CN207537972U - Cemented gravel dam antiseepage drainage system - Google Patents
Cemented gravel dam antiseepage drainage system Download PDFInfo
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- CN207537972U CN207537972U CN201721398968.XU CN201721398968U CN207537972U CN 207537972 U CN207537972 U CN 207537972U CN 201721398968 U CN201721398968 U CN 201721398968U CN 207537972 U CN207537972 U CN 207537972U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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Abstract
A kind of cemented gravel dam antiseepage drainage system, has：Upstream impervious barrier, set on the upstream of cemented gravel dam, paste the entire upstream dam facing of covering, the upstream impervious barrier is along axis of dam direction, several pieces are cut by transverse joint, transverse joint position is equipped with water sealing structure, and at least part of the water sealing structure is set on the surface of upstream impervious barrier, and the material of the upstream impervious barrier starches vibrate cement sand and gravel or rich slurry cement sand and gravel to add；And drainage blanket, set on the downstream side of the upstream impervious barrier of cemented gravel dam, the adjacent upstream impervious barrier, the downstream side of the drainage blanket along axis of dam direction, is provided with drainpipe, will transmit through the percolating water discharge of upstream impervious barrier.The utility model causes more economical cemented gravel dam, environmental protection and meets high engineering design requirement（More than compression strength 20MPa, it is freeze proof to meet F300, impervious more than W10）, convenient construction is quick, can effectively improve dam body seepage and dam internal drainage effect, the perfect design method of cemented gravel dam.
Description
Technical field
The utility model is related in a kind of cemented gravel dam antiseepage drainage system, especially hydraulic and hydroelectric engineering field one
The whole series are used for the dam body seepage of cemented gravel dam and dam internal drainage system.
Background technology
Cement sand and gravel dam construction technique can make full use of local material, according to different material properties by adjusting dam body knot
Structure and subregion have the advantages such as economy, safety, the quick, environmental protection of construction, have obtained field of water conservancy to meet the requirement built a dam
Attention.Currently, China has the temporary projects such as more cement sand and gravel cofferdam and permanent works uses cement sand and gravel technology.
The technology has fabulous promotional value.However the technology is promoted, it needs to solve the weakness of its own：With normal concrete
Dam is compared, and the gel material content of cemented gravel dam is few, the strength of materials is relatively low, prolonged permeation corrosion to the strength of materials and
Durability has certain influence, to ensure safety, needs to carry out dam body seepage and dam internal drainage.
At present, cement sand and gravel there is no special antiseepage water discharge technology, and antiseepage, transverse joint sealing, Drainage Design are mainly joined
RCC dam is examined, in upstream face using normal concrete layer, transverse joint sealing is embedded in inside impervious barrier, using pipe of concrete
Draining.But cement sand and gravel intensity is relatively low, and using normal concrete impervious barrier or concrete slab antiseepage, there are binding sites
Stress gradient is big, the problem of may disengaging.Meanwhile the sealing inside impervious body is embedded in, construction is inconvenient, and maintenance is complicated, damage
Shi Buyi has found specific location.Certainly, in order to avoid this problem, the antiseepage of cemented gravel dam can also use for reference the anti-of rock-fill dams
Technology is oozed, using geomembrane anti-seepage, but this kind of seepage control technique is difficult to control there are construction quality, destroys to be difficult to repair etc. and ask again
Topic.Meanwhile there are engineering cost is higher, welding, durability using the cemented gravel dam of above-mentioned traditional impervious form
Difference, the shortcomings of construction speed is slow.
Utility model content
For above-mentioned engineering problem, in order to meet the needs of cemented gravel dam, the utility model combination cement sand and gravel
The characteristics of dam, according to experiment and engineering practice, it is proposed that a kind of cemented gravel dam antiseepage drainage system, especially a whole set of use
In the technical method of cemented gravel dam dam body seepage, transverse joint sealing and dam internal drainage design, meet the anti-of cemented gravel dam
Drainage requirement is blended, overcomes impervious barrier and the discontinuous shortcoming of cement sand and gravel material property, and construction is simple, reliability
Height facilitates management, for ease of maintenaince.The perfect detail structure design of this new dam type of cemented gravel dam, make up it is domestic and international this
The blank in one field.
The utility model builds safe and reliable dam body seepage, transverse joint according to the not impervious consideration of cement sand and gravel inside dam body
Sealing and dam internal drainage system, to ensure that dam body is internally dry.To reach the purpose, the utility model is realized in this way：
A kind of cemented gravel dam antiseepage drainage system, has：
Upstream impervious barrier set on the upstream of cemented gravel dam, pastes the entire upstream dam facing of covering, the upstream impervious barrier edge
Axis of dam direction is cut into several pieces by transverse joint, and transverse joint position is equipped with water sealing structure, and at least part of the water sealing structure is set on
The surface of upstream impervious barrier, the material of the upstream impervious barrier starch vibrate cement sand and gravel or rich slurry cement sand and gravel to add；And
Drainage blanket, set on the downstream side of the upstream impervious barrier of cemented gravel dam, the adjacent upstream impervious barrier, the drainage blanket
Downstream side, along axis of dam direction, be provided with drainpipe, will transmit through upstream impervious barrier percolating water discharge.
In one embodiment of the utility model, also there is downstream impervious barrier, set on the most downstream of cemented gravel dam,
Paste the entire downstream dam facing of covering.
In one embodiment of the utility model, the overall structure of the downstream impervious barrier is identical with upstream impervious barrier.
In one embodiment of the utility model, the thickness of the downstream impervious barrier is less than the thickness of upstream impervious barrier.
In one embodiment of the utility model, the thickness of upstream impervious barrier is 1.0-3.0m.
In one embodiment of the utility model, the material of the downstream impervious barrier it is identical with the material of upstream impervious barrier or
It is different.
In one embodiment of the utility model, further include collector drain, through upstream impervious barrier percolating water by arranging
Water pipe is discharged into inflow collector drain.
In one embodiment of the utility model, the dam body of the cemented gravel dam is rolls cement sand and gravel.
In one embodiment of the utility model, gel material content in the rich slurry cement sand and gravel for 150 ~
250Kg/m3, air content is at least up to 5%, and workability is dry or low flow regime plasticity.
In one embodiment of the utility model, it is described plus slurry vibrate cement sand and gravel be in sandstone add in 0.6 ~ 1.0
The mortar of nargin then vibrates to closely knit, its workability from dry, roller compaction construction is made to become having slump, can vibrate and apply
The workability of work, wherein, described plus slurry cement sand and gravel of vibrating includes：
90 ~ 120 parts of water, 80 ~ 120 parts of cement, 90 ~ 150 parts of flyash, 400 ~ 700 parts of sand and 1400 ~ 1800 parts of stones.
In one embodiment of the utility model, the doping quantity of fly ash in the rich slurry cement sand and gravel is 30 ~ 40%（Matter
Amount）, water-cement ratio is 0.50 ~ 0.55.
In one embodiment of the utility model, the mortar refers to the gel material that the material mixing matched as follows forms
Slurry liquid：450 ~ 500 parts of water, 400 ~ 700 parts of cement and 500 ~ 800 parts of flyash.
In one embodiment of the utility model, described plus slurry, which vibrates, further includes 0.85 ~ 2.43 part of height in cement sand and gravel
Imitate water-reducing agent, 0.034 ~ 0.216 part of air entraining agent.
In one embodiment of the utility model, the water sealing structure of transverse joint position is surface transverse joint sealing form,
I.e. it includes the sealing material set on upstream antiseepage layer surface.
In one embodiment of the utility model, which is adhesive in upstream antiseepage layer surface.
In one embodiment of the utility model, the sealing material include copper sheet, steel plate, aluminium flake or sheet rubber, when for
During sheet rubber, the sealing of transverse joint is provided with the support element for supporting the sheet rubber, to prevent sheet rubber deformation into seam.
In one embodiment of the utility model, the drainage blanket includes non-fine concrete drainage blanket, including along upstream
If the non-fine concrete abutment wall of the semi-transparent water in arterial highway that dam facing is stacked（These non-fine concrete abutment walls cause non-fine concrete to arrange
Water layer is formed towards the downstream side inside dam body falls from power stepped, and causes non-fine concrete drainage blanket towards the upstream outside dam body
It is close to upstream impervious barrier side）.
In one embodiment of the utility model, the drainpipe is set on the certain of the downstream side of non-fine concrete drainage blanket
It in distance, is parallel to upstream dam facing and vertically sets, which includes prefabricated sand-free concrete tube or PE floral tubes.
In one embodiment of the utility model, 8 ~ 10cm of top width of the non-fine concrete abutment wall, 70 ~ 80cm of bottom width,
Thickness and the cement sand and gravel of dam body roll that thickness is identical, the parameter of non-fine concrete material used for：Dry density >=
2.0g/m3, infiltration coefficient 1 × 10-3~1×10-4Cm/s, 3000 ~ 5000MPa of elasticity modulus, 3 ~ 5MPa of compression strength.
In one embodiment of the utility model, the drainpipe in the downstream side of non-fine concrete drainage blanket 0.1 ~
The location arrangements of 0.5m, pipe away from 2.0 ~ 3.0m, wherein, PE floral tube outsourcing brown paper, the internal diameter of prefabricated sand-free concrete tube is
0.10 ~ 0.15m, 5 ~ 7cm of thickness of pipe wall.
The utility model passes through the innovation to cemented gravel dam routine antiseepage layer model, it is proposed that more economical, environmental protection
And meet high engineering design requirement（More than compression strength 20MPa, it is freeze proof to meet F300, impervious more than W10）, convenient construction is fast
The new-type antiseepage layer material and drainage measure of speed.Dam body seepage and dam internal drainage effect can be effectively improved, perfect gelling sand
The design method on gravel dam.
Richness slurry cement sand and gravel and abnormal cement sand and gravel do not set temperature steel, can be convenient for the water obtained with utilizing works scene
Mud, flyash, water have good rheological characteristic, volume stability and education resistance.There are higher intensity and change after grout cures
Shape performance.
In the utility model be applied to cemented gravel dam transverse joint water sealing structure, be arranged on impervious barrier upstream face, with
It is compared toward the water sealing structure being arranged on inside impervious barrier, it is convenient, cost-effective, convenient convenient for lookup defect, maintenance with constructing
The advantages that, greatly improve the effect of antiseepage.
In addition used in the utility model to rich slurry cement sand and gravel plus slurry vibrate cement sand and gravel, without sand coagulation
Soil, PE floral tubes are energy conservation and environmental protection material, have construction is simple, are suitble to mechanized construction, speed of application is fast, and low cost etc. is excellent
Point.
Description of the drawings
Fig. 1 is the partial structural diagram of the cemented gravel dam antiseepage drainage system of the utility model one embodiment
（A part for the cross section for being perpendicular to the axis of dam drawn）；
Fig. 2 is the partial structural diagram of the cemented gravel dam antiseepage drainage system of the utility model one embodiment
（The main junction for showing upstream impervious barrier or protective layer and cement sand and gravel dam body）；
Fig. 3 is the partial structural diagram of the cemented gravel dam antiseepage drainage system of the utility model one embodiment
（The main transverse joint water sealing structure for showing upstream impervious barrier）；
Fig. 4 is the overall structure diagram of the cemented gravel dam antiseepage drainage system of the utility model one embodiment.
【Main element meets explanation】
10th, cemented gravel dam
11st, upstream impervious barrier 12, downstream impervious barrier
13rd, drainage blanket 14, drainpipe
15th, gallery 16, rolling layers
21st, sealing material 22, cement mortar
23rd, 24 glue of high density polyethylene (HDPE) closed pore plate.
Specific embodiment
In order to preferably explain the utility model, in order to understand, below in conjunction with the accompanying drawings by specific embodiment to this
Utility model is described in detail.
The main design thought of the utility model is：
Referring to Fig. 1 and Fig. 2, in the most upstream of cemented gravel dam 10, cover entire upstream dam facing and paste one layer of upstream and prevent
Infiltration layer 11.Cement sand and gravel that this layer of upstream impervious barrier 11 uses plus slurry vibrates or rich slurry cement sand and gravel.11 edge of upstream impervious barrier
Axis of dam direction, is cut by transverse joint, needs to set water sealing structure on transverse joint.In the most downstream side of cemented gravel dam 10,
Setting is similar to the downstream impervious barrier 12 of upstream face, but the thickness ratio upstream side of downstream side impervious barrier is thin.
In the downstream side of the upstream impervious barrier 11 of cemented gravel dam 10, and then impervious barrier sets non-fine concrete draining
Layer 13.In the downstream side of drainage blanket 13, along axis of dam direction, drainpipe 14 is arranged at a certain distance（Such as prefabricated non-fine concrete
Pipe or PE floral tubes）.It is spent through the percolating water of impervious barrier by non-fine concrete drainage blanket 13, prefabricated sand-free concrete tube or PE
Pipe, is pooled to collector drain 15, sump etc., then concentrates discharge dam body.
Specifically, the anti-making material for blending drainage system or tectonic sieving are as follows：
（1）Impervious barrier
The special impervious barrier of cement sand and gravel according to making material difference, can be divided into rich slurry cement sand and gravel impervious barrier and change
State cement sand and gravel（Slurry is added to vibrate cement sand and gravel）Impervious barrier.
1. richness slurry cement sand and gravel antiseepage：
In the upstream and downstream face on dam using rich slurry cement sand and gravel as impervious barrier.Richness slurry cement sand and gravel is referred to original
On the basis of cement sand and gravel gel material content, increase gel material content.Specifically, gel material content can be increased
To 150-250kg/m3, to obtain the rich slurry cement sand and gravel for meeting seepage prevention design requirement；Or by using efficient additive
With change water consumption, match ratio is changed, according to the size of clay content in sand gravel material, air content is made to be at least up to 5%, is obtained rich
Starch cement sand and gravel.Its workability can be dry either low flow regime plasticity, to be conducive to the continuous of on-site rolling construction
Property and convenience.Maximum particle diameter 150mm, mix-design index are C9025W908F90200, the strength factor of assurance >=85%, water-cement ratio
0.50-0.55, doping quantity of fly ash 30%-40%.
Antiseepage layer thickness made of richness slurry cement sand and gravel is 1.0 ~ 3.0m.
Abnormal cement sand and gravel（Slurry is added to vibrate cement sand and gravel）Antiseepage：
During making is gelled manual sandstone, added in upstream face thickness is the gelling manual sandstone in 1.0-3.0m
Nargin is the mortar of 0.6-1.1, is then vibrated with vibrating spear to closely knit.It is mainly characterized by by suitable cementitious material slurries with
Certain proportion is added in cement sand and gravel, its workability from dry, roller compaction construction is made to become having slump, can vibrate construction
Workability, well-mixed metamorphosis cement sand and gravel can meet the design requirement of cement sand and gravel dam body impervious barrier.This change
State cement sand and gravel, including 90-120 parts of water, 80-120 parts of cement, 90-150 parts of flyash, 400-700 parts of sand, 1400-1800
Part stone.Glue material Mortar mix proportion is using 500-800 parts 450-500 parts of water, 400-700 parts of cement of flyash, mixing slurries.For
Improve workability and mobility, abnormal cement sand and gravel further include 0.85-2.43 parts of high efficiency water reducing agents, 0.034-0.216 parts draw
Gas agent.
Add the slurry Novel seepages materials such as cement sand and gravel, rich slurry cement sand and gravel that vibrate impervious etc. through inventor's experimental study
Grade is W10, and freeze proof is F300, and intensity, durability are satisfied by as dam body protective layer material requirement.
（2）Transverse joint water sealing structure
Referring to Fig. 3, using surface transverse joint sealing form, copper sheet, steel plate, aluminium flake or rubber can be selected in sealing material 21
Piece, sealing both ends glue 24 are pasted onto at antiseepage layer surface.When selecting rubber water-proof, because sheet rubber flexibility is larger, in sealing
Easy rheology and destroy, therefore round steel pipe or rubber tube are set preferably at sealing, in the middle part of support rubber water-proof piece, prevent it in water lotus
It is conjugated under load effect towards seam direction.When selecting copper sheet, can in transverse joint by near surface side filling concrete mortar 22, and
Close to the side filling high-density polyethylene closed pore plate 23 of cemented gravel dam 10.
（3）Drainage system
The downstream side arrangement drainage system of impervious barrier in dam body upstream, mainly including following two parts：
Non-fine concrete drainage blanket.The forward position up stream slope face axis of dam side that bedding material fills each layer of upstream section side
Half permeable non-fine concrete abutment wall, as non-fine concrete drainage blanket 13 together are molded to BJY-40 type squish lips wall telephone,
16 thickness of rolling layers of the cement sand and gravel of every layer of non-fine concrete abutment wall top width 8-10cm, bottom width 70-80cm, thickness and dam body
It is identical；It is filled out on the inside of it by design requirement paving after non-fine concrete solidification and rolls cement sand and gravel material with vibrating roller, until this
Layer cement sand and gravel material carries out next layer of construction with same process again after rolling qualification.The design technical parameter of side wall concrete
For：Dry density >=2.0g/cm3, infiltration coefficient 1 × 10-3-1×10-4Cm/s, elasticity modulus 3000-5000MPa, compression strength 3-
5MPa。
Vertical drainage pipe 14 in dam is set after non-fine concrete drainage blanket, and direction is parallel with upstream dam facing.Drainpipe 14
For prefabricated sand-free concrete tube or PE floral tube outsourcing brown paper.Specifically, drainpipe 14 is after non-fine concrete drainage blanket 13
The location arrangements of 0.1-0.5m, pipe is away from 2.0-3.0m.The internal diameter of wherein prefabricated sand-free concrete tube is 0.10-0.15m, wall thickness 5-
7cm.Infiltration flows into collector drain 15 by drainpipe 14.
To reduce construction interference, operation side is increased, for middle weir（Less than 30m）It can not set or only set one
Gallery and multiple use, i.e., only set foundation grouting gallery, and plays draining, inspection and a traffic and be used.
Below in conjunction with attached drawing 4, a kind of cemented gravel dam antiseepage drainage system provided by the utility model is made detailed
It illustrates.
Example：The antiseepage on certain 50.6m high gelling gravel sand dam, drainage system.
It includes following components：
1）Dam body seepage
The dam is located at cold district, considers that the anti-corrosion performance of cemented gravel dam and freeze-thaw resistance are poor, needs to set
Anti- to blend protective layer, this engineering is only set up defences infiltration layer, has protective layer effect concurrently.It is designed by head, antiseepage layer thickness is the 1/ of head
30~1/60, while consider deicing requirements, upstream face is using the thick rich slurry cement sand and gravel impervious barriers of 1.5m, water-cement ratio 0.50, powder
Coal ash volume 40%.
2）Transverse joint sealing
Relative displacement in view of cemented gravel dam seam both sides dam body is smaller, and using copper sheet sealing, sealing is along the axis of dam
Direction 40~50cm of length, both sides are securely pasted onto on impervious body with glue, and sealing is downwardly into the dam foundation about 30~50cm, upwards
It extends on peak level.Upstream and downstream transverse joint sealing uses identical design principle.
3）Dam internal drainage and gallery
In order to reduce uplift pressure in dam body, close to setting non-fine concrete drainage blanket after dam body upstream face impervious barrier, arrange
Water layer is constructed step by step, and filling-up thickness is 750mm with rolling consistency of thickness.Non-fine concrete row is laid after drainage blanket at 0.1m
Water pipe or PE floral tube outsourcing brown paper, until basic gallery, the interior setting sump of gallery, sump installation suction pump, periodically by water
It discharges outside dam.By comparative study, determine drainpipe using PE floral tube outsourcing brown paper, caliber 150mm, spacing 3m.
The above is only the preferred embodiment of the utility model, not makees limit in any form to the utility model
System, it is every according to the technical essence of the utility model to above example made it is any it is simple modification, split, equivalent variations with
Modification still belongs to the protection domain of technical solutions of the utility model.
Claims (9)
1. a kind of cemented gravel dam antiseepage drainage system, which is characterized in that it has：
Upstream impervious barrier set on the upstream of cemented gravel dam, pastes the entire upstream dam facing of covering, and the upstream impervious barrier is along dam axis
Line direction is cut into several pieces by transverse joint, and transverse joint position is equipped with water sealing structure, and at least part of the water sealing structure is set on upstream
The surface of impervious barrier, the material of the upstream impervious barrier starch vibrate cement sand and gravel or rich slurry cement sand and gravel to add；And
Drainage blanket, set on the downstream side of the upstream impervious barrier of cemented gravel dam, adjacent upstream impervious barrier, under the drainage blanket
Side is swum, along axis of dam direction, is provided with drainpipe, will transmit through the percolating water discharge of upstream impervious barrier.
2. cemented gravel dam antiseepage drainage system as described in claim 1, it is characterised in that：
Also there is downstream impervious barrier, set on the most downstream of cemented gravel dam, paste the entire downstream dam facing of covering.
3. cemented gravel dam antiseepage drainage system as claimed in claim 2, it is characterised in that：
The overall structure of the downstream impervious barrier is identical with upstream impervious barrier.
4. cemented gravel dam antiseepage drainage system as claimed in claim 2, it is characterised in that：
The thickness of the downstream impervious barrier is less than the thickness of upstream impervious barrier；
The thickness of upstream impervious barrier is 1.0-3.0m.
5. cemented gravel dam antiseepage drainage system as claimed in claim 2, it is characterised in that：
The material and the material of upstream impervious barrier of the downstream impervious barrier are identical or different.
6. cemented gravel dam antiseepage drainage system as described in claim 1, it is characterised in that：
Collector drain is further included, inflow collector drain, also, the glue are discharged by drainpipe through the percolating water of upstream impervious barrier
The dam body of solidifying sand-gravel dam is rolls cement sand and gravel.
7. the cemented gravel dam antiseepage drainage system as described in claim 1,2,3,4,5 or 6, it is characterised in that：
The water sealing structure of transverse joint position is surface transverse joint sealing form, i.e., it includes the sealing set on upstream antiseepage layer surface
Material, which is adhesive in upstream antiseepage layer surface, and the sealing material includes copper sheet, steel plate, aluminium flake or sheet rubber,
When for sheet rubber, the sealing of transverse joint is provided with the support element for supporting the sheet rubber, to prevent sheet rubber deformation into seam.
8. the cemented gravel dam antiseepage drainage system as described in claim 1,2,3,4,5 or 6, it is characterised in that：
The drainage blanket includes non-fine concrete drainage blanket, if the nothing of the semi-transparent water in arterial highway including being stacked along upstream dam facing
Sand concrete abutment wall, these non-fine concrete abutment walls cause non-fine concrete drainage blanket to form towards the downstream side inside dam body
Step；
The drainpipe is set in the certain distance in the downstream side of non-fine concrete drainage blanket, is parallel to upstream dam facing and is vertically set
It puts, which includes prefabricated sand-free concrete tube or PE floral tubes.
9. cemented gravel dam antiseepage drainage system as claimed in claim 8, it is characterised in that：The non-fine concrete abutment wall
Non-fine concrete drainage blanket is made to be close to towards the upstream side outside dam body with upstream impervious barrier simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721398968.XU CN207537972U (en) | 2017-10-26 | 2017-10-26 | Cemented gravel dam antiseepage drainage system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721398968.XU CN207537972U (en) | 2017-10-26 | 2017-10-26 | Cemented gravel dam antiseepage drainage system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049370A (en) * | 2017-10-26 | 2018-05-18 | 中国水利水电科学研究院 | Cemented gravel dam antiseepage drainage system |
| CN112900369A (en) * | 2021-01-15 | 2021-06-04 | 东北大学 | Tailing storehouse row oozes reinforced structure |
| CN113186879A (en) * | 2021-05-25 | 2021-07-30 | 中水北方勘测设计研究有限责任公司 | Template-free roller compacted concrete dam rapid construction method capable of simplifying concrete temperature control |
-
2017
- 2017-10-26 CN CN201721398968.XU patent/CN207537972U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049370A (en) * | 2017-10-26 | 2018-05-18 | 中国水利水电科学研究院 | Cemented gravel dam antiseepage drainage system |
| CN108049370B (en) * | 2017-10-26 | 2023-12-08 | 中国水利水电科学研究院 | Seepage-proofing drainage system of gel sand gravel dam |
| CN112900369A (en) * | 2021-01-15 | 2021-06-04 | 东北大学 | Tailing storehouse row oozes reinforced structure |
| CN113186879A (en) * | 2021-05-25 | 2021-07-30 | 中水北方勘测设计研究有限责任公司 | Template-free roller compacted concrete dam rapid construction method capable of simplifying concrete temperature control |
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