CN110158543A - A kind of dam face slab joint seal construction technology - Google Patents
A kind of dam face slab joint seal construction technology Download PDFInfo
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- CN110158543A CN110158543A CN201910534765.6A CN201910534765A CN110158543A CN 110158543 A CN110158543 A CN 110158543A CN 201910534765 A CN201910534765 A CN 201910534765A CN 110158543 A CN110158543 A CN 110158543A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- General Engineering & Computer Science (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention discloses a kind of dam face slab joint seal construction technologies, comprising the following steps: S1: disconnected digging extrusion side wall along concrete slab vertical lap seam direction；S2: periphery fissure crack gauge is installed on bracket, and measures the width of the depth in gap, the width of gap bottom and sealing, clears up seam face；S3: in concrete squeezing sidewall slope surface；The concrete slab stage construction seam crossing of concrete face rockfill dam is provided with bituminizing Chinese fir board, bituminizing Chinese fir board bottom sets the second rubber bar and foam sealing, bituminizing Chinese fir board bottom dome is equipped with the first rubber bar, waveform sealing piece is arranged in surface layer, so that concrete slab deforms with dam settlement and rotates and settle, so that concrete slab and dam settlement compatible deformation, i.e. patch is rotated with concrete slab slope surface and is rotated, it can be effectively solved quality problems caused by leading to the disconnected plate of concrete slab horizontal direction because of the sedimentation of dam filing rockfill or collapse.
Description
Technical field:
The present invention relates to joint technique field, specially a kind of dam face slab joint seal construction technology.
Background technique:
The joint seal of concrete face rockfill dam is that face dam is built compared with the main thoroughfare and face dam for easily causing leak
One of the key of dam technology specially works out this standard in power industry standard, summarizes China's warp that face dam is built over 15 years
Lesson and scientific achievement are tested, the needs of engineering practice are not only, and has basis, by the implementation of this specification, makes every effort to make
Joint of CFRD water sealing structure, material and the technology of construction comply with standard, and advantageously ensure that joint of CFRD sealing quality, avoid
The generation of accident reduces pollution of the non-renewable energy to atmospheric environment to preserve the ecological environment, and makes full use of regeneration and cleaning energy
Hydropower Industry is greatly developed in source, and Hydropower Dam is the main hydraulic structure that must be built, and concrete face rockfill dam is
Local material dam is made full use of, it is not only economical but also quick, it is modern particularly suitable for remote mountain areas, especially Chinese west area
In the structure of concrete face rockfill dam, the continuous construction concrete slab of use is the concrete slab of a rigidity after hardening,
Due to being rigid connection between concrete slab by stages, dam settlement deformation easily causes concrete slab to come to nothing with bedding material, and
Any measure is not taken, be easy to cause concrete slab to be broken or collapse with coming to nothing for dam body bedding material, to dam safety
It is unfavorable to run.
The prior art has the following problems:
Existing joint seal technique weakens the anti-extrusion useful area of concrete slab in concrete slab edge fluting
Area, it is unfavorable to the anti-extrusion damage capability of concrete slab, it not can solve because the sedimentation of dam filing rockfill leads to concrete
Panel-level is to disconnected plate or collapses caused quality problems.
Summary of the invention:
The purpose of the present invention is to provide a kind of dam face slab joint seal construction technologies, to solve in above-mentioned background technique
It is proposed that existing joint seal technique weakens the anti-extrusion useful area area of concrete slab in concrete slab edge fluting,
It is unfavorable to the anti-extrusion damage capability of concrete slab, it not can solve because the sedimentation of dam filing rockfill leads to concrete slab water
The problem of putting down to disconnected plate or collapsing caused quality problems.
To achieve the above object, the invention provides the following technical scheme: a kind of dam face slab joint seal construction technology, packet
Include following steps:
S1: disconnected digging extrusion side wall along concrete slab vertical lap seam direction；
S2: periphery fissure crack gauge is installed on bracket, and measures the width and sealing of the depth in gap, gap bottom
Width, clear up seam face；
S3: in concrete squeezing sidewall slope surface, determining the position of concrete slab vertical lap seam and the range of mortar bed,
The raggle in range with crooked chisel, is laid with the mortar bed of M20；
S4: after vertical lap seam mortar bed is constructed, trimming processing is carried out to concrete squeezing sidewall face on the basis of it；
S5: one layer of antiseepage film is coated on concrete slab；
S6: foam is inserted in the bottom in gap, and places the second rubber bar at the top of foam；
S7: bituminizing Chinese fir board is placed in the top of the first rubber bar, and is placed at the top of bituminizing Chinese fir board
First rubber bar；
S8: waterstop is installed to the top of the first rubber bar, and with fixed plate, screw bolt and nut, by sealing
Band is stabilized in V-shaped groove, clears up waterstop surface dirt；
S9: filler, filler bulge landfill and molding are inserted on waterstop；
S10: in the top covered protection cover of waterstop, shield is simultaneously stabilized on concrete slab by bolt.
As the technical program further preferred that the sealing piece is waveform shape.
As the technical program further preferred that the foam is polyurethane foam.
As the technical program further preferred that the shield is semicircular structure.
As the technical program further preferred that the filler is GB plastic filler, the area of filler is 1410 flat
Square centimetre.
As the technical program further preferred that the antiseepage film is PVC smooth surface antiseepage film, the formula that stops dropping relaxation is rich
Remaining >=50 millimeter.
As the technical program further preferred that the bottom of the antiseepage film is equipped with closure PVC sleeve.
As the technical program further preferred that S4 supplement the following steps are included:
After step 1), the trimming of extrusion side wall slope surface, pitch spraying machine from top to bottom starts to spray emulsified asphalt, first
An emulsified asphalt is sprayed in slope surface, second time emulsified asphalt of fill-before-fire after dry sheds sand, then sprays third all over cream
Change pitch, spills one layer of sand again in slope surface, emulsified asphalt is the solvent diluting emulsion that bitumen content is 60%；
Step 2), the every block concrete slab reinforcement of field fabrication, the connector of concrete slab reinforcing bar are straight using ripping rib and rolling depressing
Screw shell connection；Reinforcing bar two ends are machined to screw-type with dedicated thread, and is covered and is protected with rigid plastics.
Compared with prior art, the beneficial effects of the present invention are: concrete face rockfill dam concrete slab by stages
Bituminizing Chinese fir board is provided at Construction Joint, bituminizing Chinese fir board bottom sets the second rubber bar and foam sealing, pitch
It impregnates Chinese fir board bottom dome and is equipped with the first rubber bar, waveform sealing piece is arranged in surface layer, so that concrete slab is heavy with dam
Drop deformation and rotate sedimentation so that concrete slab and dam settlement compatible deformation, i.e. patch with the rotation of concrete slab slope surface and
Rotation can be effectively solved because the sedimentation of dam filing rockfill leads to the disconnected plate of concrete slab horizontal direction or collapse to cause
Quality problems.
Specific embodiment:
Embodiment
The present invention provides a kind of technical solution: a kind of dam face slab joint seal construction technology, comprising the following steps:
S1: disconnected digging extrusion side wall along concrete slab vertical lap seam direction；
S2: periphery fissure crack gauge is installed on bracket, and measures the width and sealing of the depth in gap, gap bottom
Width, clear up seam face；
S3: in concrete squeezing sidewall slope surface, determining the position of concrete slab vertical lap seam and the range of mortar bed,
The raggle in range with crooked chisel, is laid with the mortar bed of M20；
S4: after vertical lap seam mortar bed is constructed, trimming processing is carried out to concrete squeezing sidewall face on the basis of it；
S5: one layer of antiseepage film is coated on concrete slab；
S6: foam is inserted in the bottom in gap, and places the second rubber bar at the top of foam；
S7: bituminizing Chinese fir board is placed in the top of the first rubber bar, and is placed at the top of bituminizing Chinese fir board
First rubber bar；
S8: waterstop is installed to the top of the first rubber bar, and with fixed plate, screw bolt and nut, by sealing
Band is stabilized in V-shaped groove, clears up waterstop surface dirt；
S9: filler, filler bulge landfill and molding are inserted on waterstop；
S10: in the top covered protection cover of waterstop, shield is simultaneously stabilized on concrete slab by bolt.
Specific in the present embodiment: the sealing piece is waveform shape；By the setting of sealing piece waveform, sealing is enhanced
Effect.
Specific in the present embodiment: the foam is polyurethane foam；Hard polyurethane foam is with isocyanates and to gather
Ether is primary raw material, under the action of a variety of auxiliary agents such as foaming agent, catalyst, fire retardant, is mixed by special equipment, through high pressure
High molecular polymer made of foam-in-place is sprayed, polyurethane foam has soft bubble and two kinds of hard bubble, and soft bubble is open-celled structure, and hard bubble is
Hole-closing structure；Soft bubble is divided into skinning and not two kinds of skinning again.
Specific in the present embodiment: the shield is semicircular structure；By the setting of shield, convenient for filler is filled out
Enter in gap.
It is specific in the present embodiment: to dig disconnected depth and be not less than 150cm, seam bottom width degree is not less than 25cm, and seam width is not
Less than 500cm.
It is specific in the present embodiment: S4 supplement the following steps are included:
After step 1), the trimming of extrusion side wall slope surface, pitch spraying machine from top to bottom starts to spray emulsified asphalt, first
An emulsified asphalt is sprayed in slope surface, second time emulsified asphalt of fill-before-fire after dry sheds sand, then sprays third all over cream
Change pitch, spills one layer of sand again in slope surface, emulsified asphalt is the solvent diluting emulsion that bitumen content is 60%；
Step 2), the every block concrete slab reinforcement of field fabrication, the connector of concrete slab reinforcing bar are straight using ripping rib and rolling depressing
Screw shell connection；Reinforcing bar two ends are machined to screw-type with dedicated thread, and is covered and is protected with rigid plastics.
Specific in the present embodiment: the filler is GB plastic filler, and the area of filler is 1410 square centimeters.
Specific in the present embodiment: the antiseepage film is PVC smooth surface antiseepage film, the formula that stops dropping relaxation, >=50 milli of degree of having more than needed
Rice；Antiseepage film title be polyethylene film for earthwork, mainly translucent to the opaque thermoplastic resin material of milky with
Polyvinyl resin is made, and polyethylene is high molecular polymer, is nontoxic, tasteless, odorless white particle, and fusing point is about
110 DEG C -130 DEG C, relative density 0.918-0.965；Antiseepage film has good heat resistance and cold resistance, and chemical stability is good,
Rigidity and toughness with higher, mechanical strength is good, and resisting environmental stress and cracking is good with tear-resistant strength character, upper with density
It rises, mechanical performance and barrier property can correspondingly increase, and heat-resisting and tensile strength is also higher；It can the corruption such as acid and alkali resistance, organic solvent
Erosion.
In the present embodiment, specific: the bottom of the antiseepage film is equipped with closure PVC sleeve；PVC sleeve, which has, meets
The specific function of thermal contraction, 98 DEG C of heating or more is i.e. shrinkable, easy to use.
In the present embodiment, first seam to be processed is checked, and whether the treatment measures of the clearly seam can be to other portions
Position has an adverse effect, secondly, the concrete surface of this seam of palpus wire brushing, removes grease stain, the mortar of concrete surface
Skin and sundries, again, along seam middle line according to the size positions underlining of design drawing, later, along this line according to the ratio of 1:1
Example chisel is handled at " V " type groove, and using electric angle grinder to concrete surface there are polishing at Asperity model and faulting of slab ends, cleaning is mixed
Solidifying soil surface scum and loose material, then remove surface dust with cotton yarn or hairbrush and swim, joint concrete surface must be smooth, close
In fact, the defects of must not having leakage muscle, voids and pits, peeling, dusting and loosening, 2m long allow to rise and fall difference for 5mm, and it is uniformly flat to rise and fall
It is suitable, such as concrete surface will lead to sealing and generates after the installation is completed and ask around infiltration there are spillage, voids and pits, dusting, loosening
The defect of topic, the processing of Ying Caiyong polymer mortar, last opposite joint face are checked, and guarantee that concrete surface is clean, dry.
In the present embodiment, along the seam uniform brushing primer in two sides, it is unable to holiday, concrete surface must be clean, dry, mixed
Solidifying soil first of primer of external coating, primer brushing width should be at fixed flat steels；After primer is dry (1h or more), the 2nd SR is brushed
Road primer waits primers surface drying (touch with one's hand, do not touch with one's hand, about 0.5h), can carry out plastic filler filleting construction；If primer is excessively dry
When dry (tack-free), need to mend brush primer again.It must assure that Nian Jie with concrete surface close.
In the present embodiment, after SR primer is dry, one layer of plastic sealing material is pasted in slot bottom, it will using tack of materials
PVC rubber bar is fixed on slot bottom, and PVC bar wall and seam wall answer panelling, and PVC stick connector should be fixed, prevent from misplacing, PVC
Connection between stick is attached using the method for dislocation lap joint at the scene.
In the present embodiment, wave can be carried out after the completion of rubber bar and corrugated rubber sealing lower part filling and pointing in " V " type groove
The installation of line rubber water-proof, it is first that its removing surface is clean before carrying out installation ripple waterstop；After wiped clean
Concrete surface brushing primer after, by the bonding partially of corrugated seal belt composite plastic material sealing rod on concrete surface,
Then it is risen in concrete surface and successively spreads PVC press strip from bottom to up, ripple waterstop and composite water-stop item are set up and accomplished fluently in advance
The band steel in hole is punched on concrete surface with impact drill through the hole above band steel, and punching spacing is 40cm, and punching depth is not
Less than 75mm, the size in hole is 10mm, the dust on concrete is removed to clean, loading expansion bolt, and fasten after pore-forming, makes
It combines closely between PVC press strip and concrete surface.
In the present embodiment, plasticity filler construction principle: in first stitching, rear seam is outer, first both sides, rear intermediate；Plastic filler is applied
Work basal plane must be solid, dry；After plastic filler is constructed, it must be protected, avoid mechanically actuated；After primer surface drying,
Plastic filler is twisted into small item and pressed and pinches into thick 10mm or so pancake shape, on concrete joint face, is pressed from seam is intermediate to both sides
3~5mm thickness material screed-coat is pasted to cover plate width.When stickup filler along its length, progressive from one end to the other side to paste simultaneously
Pressurization, it should be noted that its air between concrete surface is discharged, to enhance bond effect, pressurization can be by hand and by rubber
Hammer carries out, and to ensure filler and concrete surface tight bond, segmentation is constructed from below to up, and should be complete before panel water blocking
At filling construction preferably carries out on daytime 5 DEG C high, without rain in daily mean temperature, should be by the end of seam when stage construction plastic filler
It is sealed.
In the present embodiment, the separate paper of packaging is torn when construction off, first fill out filler in V-arrangement slot bottom, pressurization is allowed to viscous
Patch securely, is then pasted in layer again, and closely knit, side adhesive rim exhaust is pasted from middle part to both sides, between filler connector mutually
Overlap joint, makes to be connected as closely knit entirety between filler and interface, makes Simple steel structure mold according to bulge structure size, will only
After the cutting into strips of water material, stacks molding in a mold, utilize jack extrusion molding；It utilizes and adds in advance at the construction field (site)
The plastic filler bulge of work forming is placed directly in the V-groove top filled and led up, and gas is discharged by modes such as manual compressions,
It is allowed to paste with lower material close.
In the present embodiment, antiseepage cover plate is gradually spread out, the anti-sticking protection sheet on removing face, along reserved slot by antiseepage cover plate
It is pasted on plastic material, firmly lose no time from cover plate middle part to both sides air, is beaten in fact with rubber hammer, makes cover plate and filler, lid
Piece and two sides basal plane paste it is closely knit, for the position that needs that overlapped, it is necessary to do screed-coat with plastic material, and the lap of splice is wanted
Greater than 20cm, overlapping part first brushes mating primer, then is overlapped.
In the present embodiment, antiseepage passings: antiseepage passings length is 20cm~40cm, and in lap segment antiseepage lid
On piece first brushes mating primer, after primer surface drying, then carries out overlap joint stickup, and for the various opposite sex, such as " T ", Y-shaped, "+" type are connect
Head provides approved product by producer, directly pastes overlap joint at the construction field (site)；Using electric impacting drilling holes, hole depth
10cm, aperture 15mm, spacing 15cm are filled two component of HK981 type Anchor Agent A, B using accumulated powder in high-pressure blast cleaning hole respectively
Divide stirring, make it uniformly, mixture proportion is A:B=4:1 (mass ratio), Anchor Agent is perfused in hole using filleting rifle, conduit is inserted
Enter bottom hole, be perfused by bottom hole, is conducive to air discharge, perfusion volume is about the 2/3 of pore volume.Bolt surface is removed
Rust processing, it is clean with alcohol wipe, and buried depth is marked, it is inserted into bolt, Anchor Agent will expire to aperture, and Anchor Agent can not during solidifying
Disturbance, specific time field test determines, finally tightens bolt, is fixed cover plate by band steel.
In the present embodiment, the flat guiding principle (60*6mm) after punching (spacing 15cm) is placed on cover plate and is positioned, by riding
Hole punching is first drilled on cover plate using punch before with expansion bolt fixed flat steel, is then beaten on concrete with electric hammer
Concrete powder is removed with pressure wind after pore-forming in hole, and the naturally flat microdilatancy type cement paste of W/C < 0.35 is perfused in hole, it
After be put into expansion bolt, and expansion bolt is fastened before cement paste loses flowability, tightening for expansion bolt should divide for three phases
Carry out, second with first time fastening time interval is 7 days, last time fastening should overlay clay or powder fine sand bedding and
It is carried out before lower lock water storage, each position 10cm of the concrete at antiseepage cover plate edge and periphery is polished with coarse sand skin and wire brush and is done
Only, and removing is drifted along, and keeps basal plane dry；HK rigidity edge sealing is scratched along the painting brush brushing of antiseepage cover plate both sides of edges or with scraper
Adhesive pays attention to scratching edge sealing agent on two flank side of antiseepage cover plate, two flank sides is bonded on concrete surface, it is desirable that packet
Reinforcing rib, edge sealing width G T.GT.GT 100mm are covered, antiseepage cover plate after the installation is completed should closely be tied with plastic filler and concrete surface
It closes, must not there is phenomenon of coming to nothing, band steel securely will guarantee to form seal cavity between cover plate and concrete to the anchor pressure of cover plate.
In the present embodiment,
1, to keep concrete surface dry in work progress, rainy day construction need to take shielding measure, otherwise should not construct.
If 2, requirement of engineering is constructed in the rainy day, need to build rain-proof shelter above construction part, blocks construction surface
Circulating water, then the concrete surface constructed will be needed to dry with blowtorch, then construct by above-mentioned operational procedure.
3, according to the requirement of the construction speed at scene, construction personnel is grouped 5~6 people/group, basal plane cleaning is each responsible for, cuts
Material is cut, pointing material and surface cover antiseepage cover plate, to guarantee progress and quality.
4, plastic filler bulge is examined: after the completion of material pointing, with 10m for one section, checking that it gathers ruler with mold slide calliper rule
It is very little whether to meet design requirement.
5, with mono- section of 100m, filler bulge is cut and checks whether sealing material and concrete surface cohere securely, filler
Whether fill closely knit.Such as have that size is undesirable or the poor position of bond quality, then reworked processing.
6, the pointing size of sealing material, the bond quality with concrete surface can be in sealing materials after qualified by inspection
Expect that antiseepage protective cover sheet is installed on bulge surface.
7, sealing material and antiseepage cover plate, not tear separate paper when unused, to prevent material surface to be contaminated,
Influence using effect.
8, the key of wave sealing belt construction is that waterstop is smooth, and the quality of connection of connector is reliable.Due to entire week
Side seam water stopping trough has many places turnover, and for transition location, directly construction will cause waterstop to distort, and has shadow to the construction of later period filler
It rings.In the rotation angle position of periphery fissure when constructing thus, according to the Angular Dimension at the position, using the bend connector customized in advance,
To guarantee that sealing reaches design requirement.After expansion bolt is tightened, the Luo bar saw that nut top is exposed should be fallen, in case it pokes table
Layer antiseepage cover plate.The installation of corrugated seal belt need to be carried out according to the requirement of design drawing, the peace of waterstop center line and design lines
Dress tolerance is ± 5mm.
9, joint seal professional construction group is set up, carry out system professional training, takes appointment with certificate before constructing, and establishes corresponding
Economic responsibility system.Be on duty personnel's irresponsibility, the person of being careless in one's work, replacement in time or laid-off, the strictly reinforcement pair from construction organization
The management of joint seal construction.
10, reinforce sealing piece raw material quality examination, it is underproof forbid using.
11, reinforce field management and supervision, improve processing quality.Rubber water-proof belt lacing presses relevant design requirement respectively
It tests.Rubber fastening band is conscientiously installed by the control point of measuring, guarantees that position is accurate, it is rationally secured to reinforce；It is small when installation
The heart is careful, handles with care, avoid with the collision such as reinforcing bar, template, squeeze, to prevent waterstop scratch；After installing, in time by sealing
Piece band is cleaned out.
12, reinforce the protection of waterstop, it is ensured that sealing is intact.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of dam face slab joint seal construction technology, which comprises the following steps:
S1: disconnected digging extrusion side wall along concrete slab vertical lap seam direction；
S2: periphery fissure crack gauge is installed on bracket, and measures the width of the depth in gap, the width of gap bottom and sealing
Degree clears up seam face；
S3: in concrete squeezing sidewall slope surface, the position of concrete slab vertical lap seam and the range of mortar bed is determined, iron is used
Pricker raggle in range is laid with the mortar bed of M20；
S4: after vertical lap seam mortar bed is constructed, trimming processing is carried out to concrete squeezing sidewall face on the basis of it；
S5: one layer of antiseepage film is coated on concrete slab；
S6: foam is inserted in the bottom in gap, and places the second rubber bar at the top of foam；
S7: bituminizing Chinese fir board is placed in the top of the first rubber bar, and places first at the top of bituminizing Chinese fir board
Rubber bar；
Waterstop: being installed to the top of the first rubber bar, and with fixed plate, screw bolt and nut by S8, and waterstop is steady
Gu clearing up waterstop surface dirt in V-shaped groove；
S9: filler, filler bulge landfill and molding are inserted on waterstop；
S10: in the top covered protection cover of waterstop, shield is simultaneously stabilized on concrete slab by bolt.
2. a kind of dam face slab joint seal construction technology according to claim 1, it is characterised in that: the sealing piece is
Waveform shape.
3. a kind of dam face slab joint seal construction technology according to claim 1, it is characterised in that: the foam is poly-
Urethane foam.
4. a kind of dam face slab joint seal construction technology according to claim 1, it is characterised in that: the shield is
Semicircular structure.
5. a kind of dam face slab joint seal construction technology according to claim 1, it is characterised in that: the filler is GB
Plastic filler, the area of filler are 1410 square centimeters.
6. a kind of dam face slab joint seal construction technology according to claim 1, it is characterised in that: the antiseepage film is
PVC smooth surface antiseepage film, the formula that stops dropping relaxation, >=50 millimeters of degree of having more than needed.
7. a kind of dam face slab joint seal construction technology according to claim 1, it is characterised in that: the antiseepage film
Bottom is equipped with closure PVC sleeve.
8. a kind of dam face slab joint seal construction technology according to claim 1, it is characterised in that: it is not small to dig disconnected depth
In 150cm, stitches bottom width degree and be not less than 25cm, seam width is not less than 500cm.
9. a kind of dam face slab joint seal construction technology according to claim 1, it is characterised in that: S4 supplement include with
Lower step:
After step 1), the trimming of extrusion side wall slope surface, pitch spraying machine from top to bottom starts to spray emulsified asphalt, first on slope
An emulsified asphalt is sprayed on face, second time emulsified asphalt of fill-before-fire after dry sheds sand, then sprays third all over emulsification drip
Blueness, spills one layer of sand again in slope surface, and emulsified asphalt is the solvent diluting emulsion that bitumen content is 60%；
Step 2), the every block concrete slab reinforcement of field fabrication, the connector of concrete slab reinforcing bar use peel rolled straight thread
Sleeve connection；Reinforcing bar two ends are machined to screw-type with dedicated thread, and is covered and is protected with rigid plastics.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709195A (en) * | 2020-12-28 | 2021-04-27 | 国网福建省电力有限公司电力科学研究院 | Method for water-stopping repair and cavity backfill of concrete panel structure joint of rock-fill dam |
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