CN208830256U - A kind of concrete dam grout curtain arragement construction - Google Patents
A kind of concrete dam grout curtain arragement construction Download PDFInfo
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- CN208830256U CN208830256U CN201821531398.1U CN201821531398U CN208830256U CN 208830256 U CN208830256 U CN 208830256U CN 201821531398 U CN201821531398 U CN 201821531398U CN 208830256 U CN208830256 U CN 208830256U
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- concrete dam
- dam body
- curtain
- weight plate
- grout curtain
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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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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Abstract
The utility model discloses a kind of concrete dam grout curtain arragement constructions, including basement rock, concrete dam body, grout curtain, collector drain, coagulation earth mulch weight plate is arranged in concrete dam body upstream side, coagulation earth mulch weight plate is placed on basement rock, copper water stop is set between coagulation earth mulch weight plate and concrete dam body, bituminous flax cord is filled among the copper lug of copper water stop, pitch high pressure closed pore plate is set between coagulation earth mulch weight plate and concrete dam body, coagulation earth mulch weight plate lower disposed grout curtain, drainage hole after the lower part setting curtain of collector drain in concrete dam body.It is placed in inside dam body compared with irrigation gallery with traditional grout curtain, drainage hole moves forward after grout curtain and curtain, so that grout curtain and dam construction interfere with each other reduction, the connection of copper water stop flexible structure, avoid influence of the tensile stress to grout curtain structure, downstream uplift pressure reduces, and corresponding reduction of seeping water substantially increases the structure safety of dam body.Structural shape is simple, easy to operate, and cost is lower, and easy to implement, and construction, maintenance are simple and convenient.
Description
Technical field
The utility model relates to a kind of leakage preventing structure, especially a kind of concrete dam grout curtain arragement construction.
Background technique
Heavy Curtain Grouting Technology is the important antiseepage means in construction of hydro project, and traditional grout curtain is inside dam body
Irrigation gallery is set, is then drilled using geological drilling rig to stratum in gallery, makes the drilling of suitable curtain, then to hole
Interior be perfused has the cement slurries of elevated pressures, and cement slurry can gradually penetrate into subterranean layer after being injected, be slowly solidified to together, by
The entirety of a solidification is gradually formed with drilling, bottom depth is gone directly inside formation, and water protecting curtain is ultimately formed.But due to arch dam
Narrower width, dam body is mainly by two sides spandrel stress, and majority can call in person on dam and generate Tension Stress Zone, and is compression in toe
Area, and Tension Stress Zone often causes dam lower concrete and basement rock to crack, and then leads to grout curtain body drawing crack, thus largely
Water and total head pressure import the dam foundation, dam body leak；In compressive region, then it can make the dam foundation is compressed to become more waterproof, from
And drainage efficiency is reduced, cause grout curtain under dam crack occur, downstream uplift pressure is increased sharply, and water percolating capacity increasing causes serious
Accident, French Malpasset arch dam because downstream uplift pressure too greatly caused by dam body have an accident.In addition grout curtain is generally in dam body
It is carried out in the irrigation gallery of setting, irrigation gallery construction is poured with dam body to intersect, and influences each other；Worker is in the milk in gallery
Operation, working environment are severe.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of concrete dam grout curtain arragement constructions, utilize
Grout curtain Forward solves dam body because the drawbacks of grout curtain is cracked caused by tensile stress.The structure does not influence dam body itself
Structure safety, it is thus also avoided that grout curtain crack caused by accident.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of concrete dam grout curtain
Coagulation earth mulch weight is arranged in arragement construction, including basement rock, concrete dam body, grout curtain, collector drain, concrete dam body upstream side
Pressing plate, coagulation earth mulch weight plate are placed on basement rock, copper water stop are arranged between coagulation earth mulch weight plate and concrete dam body, copper stops
Bituminous flax cord is filled among the copper lug of water piece, and pitch high pressure closed pore is set between coagulation earth mulch weight plate and concrete dam body
Plate, coagulation earth mulch weight plate lower disposed grout curtain, drainage hole after the lower part setting curtain of collector drain in concrete dam body.
The coagulation earth mulch weight plate thickness is not less than 3m.
The grout curtain is away from upstream dam facing 2.5-3m.
The collector drain is close to dam body downstream side.
The coagulation earth mulch weight plate is reinforced on basement rock by dowel.
A kind of concrete dam grout curtain method, comprising the following steps:
(1) the casting concrete dam body on the basement rock excavated, and form collector drain；
(2) when concrete dam body is poured away from basement rock 2.5m~3.0m, copper is set in concrete dam body upstream dam facing
Sealing piece fills bituminous flax cord in the copper lug of copper water stop；
(3) the casting concrete lid weight plate on the basement rock of concrete dam body upstream side, coagulation earth mulch weight plate and concrete
Dam body is connected by copper water stop, and pitch high pressure closed pore plate is arranged between coagulation earth mulch weight plate and concrete dam body；
(4) it when coagulation earth mulch weight plate intensity is greater than 80% design strength, is carried out in coagulation earth mulch weight plate lower part
The construction of grout curtain；
(5) after Curtain Grouting Construction finishes simultaneously passed examination, the drilling for carrying out drainage hole after curtain in collector drain is applied
Work.
The beneficial effects of the utility model are: prevent grout curtain crack leak, structure is easily operated, do not increase construction at
This, constructs more convenient.
Detailed description of the invention
Fig. 1 is the utility model concrete dam grout curtain arragement construction schematic diagram.
Fig. 2 is the utility model Copper water stop detail drawing.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description:
As shown in Figure 1, 2, the concrete dam grout curtain arragement construction of the utility model, including basement rock 3, concrete dam body
1, coagulation earth mulch weight plate 2 is arranged in grout curtain 9, collector drain 11,1 upstream side of concrete dam body, and coagulation earth mulch weight plate 2 is set
In on basement rock 3, copper water stop 5 is set, in the copper lug 6 of copper water stop 5 between coagulation earth mulch weight plate 2 and concrete dam body 1
Between fill bituminous flax cord 7, between coagulation earth mulch weight plate 2 and concrete dam body 1 be arranged pitch high pressure closed pore plate 8, coagulation earth mulch
The 2 lower disposed grout curtain 9 of weight plate, drainage hole 10 after the lower part setting curtain of collector drain 11 in concrete dam body 1.
2 thickness of coagulation earth mulch weight plate is not less than 3m.The grout curtain 9 is away from upstream dam facing 2.5-3m.The row
Water gallery 11 is close to dam body downstream side.The coagulation earth mulch weight plate 2 is reinforced on basement rock 3 by dowel 4.
Above-mentioned concrete dam Curtain Grouting Construction method, comprising the following steps:
(1) the casting concrete dam body on the basement rock excavated, and form collector drain；
(2) when concrete dam body is poured away from basement rock 2.5m~3.0m, copper is set in concrete dam body upstream dam facing
Sealing piece fills bituminous flax cord in the copper lug of copper water stop；
(3) the casting concrete lid weight plate on the basement rock of concrete dam body upstream side, coagulation earth mulch weight plate and concrete
Dam body is connected by copper water stop, and pitch high pressure closed pore plate is arranged between coagulation earth mulch weight plate and concrete dam body；
(4) it when coagulation earth mulch weight plate intensity is greater than 80% design strength, is carried out in coagulation earth mulch weight plate lower part
The construction of grout curtain；
(5) after Curtain Grouting Construction finishes simultaneously passed examination, the drilling for carrying out drainage hole after curtain in collector drain is applied
Work.
Specifically, coagulation earth mulch weight plate 2 is arranged in 1 upstream side of concrete dam body, coagulation earth mulch weight plate 2 is placed in base
It on rock 3, is reinforced by dowel 4, twice copper water stop 5, twice Copper water stop is arranged in coagulation earth mulch weight plate 2 and concrete dam body 1
Bituminous flax cord 7 is filled among the copper lug 6 of piece 5, and pitch height is set between coagulation earth mulch weight plate 2 and concrete dam body 1 and is pressed off
Orifice plate 8, drainage hole 10 after the 2 lower disposed grout curtain 9 of coagulation earth mulch weight plate and curtain, the setting of drainage hole 10 is mixed after curtain
The lower part of collector drain 11 in solidifying earth dam body 1.Grout curtain inside dam body compared with irrigation gallery is placed in traditional grout curtain
And drainage hole moves forward after curtain, so that grout curtain and dam construction interfere with each other reduction, the connection of copper water stop flexible structure is kept away
Influence of the tensile stress to grout curtain structure is exempted from, downstream uplift pressure reduces, and corresponding reduction of seeping water substantially increases the knot of dam body
Structure safety.
Twice copper water stop 5 is arranged in coagulation earth mulch weight plate 2 and concrete dam body 1, has that resistance to corrosion is strong, tension is strong
Horizontal leakage preventing body of the twice copper water stop 5 for the advantages that spending height, good toughness, acceptable moderate finite deformation as total.Coagulation
Pitch high pressure closed pore plate 8 is set between earth mulch weight plate 2 and concrete dam body 1, so that coagulation earth mulch weight plate 2 and concrete dam
The structure for being suitable for dam deformation is formed between body 1.The 2 lower disposed grout curtain 9 of coagulation earth mulch weight plate and 9 heel row of grout curtain
Water hole 10, grout curtain 9 prevent the leakage of water, and collector drain 11 in concrete dam body 1 is arranged in drainage hole 10 after curtain
Lower part reduces dam body uplift pressure.In addition, grout curtain is constructed by being moved to outside dam on coagulation earth mulch weight plate in irrigation gallery,
Working environment is greatly improved, and embodies humanistic care.Structural shape is simple, easy to operate, and cost is lower, and easy to implement, applies
Work, maintenance are simple and convenient.
Meanwhile concrete dam body 1 by coagulation earth mulch weight plate 2, grout curtain 9 and the construction of drainage hole 10 in the case where not interfered
It pours simultaneously.
Embodiment described above is merely to illustrate the technical idea and feature of the utility model, and its object is to make ability
Technical staff in domain, cannot be only practical new to limit this with this example it will be appreciated that the content of the utility model and implement accordingly
The scope of the patents of type, i.e., same changes or modifications made by the revealed spirit of all the utility model, still falls in the utility model
The scope of the patents in.
Claims (5)
1. a kind of concrete dam grout curtain arragement construction, including basement rock (3), concrete dam body (1), grout curtain (9), draining
Gallery (11), which is characterized in that coagulation earth mulch weight plate (2) are arranged in concrete dam body (1) upstream side, coagulation earth mulch weight plate
(2) it is placed on basement rock (3), copper water stop (5) is set between coagulation earth mulch weight plate (2) and concrete dam body (1), copper water stop
(5) bituminous flax cord (7) are filled among copper lug (6), drip is set between coagulation earth mulch weight plate (2) and concrete dam body (1)
Green high pressure closed pore plate (8), coagulation earth mulch weight plate (2) lower disposed grout curtain (9), collector drain in concrete dam body (1)
(11) drainage hole (10) after lower part setting curtain.
2. concrete dam grout curtain arragement construction according to claim 1, which is characterized in that the coagulation earth mulch weight plate
(2) thickness is not less than 3m.
3. concrete dam grout curtain arragement construction according to claim 1, which is characterized in that the grout curtain (9) away from
Upstream dam facing 2.5-3m.
4. concrete dam grout curtain arragement construction according to claim 1, which is characterized in that the collector drain (11) is tight
Adjacent dam body downstream side.
5. concrete dam grout curtain arragement construction according to claim 1, which is characterized in that the coagulation earth mulch weight plate
(2) it is reinforced on basement rock (3) by dowel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821531398.1U CN208830256U (en) | 2018-09-18 | 2018-09-18 | A kind of concrete dam grout curtain arragement construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821531398.1U CN208830256U (en) | 2018-09-18 | 2018-09-18 | A kind of concrete dam grout curtain arragement construction |
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| Publication Number | Publication Date |
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| CN208830256U true CN208830256U (en) | 2019-05-07 |
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| CN201821531398.1U Active CN208830256U (en) | 2018-09-18 | 2018-09-18 | A kind of concrete dam grout curtain arragement construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930252A (en) * | 2018-09-18 | 2018-12-04 | 中水北方勘测设计研究有限责任公司 | A kind of concrete dam grout curtain arragement construction and its construction method |
-
2018
- 2018-09-18 CN CN201821531398.1U patent/CN208830256U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108930252A (en) * | 2018-09-18 | 2018-12-04 | 中水北方勘测设计研究有限责任公司 | A kind of concrete dam grout curtain arragement construction and its construction method |
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