 1, it is characterised in that: the phase pours conduit (3)
Or the second phase pours conduit (14) using the steel pipe of the Φ 250 of quick screwed connection.
3. impervious wall construction method in power station according to claim 1, it is characterised in that: the concrete is autochthonal by coagulation
Production system mixing, the good clinker of mixing are delivered to using truck-mixer (9) and are poured notch, through separate hopper and chute by coagulation
Soil is delivered to that the phase pours conduit (3) or the second phase pours pouring in funnel of being arranged at the top of conduit (14), and by described
One phase poured conduit (3) or the second phase pours conduit (14) uniform blowing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710271223.5A CN106948354B (en) | 2017-04-24 | 2017-04-24 | A kind of power station impervious wall construction method |
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| CN201710271223.5A CN106948354B (en) | 2017-04-24 | 2017-04-24 | A kind of power station impervious wall construction method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107702604B (en) * | 2017-10-24 | 2019-02-19 | 中国水利水电第七工程局成都水电建设工程有限公司 | For the construction technology of the huge lonely erratic boulder of alluviation granite in impervious wall construction |
| CN110184999B (en) * | 2019-05-05 | 2021-01-05 | 广州中寓建设工程有限公司 | Seepage-proofing reinforcing process for dam foundation of hydraulic engineering dam |
| CN110565589A (en) * | 2019-08-29 | 2019-12-13 | 上海建工一建集团有限公司 | Water conservancy project diaphragm wall and construction method thereof |
| CN110541425B (en) * | 2019-10-12 | 2020-07-31 | 中国水电基础局有限公司 | Construction method of weir plug body impervious wall |
| CN110644437B (en) * | 2019-10-12 | 2020-08-07 | 中国水电基础局有限公司 | Rapid construction method of barrier body diaphragm wall for preventing concrete from adhering to pipe wall |
| CN111042060B (en) * | 2019-12-30 | 2021-02-09 | 中国水电基础局有限公司 | Ultra-deep impervious wall section connecting method |
| CN113026688B (en) * | 2021-02-08 | 2022-04-22 | 中国水电基础局有限公司 | System for expanding piles to form wall by using foundation rocks at bottom of concrete guide wall foundation |
| CN114482107A (en) * | 2022-01-21 | 2022-05-13 | 广东南方建设集团有限公司 | Construction method of impervious wall |
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| JP4015143B2 (en) * | 2004-07-26 | 2007-11-28 | 株式会社白川工業 | Forming method of retaining wall in boundary area of adjacent existing structure and retaining formwork combination used for the method |
| CN102465536A (en) * | 2010-11-12 | 2012-05-23 | 石峰 | Construction process for cleaning holes in groove section of anti-seepage wall by air-lift method |
| CN103967024A (en) * | 2013-01-25 | 2014-08-06 | 深圳市勘察测绘院有限公司 | United construction method for forming holes and grooves in deep sandy gravel stratum |
| CN104947690B (en) * | 2015-06-19 | 2017-02-01 | 深圳市工勘岩土集团有限公司 | Grooving construction method for embedding underground continuous wall into rock |
| CN105951711A (en) * | 2016-05-25 | 2016-09-21 | 中国能源建设集团安徽电力建设第工程有限公司 | Enclosing construction method of underground continuous wall of seashore power station |
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