CN106948354A - 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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- CN106948354A CN106948354A CN201710271223.5A CN201710271223A CN106948354A CN 106948354 A CN106948354 A CN 106948354A CN 201710271223 A CN201710271223 A CN 201710271223A CN 106948354 A CN106948354 A CN 106948354A
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- wall
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Classifications
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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
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- 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
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- 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
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- 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
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- 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)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (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 method, it is included in the phase groove section construction and the second stage of groove section construction carried out successively on the wall base；One phase groove section and the second stage of groove section are staggered；Each groove section is divided into both sides main aperture and middle secondary orifices totally three single holes, and middle secondary orifices is captured after the main aperture of both sides to ensure first to capture in the construction of slotted eye pass；Casting concrete wall again after the completion of the crawl of hole.The difficulty of construction can be reduced using this method, shortens the duration, it is to avoid the waste of man power and material.
Description
Technical field
The present invention relates to the construction method of hydraulic engineering, and in particular to a kind of power station impervious wall construction method.
Background technology
At present, the cut-pff wall in highlands has following construction Difficulties：
1st, some power station impervious wall construction scope of operation height above sea levels are about 3069m, belong to high altitude localities, construction machinery and are applied
Workman person's efficiency of construction can be reduced.
2nd, in these highlands, Landslide deposit block crushed stone soil layer, sand gravel stratum contain boulder, erratic boulder；Longkou of damming is wide
33.3m, the big boulder of Longkou throwing and block stone are more when damming, and will restrict the quick trenching construction of cut-pff wall, while slotted eye degree of safety
Reduction, forms potential safety hazard.
3rd, during Hydropower Station Construction, upstream cofferdam is backfilled using sand material, permeable serious, especially in Longkou fragment position, is held one's breath
Effect is not good, there is big seepage channel, increases grooving difficulty, jeopardizes equipment and weir body safety.
4th, to belong to ecological environment around nature reserve area, construction area good for some highlands, can be used during impervious wall construction
Substantial amounts of mud, if processing is bad, meeting severe contamination surrounding enviroment, therefore this engineering is very high to environmental requirement.
The content 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, the difficulty of construction can be reduced using this method, shorten the duration, it is to avoid the waste of man power and material.
To realize above-mentioned technical purpose, the present invention, which is adopted the following technical scheme that, to be achieved.
A kind of power station impervious wall construction method, cut-pff wall is set on the wall base in power station, and the wall base is power station
Interior soft base, cofferdam or dam, this method is included in the phase groove section construction and the second stage of groove section construction carried out successively on the wall base；
The one phase groove section and the second stage of groove section are staggered；The one phase groove section construction specifically includes following steps：1st step, is used
Grab bucket captures one phase of side main aperture on the wall base；2nd step, one phase of opposite side main aperture is captured with grab bucket on the wall base；3rd step, is used
Grab bucket forms a phase slotted eye after capturing one interim secondary orifices on the wall base；4th step, a phase gas lift reverse circulation borehole cleaning；5th step, under
If a phase junction block and a phase pour conduit；6th step, casting concrete wall；Risen after 7th step, concrete initial set and pull out described one
Phase junction block；8th step, the phase junction block forms nipple orifice after pulling out, repeat above step 1-8 until all phase grooves section
Construction is completed；Constructed after the completion of one phase groove section construction between adjacent phase groove section the second stage of groove section；The second stage of groove section
Construction specifically includes following steps：1st step, captures the both sides second phase main with grab bucket on the wall base between an adjacent phase groove section
Hole；2nd step, the second stage of slotted eye is formed with grab bucket in the middle of the crawl second phase on the wall base between an adjacent phase groove section after secondary orifices；3rd
Step, the second stage of gas lift reverse circulation borehole cleaning；4th step, dividing into the second phase pours conduit；5th step, casting concrete wall；6th step, into wall.
It is preferred that, during crawl, when meeting boulder, using groove internal drilling explosion, groove cohesive energy explosion or again
Chisel rushes hit any method processing.
It is preferred that, the phase gas lift reverse circulation borehole cleaning or the second stage of gas lift reverse circulation borehole cleaning are specifically：One phase slotted eye or
After the hole shape acceptance(check) of person's second phase slotted eye, first one phase slotted eye or the second stage of slotted eye bottom sandy gravel are caught with grab bucket, then adopts
Use gas lift method borehole cleaning.
It is preferred that, during the second stage of groove section borehole cleaning, the concrete hole wall of nipple orifice is scrubbed with steel wire brush.
A phase junction block of dividing into is specifically：One phase junction block is lifted by crane using crane, the bottom of a phase junction block is first lifted by crane
At section, alignment carries out rising for a phase junction block and pulled out.
It is preferred that, the phase pours conduit or the second phase pours steel pipe of the conduit using the Φ 250 of quick screwed connection.
It is preferred that, the phase pours conduit or the second phase pours conduit installation and should meet following requirement：Away from nose end 1~
1.5m, the phase pours conduit or the second stage of base opening for pouring conduit away from bottom land distance controlling in the range of 15~25cm, phase
The adjacent phase pours conduit or the second phase pours centre-to-centre spacing no more than 3.5m between conduit.
It is preferred that, the concrete is by concrete production system mixing, and the good clinker of mixing is defeated using truck-mixer
Deliver to and pour notch, concrete conveyance a to phase is poured into conduit through separate hopper and chute or the second phase is poured at the top of conduit
What is set 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, it is easy to quality control, construction technology is simple, operable
Property it is strong, construction cost is low, economic benefit is obvious.
Brief description of the drawings
Fig. 1 is the view of phase groove provided in an embodiment of the present invention section the 1st step of construction；
Fig. 2 is the view of phase groove provided in an embodiment of the present invention section the 2nd step of construction；
Fig. 3 is the view of phase groove provided in an embodiment of the present invention section the 3rd step of construction；
Fig. 4 is the view of phase groove provided in an embodiment of the present invention section the 4th step of construction；
Fig. 5 is the view of phase groove provided in an embodiment of the present invention section the 5th step of construction；
Fig. 6 is the view of phase groove provided in an embodiment of the present invention section the 6th step of construction；
Fig. 7 is the view of phase groove provided in an embodiment of the present invention section the 7th step of construction；
Fig. 8 is the view of phase groove provided in an embodiment of the present invention section the 8th step of construction；
Fig. 9 is the view of the second stage of groove section the 1st step of construction provided in an embodiment of the present invention；
Figure 10 is the view of the second stage of groove section the 2nd step of construction provided in an embodiment of the present invention；
Figure 11 is the view of the second stage of groove section the 3rd step of construction provided in an embodiment of the present invention；
Figure 12 is the view of the second stage of groove section the 4th step of construction provided in an embodiment of the present invention；
Figure 13 is the view of the second stage of groove section the 5th step of construction provided in an embodiment of the present invention；
Figure 14 is the view of the second stage of groove section the 6th step of construction 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；Secondary orifices 13 in the middle of the second stage of；
Second phase pours conduit 14.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings：
Embodiment 1
As shown in Fig. 1 to Figure 14, the present invention provides a kind of power station impervious wall construction method, and cut-pff wall sets the wall in power station
On base, the wall base is soft base, cofferdam or the dam in power station, it is characterised in that：This method is included on the wall base successively
The phase groove section construction and the second stage of groove section construction carried out；The one phase groove section and the second stage of groove section are staggered；One phase
Groove section construction specifically includes following steps：1st step, one phase of side main aperture 10 is captured with grab bucket 1 on the wall base；2nd step, with grab bucket
1 captures one phase of opposite side main aperture 10 on the wall base；3rd step, one is formed after capturing one interim secondary orifices 11 on the wall base with grab bucket 1
Phase slotted eye；4th step, a phase gas lift reverse circulation borehole cleaning；5th step, divides into a phase junction block 2 and a phase pours conduit 3；6th step, is poured
Build concrete wall；Risen after 7th step, concrete initial set and pull out the phase junction block 2；8th step, the phase junction block 2 is pulled out
Nipple orifice 4 is formed afterwards, repeats above step 1-8 until the section construction of all phase grooves is completed；In phase after the completion of one phase groove section construction
Constructed between an adjacent phase groove section the second stage of groove section；The second stage of groove section construction specifically includes following steps：1st step, with grabbing
The second stage of main aperture 12 in crawl both sides on the wall base between an adjacent phase groove section of bucket 1；2nd step, with grab bucket 1 in an adjacent phase groove
Form the second stage of slotted eye on the wall base between section in the middle of the crawl second phase after secondary orifices 13；3rd step, the second stage of gas lift reverse circulation borehole cleaning；4th
Step, dividing into the second phase pours conduit 14；5th step, casting concrete wall；6th step, into wall.
Embodiment 2
On the basis of embodiment 1, during crawl, when meeting boulder, using groove internal drilling explosion, groove cohesive energy explosion
Or dig again（Hammer）Rush hit any method processing.
The groove internal drilling explosion is specifically：First, grab bucket 1 or percussive drill stop construction；Then all-hydraulic work is used
Journey drill hole of drilling machine penetrates boulder；Finally divide into explosive cartridge and explosion is carried out to boulder.During explosion, explosive payload is by rock section in explosive cartridge
Long 2~3kg/m.When there is multiple explosive cartridges then to install millisecond detonator segment blast, to avoid jeopardizing slotted eye safety.
The groove 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 8kg to the maximum.Shock reducing blasting is then used in the slotted eye of the second stage of groove section
Cylinder, i.e., add a shielding cylinder outside explosive cartridge, to mitigate shock wave to having poured the effect of wall.Groove cohesive energy explosion side
Method is simple and easy to do, and very little is disturbed with impervious wall construction, amendment hole deviation handling failure etc. is additionally operable to sometimes, therefore apply a lot.
The heavy chisel（Hammer）Punching is pounded specifically：With CZ-30 impact drills or steel wire rope grab bucket 1 lifting more than 10 tons again dig punching pound
After broken, then captured using grab bucket 1.
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 air lift reverse are followed
Ring borehole cleaning is specifically：After the hole shape acceptance(check) of one phase slotted eye or the second stage of slotted eye, grab bucket 1 is first used by a phase slotted eye or second phase
Slotted eye bottom sandy gravel is caught, then using gas lift method borehole cleaning.
The principle of the gas lift method is to mix liquid gas by gas-lift slag discharging device, and tap bottom is raised to rise using density contrast
Mud and sediment.Compressed air enters blender from airduct, and a kind of density is formed in scum pipe 5 and is less than the liquid gas for managing outer mud
Mixture, rises under the synergy of inside and outside hydraulic pressure and compressed air kinetic energy along scum pipe 5, so that mud in hole
Slurry portable hole bottom sediment follows rising, outside tap.Mud outside tap removes the gred through mud purifiers 6, purify reach it is qualified
Flowed back after standard by return pipe in slotted eye.
Entering scum pipe 5 during borehole cleaning down successively in the middle part of the slotted eye gradually under to bottom hole, the final bottom of scum pipe 5 away from
0.2 m of sediment face~0.3m, borehole cleaning is being circulated in bottom hole from high to low.
In the second stage of groove section construction during borehole cleaning, the concrete hole wall of nipple orifice 4 is scrubbed with steel wire brush.Using circular steel
Wire brush, hangs wire brush, wire brush is pressed on the inwall of nipple orifice 4 and up and down bucket body is segmented from top to bottom with grab bucket 1
Scrub, so as to reach the purpose cleaned to hole wall.The standard of end is that brush drill bit is basic 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 the pre-hardening situation of groove inner concrete gradually
Rise and pull out junction block 2, in a phase groove hole end capitiform into nipple orifice 4, the nipple orifice 4 is used as the guide hole of the second stage of slotted eye.The second stage of groove
During the casting concrete of hole, nipple orifice 4 is close to the side wall formation circular arc joint of a phase slotted eye, and wall section, which is formed, effectively to be connected.
As depicted in figure 5 and figure 12, dividing into a phase junction block 2 is specifically：One phase junction block 2 is lifted by crane using crane 7, first lifted by crane
At the coxopodite of one phase junction block 2, the phase slotted eye center, vertical decentralization to a phase slotted eye bottom are directed at；When pulling up, using pulling out
Pipe machine 8 carries out rising for a phase junction block 2 and pulled out.
Rise and pull out a phase junction block 2, it is necessary to accurately detect and determine the first final setting time of concrete, reduce as far as possible artificial
Aggregate Feeding Error.During casting concrete, with the continuous rising of concrete surface, make concrete sample stage by stage, so that more accurate
Grasp the first of concrete, final setting time.
Embodiment 4
On the basis of embodiment 1, such as Fig. 5 to Fig. 7, and shown in Figure 12, the phase pours conduit 3 or the second phase pours and led
Pipe 14 is using the Φ 250 of quick screwed connection steel pipe, and pipe joint is provided with hanging equipment and assembles O-shaped rubber seal, protects
Cement mortar seepage does not occur at card pipe joint.
One phase pours conduit 3 or the second phase pours and straightening inspection, packer permeability test, circularity inspection are done before the use of conduit 14
Test, 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 and using.
One phase pours conduit 3 or the second phase pours support frame section steel manufacture of the conduit 14 in aperture, its bearing capacity
More than 2.5 times of gross weight when pouring conduit 3 are full of more than concrete.
One phase pours conduit 3 or the second phase pours conduit 14 and divided into successively according to piping diagram, according to each groove segment length
Degree lays many set conduits, should set several sections of length as 0.3m~1.0m's using upper bit at the top of every set conduit and coxopodite conduit
Short tube.
One phase pours conduit 3 or the second phase pours the installation of conduit 14 and 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 bottom land distance controlling in the range of 15~25cm, adjacent
A phase pour conduit 3 or the second phase pours centre-to-centre spacing no more than 3.5m between conduit 14, when the bottom hole discrepancy in elevation is more than 25cm
When, it is described to pour the bosom that the center of conduit 3 is seated in the conduit control range.
Embodiment 5
On the basis of embodiment 1, such as Fig. 6 to Fig. 8, and shown in Figure 13 and Figure 14, the concrete is by concrete production system
Unite mixing, the good clinker of mixing is delivered to using truck-mixer 9 and pours notch, through separate hopper and chute by concrete conveyance
Conduit 3 is poured to the phase or the second phase pours that the top of conduit 14 sets pours in funnel, and is poured and led by the phase
Pipe 3 or second phase pour 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, intensity of cement etc.
Level should be DL/T5144-2001 concrete construction specification relevant regulations by number, should select Portland cement.Institute
Natural pebble should preferentially be selected by stating coarse aggregate, and its maximum particle diameter should be not more than 40mm.The fine aggregate should select modulus of fineness 2.4
The medium-fine sand of~3.0 scopes.The quality and volume that the additive includes water reducer, air entraining agent etc. should be through experiments, and with reference to DL/
The pertinent regulations of the chapters of T5100-1999 the 6th are performed.The water should observe Section 5.5 of DL/T5144-2001 pertinent regulations.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and modification of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (8)
1. a kind of power station impervious wall construction method, cut-pff wall is set on the wall base in power station, the wall base is in power station
Soft base, cofferdam or dam, it is characterised in that：This method is included in the phase groove section construction carried out successively on the wall base and second phase
Groove section construction；The one phase groove section and the second stage of groove section are staggered；The one phase groove section construction specifically includes following steps：
1st step, with grab bucket（1）One phase of side main aperture is captured on the wall base（10）；2nd step, with grab bucket（1）Opposite side is captured on the wall base
One phase main aperture（10）；3rd step, with grab bucket（1）One interim secondary orifices is captured on the wall base（11）After form a phase slotted eye；4th step,
One phase gas lift reverse circulation borehole cleaning；5th step, divides into a phase junction block（2）Conduit is poured with a phase（3）；6th step, casting concrete
Wall；Risen after 7th step, concrete initial set and pull out the phase junction block（2）；8th step, the phase junction block（2）Rise and pull out rear shape
Into nipple orifice（4）, above step 1-8 is repeated until the section construction of all phase grooves is completed；Adjacent after the completion of one phase groove section construction
A phase groove section between construct the second stage of groove section；The second stage of groove section construction specifically includes following steps：1st step, with grab bucket
（1）The second stage of main aperture in crawl both sides on the wall base between an adjacent phase groove section（12）；2nd step, with grab bucket（1）Adjacent one
Secondary orifices in the middle of the crawl second phase on the wall base between phase groove section（13）The second stage of slotted eye is formed afterwards；3rd step, the second stage of gas lift reverse circulation is clear
Hole；4th step, dividing into the second phase pours conduit（14）；5th step, casting concrete wall；6th step, into wall.
2. impervious wall construction method in power station according to claim 1, it is characterised in that：During crawl, work as chance
During boulder, using groove internal drilling explosion, the explosion of groove cohesive energy or chisel rushes hit any method and handled again.
3. impervious wall construction method in power station according to claim 1, it is characterised in that：The one phase gas lift reverse circulation is clear
Hole or the second stage of gas lift reverse circulation borehole cleaning are specifically：After the hole shape acceptance(check) of one phase slotted eye or the second stage of slotted eye, first with grab bucket
（1）One phase slotted eye or the second stage of slotted eye bottom sandy gravel are caught, then using gas lift method borehole cleaning.
4. impervious wall construction method in power station according to claim 1, it is characterised in that：During the second stage of groove section borehole cleaning,
Nipple orifice is scrubbed with steel wire brush（4）Concrete hole wall.
5. impervious wall construction method in power station according to claim 1, it is characterised in that：It is described to divide into a phase junction block
（2）Specifically：Using crane（7）Lift by crane a phase junction block（2）, first lift by crane a phase junction block（2）Coxopodite at, alignment described one
Phase slotted eye center, vertical decentralization to a phase slotted eye bottom；When pulling up, using drawbench（8）Carry out a phase junction block（2）Rise
Pull out.
6. impervious wall construction method in power station according to claim 1, it is characterised in that：One phase pours conduit（3）
Or the second phase pours conduit（14）Using the Φ 250 of quick screwed connection steel pipe.
7. impervious wall construction method in power station according to claim 1, it is characterised in that：One phase pours conduit（3）
Or the second phase pours conduit（14）Installation should meet following requirement：Away from 1~1.5m of nose end, the phase pours conduit（3）Or
Second phase pours conduit（14）Base opening away from bottom land distance controlling in the range of 15~25cm, the adjacent phase pours conduit
（3）Or the second phase pours conduit（14）Between centre-to-centre spacing be not more than 3.5m.
8. 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 uses truck-mixer（9）It is delivered to and pours notch, through separate hopper and chute by coagulation
Soil is delivered to the phase and pours conduit（3）Or the second phase pours conduit（14）What top was set pours in funnel, and by described
One phase poured conduit（3）Or the second phase pours conduit（14）Uniform blowing.
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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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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107702604A (en) * | 2017-10-24 | 2018-02-16 | 中国水利水电第七工程局成都水电建设工程有限公司 | The construction technology of the huge lonely erratic boulder of alluviation granite is directed in impervious wall construction |
| CN110184999A (en) * | 2019-05-05 | 2019-08-30 | 广州中寓建设工程有限公司 | A kind of anti-seepage reinforcing technique of hydraulic engineering dam foundation |
| CN110541425A (en) * | 2019-10-12 | 2019-12-06 | 中国水电基础局有限公司 | Construction method of weir plug body impervious wall |
| 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 |
| CN110644437A (en) * | 2019-10-12 | 2020-01-03 | 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 |
| CN111042060A (en) * | 2019-12-30 | 2020-04-21 | 中国水电基础局有限公司 | Ultra-deep impervious wall section connecting method |
| CN113026688A (en) * | 2021-02-08 | 2021-06-25 | 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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| CN107702604A (en) * | 2017-10-24 | 2018-02-16 | 中国水利水电第七工程局成都水电建设工程有限公司 | The construction technology of the huge lonely erratic boulder of alluviation granite is directed in impervious wall construction |
| CN110184999A (en) * | 2019-05-05 | 2019-08-30 | 广州中寓建设工程有限公司 | A kind of anti-seepage reinforcing technique of hydraulic engineering dam foundation |
| 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 |
| CN110541425A (en) * | 2019-10-12 | 2019-12-06 | 中国水电基础局有限公司 | Construction method of weir plug body impervious wall |
| CN110644437A (en) * | 2019-10-12 | 2020-01-03 | 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 |
| CN111042060A (en) * | 2019-12-30 | 2020-04-21 | 中国水电基础局有限公司 | Ultra-deep impervious wall section connecting method |
| CN113026688A (en) * | 2021-02-08 | 2021-06-25 | 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 |
| 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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