CN108130891A - High and cold seepage control of dam heat preservation anti-ice integral structure and its construction method - Google Patents
High and cold seepage control of dam heat preservation anti-ice integral structure and its construction method Download PDFInfo
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- CN108130891A CN108130891A CN201810090813.2A CN201810090813A CN108130891A CN 108130891 A CN108130891 A CN 108130891A CN 201810090813 A CN201810090813 A CN 201810090813A CN 108130891 A CN108130891 A CN 108130891A
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Building Environments (AREA)
Abstract
A kind of high and cold seepage control of dam heat preservation anti-ice integral structure and its construction method, the structure include the dam with upstream face and back side, which has fluctuation of water table area and first position, the second position；One layer of first impervious barrier is equipped in dam upstream face concrete surface, one layer of first insulating layer is equipped in the first antiseepage layer surface；One layer of second insulating layer is equipped in dam back side concrete surface, one layer of first protective layer is equipped on second insulating layer；Insulating layer antiseepage protection location is equipped in the first insulating layer between upstream face first position and the second position；One layer of second impervious barrier is equipped on the first insulating layer of upstream face and antiseepage protection location；A layer quilting is equipped in the second antiseepage layer surface.The present invention has the function of antiseepage, heat preservation, anti-ice, prevents dam concrete body crack from generating and extending, and prevents the insulating layer breakage of upstream face fluctuation of water table area, water suction failure, prevents current scour from leading to wear-out failure, ensures that dam safety is run.
Description
Technical field
The present invention relates to a kind of antiseepage-heat preservation-anti-ice protection integrated structures suitable for extremely frigid zones concrete dam
And its engineering method is formed, particularly a kind of antiseepage-heat preservation-the permanent of anti-ice protection suitable for upstream face tidal zone is prevented
Protection structure and freeze proof suitable for the permanent thermal insulation safeguard structure and dam spillwag chute of back side and the antiseepage of gate pier overcurrent side
Melt insulation construction.Meanwhile antiseepage-heat preservation-the anti-ice for being also applied for 1 day or more weak age concrete dam after concreting is prevented
Shield.The integral structure can form concrete dam long-term maintaining.
Background technology
Crack caused by dam concrete, the overwhelming majority are surface cracks, and a portion upstream face crack can be
Develop into deep layer or crosscutting concern under the external cause actions such as water pressure, temperature stress, deformation；In addition dam spillwag chute and overcurrent
Gate pier side, it is also very common disease to generate concrete wear and tear, cracking, freeze-thaw damage etc. due to overcurrent erosion infiltration etc.,
These influence the safe operation of dam structure and durability.The reason of causing surface crack mainly drying shrinkage and temperature stress
Deng for concrete dry stress under compression, pouring early stage, the maintenance that can sprinkle water by surface be improved；And for temperature stress,
The principal element for causing drawing stress on surface due to outside air temperature variation and the increasing of concrete inside and outside temperature difference, such as cold wave and
The climate simulation of extremely frigid zones.So using properly and effective Insulation, then with the traceable flexible barrier layers in crack
Structure design, it will largely reduce distress in concrete generation and extension, so as to improve extremely frigid zones dam
The performances such as concrete anti-seepage, cracking resistance, freeze thawing resistance ensure reservoir dam safe operation.
The U.S. began to pay attention to concrete dam body surface heat preservation antiseepage early in the 1950s.Detroit dam and flat-topped rock
Dam plastic foamboard or cardboard heat preservation, rope pier dam crest face are kept the temperature using layer of sand.Japanese many engineerings are added using plastic foamboard
Polyvinyl chloride film is as surface heat preservation and conserving material.1957~1961 years Bradleys in Siberia severe cold area of the former Soviet Union
Using the heat-barrier material that wood shavings are filled out in two thickness templates in thatch gram gravity dam, partly using precast slab.China eighties
Afterwards, foamed plastics become main thermal insulation material, mainly have polystyrol plastic foam plate, insulation quilt, polyethylene air bubble film,
Polyethylene foams plate etc., but the problems such as generally existing complicated construction technique, heat insulation effect are unstable, easy to fall off, aging.
Patent CN01259064, CN201220400905, CN201220444508, CN201410169983,
CN201710827201, CN203346852U propose setting hard-foam polyurethane insulation system structure, but due to the poly- ammonia of hard bubble
Ester thermal insulation material starts from the heat preservation of common building object, should under the use environment that hydraulic structure exposes for a long time, water impregnates, washes away
Hard-foam polyurethane material it is hygroscopic hydrolysis, be also easy to produce xanthochromia, dusting aging phenomenon, so as to lose heat insulation function, guarantor is not achieved
Temp effect, therefore, the antiseepage protection of permanent thermal insulation layer is very necessary.In addition, after upstream face water storage, the following water temperature of ice sheet can
2~6 degree or so are maintained at, interim Insulation can meet before the position setting water storage below upstream face tidal zone
Requirement.For the position that spillwag chute and gate pier overcurrent side need to be kept the temperature, to prevent flood discharge when washes out insulating layer and causes
Environmental pollution and the wasting of resources, using it is detachable and can secondary use insulating layer be a kind of sustainable development dam keep the temperature it is anti-
Protection structure.In addition, in extremely frigid zones, the ice sheet of upstream face tidal zone can be generated with fluctuation of water table to be moved up and down, from power
Angle analysis is learned, ice action mainly has ice push (expanding with heat and contract with cold) and ice pull out force (shearing and Moment) in surface.Insulating layer
Be also easy to produce destruction under ice push and the effect of ice pull out force and absorb water, so as to lose heat insulation effect, extremely frigid zones consider anti-ice push away,
The ice measure of pulling out is also extremely important.
Traditional concrete dam antiseepage-insulation construction is needed after concrete dams is waited to reach intensity, can just be prevented
The construction of infiltration layer, this greatly extends construction speed, influences construction period, therefore studies a kind of big suitable for weak age concrete
Antiseepage-heat preservation-the ice resistant structure on dam is necessary.In addition, dam release or sleet effect under, spillwag chute and gate pier overcurrent side
Face easily occurs rushing the destruction aging phenomenon such as mill, corrosion, freeze thawing, therefore prevent in spillwag chute and gate pier overcurrent side setting anti-seepage heat preservation
Protection structure is necessary.
Invention content
To solve the above-mentioned problems, the object of the present invention is to provide a kind of high and cold dams suitable for concrete dam field
Anti-seepage heat preservation anti-ice integral structure and its construction method have the function of antiseepage, heat preservation, can adapt to making for extremely frigid zones
With environment, tidal zone insulating layer global failure can be prevented, it is anti-that permanent seepage prevention heat preservation is formed in tidal zone
Shield.In addition, the integrative protection structure, has the function of that antiseepage anti-ice pushes away, anti-ice is pulled out, can prevent the water level of extremely frigid zones
Variable domain ice push and ice pull out force damage antiseepage and insulating layer, so as to prevent from losing heat preservation and antiseepage function.Meanwhile
The integral structure has the function of to spillwag chute and the side antiseepage of gate pier overcurrent, resistant abrasion, freeze thawing resistance, so as to prevent dam coagulation
Native body crack generates and extension, the safe operation for ensureing dam, dam durability is improved, in addition, the integrative protection structure
It can be adapted for weak age concrete dam, the construction period can be shortened.
To achieve the above object, the present invention takes following technical scheme：
A kind of high and cold seepage control of dam heat preservation anti-ice integral structure, it includes the dam with upstream face, back side, this is met
The water surface has lowest water level line and maximum stage line, and region therebetween is fluctuation of water table area；At the lowest water level line or
Lower section has first position, and at the maximum stage line or top has the second position；It is equipped in dam upstream face concrete surface
One layer of first impervious barrier is equipped with one layer of first insulating layer in the first antiseepage layer surface；It is set in dam back side concrete surface
There is one layer of second insulating layer, one layer of first protective layer is equipped on second insulating layer；In upstream face first position and second
The first insulating layer between putting is equipped with one layer of second impervious barrier.
Further, one layer of quilting is equipped on second impervious barrier；The first insulating layer more than the second position
Surface is equipped with the second protective layer.
Further, the dam also has spillwag chute and gate pier overcurrent side；The spillwag chute and gate pier overcurrent side are set
There is one layer of third impervious barrier, one layer of third insulating layer is equipped on the third impervious barrier.
Further, in the region described in upstream face between first position and the second position, in first insulating layer
There are one if, two or more the first lateral lattice slots, form one or more insulating layer antiseepage protection locations；This first point
Water seepage prevention adhesive tape is equipped in cell, the first insulating layer is separated into different insulating layer antiseepage protection locations, the water seepage prevention
First insulating layer of the first impervious barrier and both sides of adhesive tape and bottom and second impervious barrier on upper strata are firmly bonded.
Further, in the region described in upstream face between first position and the second position, in first insulating layer
Equipped with multiple the first lateral lattice slots, several second lattice slots, the second lattice slot are equipped between the first adjacent lattice slot
It is connected with the first lattice slot, the webbed multiple insulating layer antiseepage protection locations of shape；In the first lattice slot and this second point
Water seepage prevention adhesive tape is equipped in cell, the first insulating layer is separated into different netted insulating layer antiseepage protection locations；This is anti-
It oozes the first impervious barrier of article rubber water stop and bottom and the first insulating layer of both sides and second impervious barrier on upper strata is firmly bonded.
Further, first impervious barrier, the second impervious barrier, third impervious barrier are polyurea materials, first heat preservation
Layer, the second insulating layer, third insulating layer are organic heat-insulating or inorganic heat insulation material；The upstream face quilting by organosilicon or
Silastic material or multiple concrete prefabricated boards or multiple steel plates are formed；First protective layer and the second protective layer are organic material
Material or inorganic material.
Further, the polyurea materials are：Single group departure scrape polyurea materials, the pure polyurea materials of two-component spraying, double groups
Half polyurea materials of spraying, bi-component aspartate hand is divided to scrape polyurea materials or polyureas base composite anti-penetrating system material, it is described
The pure polyureas of two-component spraying and polyureas base composite anti-penetrating system material meet following requirement：Coating strength ＞ 20MPA, elongation
The difference of ＞ 350%, water absorption rate ＜ 3%, component A NCO content ＞ 16%, solid content >=96%, B component ammonia value and hydroxyl value it is absolute
Value ＜ 5, with basal plane cohesive force ＞ 2.5Mpa or basal plane concrete destruction；The organic insulation material is：Hard-foam polyurethane is kept the temperature
Material, EVA classes are modified thermal insulation material, insulating rubber plastic, PE thermal insulation materials or EPS thermal insulation materials.
The water seepage prevention adhesive tape is made of sealing flexible elastomer material, and the flexible elastomer material is organosilicon
Class embedding glue material is polyurethanes embedding glue material.
The construction method of the high and cold seepage control of dam heat preservation anti-ice integral structure, it includes the following steps：
(1) the first impervious barrier of upstream face is formed：
1. concrete surface is handled；
2. apply priming；
3. brushing or spray polyurea material after priming paint surface drying, form the first impervious barrier；
(2) the first insulating layer, the second insulating layer, third insulating layer are formed：
1. basal plane is handled；
2. it applies priming or pastes primer；
3. thermal insulation material is equably sprayed or is pasted on dam mutually in requisition for the position of heat preservation；
(3) insulating layer water seepage prevention adhesive tape is formed：
1. form the first lattice slot or the first lattice slot and the second lattice slot：Before the first insulating layer is formed, meeting water
First lattice slot or the first lattice slot and the second lattice slot template are set between face first position and the second position；Either exist
It is scratched in first insulating layer and digs out the first lattice slot or the first lattice slot and the second lattice slot；Form one or several more heat preservations
Layer antiseepage protection location；
2. basal plane is cleared up in the first lattice slot or the first lattice slot and the second lattice slot；
3. apply priming in the first lattice slot or the first lattice slot and the second lattice trench bottom and side；
4. by filling embankment method, water seepage prevention glue is formed in the first lattice slot or the first lattice slot and the second lattice slot
Item, water seepage prevention adhesive tape and the first impervious barrier of bottom and the first insulating layer of side are strong bonded, top and the first insulation layer surface
It is equal；
(4) antiseepage-ice resistant structure between first position and the second position is formed on the first insulating layer：
1. the first insulation layer surface between first position and the second position applies priming, brushed after priming paint surface drying or
Spray polyurea material forms the second impervious barrier；
2. in the second impervious barrier external coating organosilicon or silicon rubber body material, quilting is formed；
3. or in the second antiseepage layer surface, multiple steel plates or multiple concrete prefabricated boards are passed through into anchor pole and dam anchor
Gu form quilting；
(5) the first protective layer and the second protective layer are formed：
The first insulation layer surface and the second insulation layer surface brushing or spraying organic or inorganic more than the second position are prevented
Sheath.
Further, the insulating layer antiseepage protection location shape is triangle, rectangle, parallelogram or positive six
Side shape.
The beneficial effects of the invention are as follows：The high and cold seepage control of dam heat preservation anti-ice integral structure of the present invention and its construction method,
It has the function of antiseepage, heat preservation anti-ice.First impervious barrier of the present invention can be in the environment of low temperature and moisture, in weak age
Concrete dam surface is constructed, so as to shorten the construction period of engineering construction, other the first impervious barrier of the present invention
It is strong with the binding ability of concrete surface, it is adapted to the long-term bubble of dam, the use environment that high-velocity flow washes away.Institute of the present invention
The insulating layer stated can prevent concrete internal and external temperature difference caused by ambient temperature variation from increasing, so as to prevent dam coagulation
Native body crack generates and extension.The first protective layer of back side of the present invention can improve the durability of insulating layer, simultaneously
Prevent insulating layer water suction failure.The second impervious barrier of upstream face and quilting of the present invention can prevent tidal zone ice sheet
Ice push and ice pull out force destroyed caused by insulating layer, prevent insulating layer water suction failure.The heretofore described surface elastic that meets water
Sealing rod can prevent water from entering the insulating layer of tidal zone, so as to protect the insulating layer of tidal zone.The present invention
The reticulated elastomeric sealing rod can prevent the insulating layer of tidal zone from integrally absorbing water failure, be lost so as to reduce insulating layer
Range is imitated, reduces economic loss.
The high and cold seepage control of dam heat preservation anti-ice integral structure of the present invention has higher durability, is ensureing dam safety fortune
While row, dam durability is improved；The economic loss generated during safeguard structure repairing can also be reduced.
Description of the drawings
Fig. 1 is the cross section structure schematic diagram of the embodiment 1 of the high and cold seepage control of dam heat preservation anti-ice integral structure of the present invention.
Fig. 2 is the embodiment 2 of the high and cold seepage control of dam heat preservation anti-ice integral structure of the present invention and the cross section structure of embodiment 3
Schematic diagram.
Fig. 3 is the first insulating layer of upstream face of the embodiment 2 of the high and cold seepage control of dam heat preservation anti-ice integral structure of the present invention
Structure diagram.
Fig. 4 is the first insulating layer of upstream face of the embodiment 3 of the high and cold seepage control of dam heat preservation anti-ice integral structure of the present invention
Structure diagram.
Fig. 5 is the first insulating layer of upstream face of the embodiment 3 of the high and cold seepage control of dam heat preservation anti-ice integral structure of the present invention
Another embodiment structure diagram.
Fig. 6 is the cross section structure schematic diagram of the embodiment 4 of the high and cold seepage control of dam heat preservation anti-ice integral structure of the present invention.
Fig. 7 is the spillwag chute of the high and cold seepage control of dam heat preservation anti-ice integral structure of the present invention and the simplicity of gate pier overcurrent side
Schematic diagram.
Specific embodiment
The invention will be further described in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1
As shown in Figure 1, it keeps the temperature anti-ice integral structure for a kind of high and cold seepage control of dam provided by the invention
Embodiment 1 is suitble to extremely frigid zones, it includes the dam 1 with upstream face 11 and back side 12, which has
There are lowest water level line 13 and maximum stage line 14, region therebetween is fluctuation of water table area；At the lowest water level line 13 or
Lower section has first position 15, and at the maximum stage line 14 or top has the second position 16.In 1 upstream face of dam, 11 concrete
Surface is equipped with one layer of first impervious barrier 2, and one layer of first insulating layer 3 is equipped on 2 surface of the first impervious barrier.In dam back side 12
Concrete surface is equipped with one layer of second insulating layer 4, and one layer of first protective layer 5 is equipped on second insulating layer 4.In upstream face 11
The first insulating layer 3 between first position 15 and the second position 16 is equipped with one layer of second impervious barrier 6, in second impervious barrier 6
It is equipped with one layer of quilting 7.2 surface of the first insulating layer more than the second position is equipped with the second protective layer 9.In the fluctuation of water table
Qu Zhong is the region that the water surface freezes to the generation injury of the first insulating layer 3, and the ice push that ice sheet generates can be to 3 He of the first insulating layer
First impervious barrier 2 generates lateral impact, and the first insulating layer 3 is caused to destroy.On the other hand, it is attached to 3 surface of the first insulating layer
Ice sheet when being moved up and down with the water surface, the ice pull out force of generation can also cause the first insulating layer 3 dislocation to tear to destroy.Quilting 7
Can be to the side knock of ice sheet into row buffering, and sprung back after impact disappears, it maintains a relatively stable state, quilting 7 may be used also
Adhere to prevent stagnant ice layer or when ice sheet adheres to and moves up and down, since the frictional force between quilting and ice sheet is minimum, ice
Lid does not generate destruction to the first insulating layer 3.
First impervious barrier, the second impervious barrier, third impervious barrier are polyurea materials, and first insulating layer, second protect
Warm layer, third insulating layer are organic heat-insulating or inorganic heat insulation material；The upstream face quilting is by organosilicon or silicon rubber material
Material or multiple concrete prefabricated boards or multiple steel plates are formed；First protective layer and the second protective layer are organic material or inorganic
Material.The polyurea materials are：Polyurea materials, the pure polyurea materials of two-component spraying, half polyureas of two-component spraying are scraped in single group departure
Material, bi-component aspartate hand scrape polyurea materials, polyureas base composite anti-penetrating system material, and the two-component spraying is pure poly-
Urea and polyureas base composite anti-penetrating system material meet following requirement：Coating strength ＞ 20MPA, elongation ＞ 350%, water absorption rate
The absolute value of the difference ＜ 5 of ＜ 3%, component A NCO content ＞ 16%, solid content >=96%, B component ammonia value and hydroxyl value, glues with basal plane
Tie power ＞ 2.5Mpa or basal plane concrete destruction；The organic insulation material is：Hard-foam polyurethane thermal insulation material, EVA classes are modified
Thermal insulation material, insulating rubber plastic, PE thermal insulation materials or EPS thermal insulation materials.
Embodiment 2
As shown in Figure 2 and Figure 3, the embodiment 2 of anti-ice integral structure is kept the temperature for the high and cold seepage control of dam of the present invention, with
Difference lies in, the region between 11 first position 15 of upstream face and the second position 16, first insulating layers 3 for embodiment 1
There are one inside setting, two or more the first lateral lattice slots 31, such as at first position and the second place is set respectively
One the first lattice slot 31 or the first lattice slot 31 in twice slot segmentation intermediate region setting greater number, by first
Insulating layer is separated into different insulating layer antiseepage protection location A；Water seepage prevention adhesive tape 33 is equipped in the first lattice slot 31, by two
First insulating layer 3 of side separates.The water seepage prevention adhesive tape 33 and the first impervious barrier 2 of bottom and the first insulating layer 3 of both sides
And second impervious barrier 6 on upper strata is firmly bonded.
Embodiment 3
As shown in Fig. 2, Fig. 4, Fig. 5, the embodiment 3 of anti-ice integral structure is kept the temperature for the high and cold seepage control of dam of the present invention,
Difference lies in the region between 11 first position 15 of upstream face and the second position 16, described first keeps the temperature with embodiment 2 for it
Layer 3 is equipped with multiple the first lateral lattice slots 31, and several second lattice slots 32 are equipped between the first adjacent lattice slot 31, this
Two lattice slots 32 are connected with the first lattice slot 31, and the first insulating layer is separated into different netted insulating layer antiseepage protection locations
A.The insulating layer antiseepage protection location A shapes are triangle, rectangle, parallelogram or regular hexagon or other rules
Geometry.Adjacent insulating layer antiseepage protection location A does not interfere with each other influence, even if there are one insulating layer antiseepage protection is single
First A breakages cause the first insulating layer to absorb water, and will not be conducted into adjacent insulating layer antiseepage protection location, prevent the first of underwater
The water suction extension of insulating layer 3, destroys the first insulating layer 3 on the water surface.In the first lattice slot 31 and in the second lattice slot 32
Equipped with water seepage prevention adhesive tape 33, the first insulating layer 3 of different protection locations is separated.The water seepage prevention adhesive tape 33 and bottom
Second impervious barrier 6 of the first insulating layer 3 and upper strata of the first impervious barrier 2 and both sides is firmly bonded.
The water seepage prevention adhesive tape 33 is made of sealing flexible elastomer material, and the flexible elastomer material can be
Organic silicon embedding glue material is polyurethanes embedding glue material, in the present embodiment using polyurethanes embedding glue material
Material.
Embodiment 4
As shown in fig. 6, it keeps the temperature the embodiment 4 of anti-ice integral structure for the high and cold seepage control of dam of the present invention, with implementation
Difference lies in second impervious barrier of upstream face is made of example 1 polyureas base composite anti-penetrating system material.The upstream face resists
Ice sheet can be multiple steel plates or multiple concrete prefabricated boards, in the present embodiment using steel plate, be mixed by anchor pole 8 with dam
Solidifying soil anchoring.Because multiple steel plates or multiple concrete prefabricated boards are by the way that entire fluctuation of water table area is covered, and pass through anchor pole 8
It is anchored with dam concrete, can both play the role of anti-ice and push away, anti-ice can also be played and pulled out, in addition, with dismounting, installation
The features such as facilitating.
Embodiment 5
As shown in fig. 7, the dam 1 also has spillwag chute 17 and gate pier overcurrent side 18, the spillwag chute 17 and gate pier mistake
It flows side 18 and is equipped with third impervious barrier, one layer of third insulating layer is equipped on the third impervious barrier, wherein third insulating layer can be adopted
With bonding method paste, have the characteristics that dismounting, it is easy for installation.
The present invention also provides the construction methods of above-mentioned high and cold seepage control of dam heat preservation anti-ice integral structure, it includes following step
Suddenly：
(1) the first impervious barrier of upstream face is formed：
1. concrete surface is handled；
2. apply priming；
3. brushing or spray polyurea material after priming paint surface drying, form the first impervious barrier；
(2) the first insulating layer, the second insulating layer, third insulating layer are formed：
1. basal plane is handled；
2. it applies priming or pastes primer；
3. thermal insulation material is equably sprayed or is pasted on dam mutually in requisition for the position of heat preservation；
(3) insulating layer water seepage prevention adhesive tape is formed：
1. form the first lattice slot or the first lattice slot and the second lattice slot：Before the first insulating layer is formed, meeting water
First lattice slot or the first lattice slot and the second lattice slot template are set between face first position and the second position；Either exist
It is scratched in first insulating layer and digs out the first lattice slot or the first lattice slot and the second lattice slot；Form one or several more heat preservations
Layer antiseepage protection location；
2. basal plane is cleared up in the first lattice slot or the first lattice slot and the second lattice slot；
3. apply priming in the first lattice slot or the first lattice slot and the second lattice trench bottom and side；
4. by filling embankment method, water seepage prevention glue is formed in the first lattice slot or the first lattice slot and the second lattice slot
Item, water seepage prevention adhesive tape and the first impervious barrier of bottom and the first insulating layer of side are strong bonded, top and the first insulation layer surface
It is equal；
(4) antiseepage-ice resistant structure between first position and the second position is formed on the first insulating layer：
1. the first insulation layer surface between first position and the second position applies priming, brushed after priming paint surface drying or
Spray polyurea material forms the second impervious barrier；
2. in the second impervious barrier external coating organosilicon or silicon rubber body material, quilting is formed；
3. or in the second antiseepage layer surface, multiple steel plates or multiple concrete prefabricated boards are passed through into anchor pole and dam anchor
Gu form quilting.
(5) the first protective layer and the second protective layer are formed：
The first insulation layer surface and the second insulation layer surface brushing or spraying organic or inorganic more than the second position are prevented
Sheath.
Above-described embodiment is merely exemplary to illustrate the principle of the present invention and its effect, and is not intended to limit the present invention.The present invention
It can be improved under the premise of without prejudice to overall thought there are many more aspect, any person skilled in the art all can be not
Under the spirit and scope for violating the present invention, modifications and changes are carried out to above-described embodiment.Therefore, have in technical field such as
All equivalent modifications or change that usually intellectual is completed under without departing from disclosed spirit and technological thought,
It should be covered by the claim of the present invention.
Claims (10)
1. a kind of high and cold seepage control of dam heat preservation anti-ice integral structure, which is characterized in that it is included with upstream face, back side
Dam, the upstream face have lowest water level line and maximum stage line, and region therebetween is fluctuation of water table area；In the minimum water
At bit line or lower section has first position, and at the maximum stage line or top has the second position；It meets water surface concrete in dam
Surface is equipped with one layer of first impervious barrier, and one layer of first insulating layer is equipped in the first antiseepage layer surface；In dam back side coagulation
Native surface is equipped with one layer of second insulating layer, and one layer of first protective layer is equipped on second insulating layer；In upstream face first position
The first insulating layer between the second position is equipped with one layer of second impervious barrier.
2. high and cold seepage control of dam heat preservation anti-ice integral structure according to claim 1, which is characterized in that described second
Impervious barrier is equipped with one layer of quilting；The first insulation layer surface more than the second position is equipped with the second protective layer.
3. high and cold seepage control of dam heat preservation anti-ice integral structure according to claim 2, which is characterized in that the dam is also
With spillwag chute and gate pier overcurrent side；The spillwag chute and gate pier overcurrent side are equipped with one layer of third impervious barrier, prevent in the third
Infiltration layer is equipped with one layer of third insulating layer.
4. high and cold seepage control of dam heat preservation anti-ice integral structure according to claim 1, it is characterised in that：In upstream face institute
The region between first position and the second position is stated, one or two or multiple lateral the are equipped in first insulating layer
One lattice slot forms one or more insulating layer antiseepage protection locations；Water seepage prevention adhesive tape is equipped in the first lattice slot, by the
One insulating layer is separated into different insulating layer antiseepage protection locations, the first impervious barrier and both sides of the water seepage prevention adhesive tape and bottom
The first insulating layer and second impervious barrier on upper strata be firmly bonded.
5. high and cold seepage control of dam heat preservation anti-ice integral structure according to claim 1, it is characterised in that：In upstream face institute
The region between first position and the second position is stated, multiple the first lateral lattice slots, phase are equipped in first insulating layer
Several second lattice slots are equipped between the first adjacent lattice slot, which connects with the first lattice slot, is formed netted
Multiple insulating layer antiseepage protection locations；Water seepage prevention adhesive tape is equipped in the first lattice slot and in the second lattice slot, it will
First insulating layer is separated into different netted insulating layer antiseepage protection locations；The water seepage prevention adhesive tape and the first impervious barrier of bottom
It is firmly bonded with the first insulating layer of both sides and second impervious barrier on upper strata.
6. high and cold seepage control of dam heat preservation anti-ice integral structure according to claim 3, it is characterised in that：Described first is anti-
Infiltration layer, the second impervious barrier, third impervious barrier are polyurea materials, and first insulating layer, the second insulating layer, third insulating layer is have
Machine is kept the temperature or inorganic heat insulation material；The upstream face quilting is by organosilicon or silastic material or multiple concrete prefabricated boards
Or multiple steel plates are formed；First protective layer and the second protective layer are organic material or inorganic material.
7. high and cold seepage control of dam heat preservation anti-ice integral structure according to claim 6, which is characterized in that the polyureas material
Expect be：Polyurea materials, the pure polyurea materials of two-component spraying, half polyurea materials of two-component spraying, bi-component Tianmen are scraped in single group departure
Winter propylhomoserin ester hand scrapes polyurea materials or polyureas base composite anti-penetrating system material, and the pure polyureas of the two-component spraying and polyureas base are compound
Seepage prevention system material meets following requirement：Coating strength ＞ 20MPA, elongation ＞ 350%, water absorption rate ＜ 3%, component A NCO
The absolute value of the difference ＜ 5 of content ＞ 16%, solid content >=96%, B component ammonia value and hydroxyl value, and basal plane cohesive force ＞ 2.5Mpa,
Or basal plane concrete destruction；The organic insulation material is：Hard-foam polyurethane thermal insulation material, EVA classes are modified thermal insulation material, rubber and plastic
Thermal insulation material, PE thermal insulation materials or EPS thermal insulation materials.
8. high and cold seepage control of dam heat preservation anti-ice integral structure according to claim 4 or 5, it is characterised in that：Described
Water seepage prevention adhesive tape is made of sealing flexible elastomer material, the flexible elastomer material for organic silicon embedding glue material or
Person is polyurethanes embedding glue material.
9. the construction method of high and cold seepage control of dam heat preservation anti-ice integral structure according to any one of claim 1 to 8,
It is characterized in that, it includes the following steps：
(1) the first impervious barrier of upstream face is formed：
1. concrete surface is handled；
2. apply priming；
3. brushing or spray polyurea material after priming paint surface drying, form the first impervious barrier；
(2) the first insulating layer, the second insulating layer, third insulating layer are formed：
1. basal plane is handled；
2. it applies priming or pastes primer；
3. thermal insulation material is equably sprayed or is pasted on dam mutually in requisition for the position of heat preservation；
(3) insulating layer water seepage prevention adhesive tape is formed：
1. form the first lattice slot or the first lattice slot and the second lattice slot：Before the first insulating layer is formed, in upstream face
First lattice slot or the first lattice slot and the second lattice slot template are set between one position and the second position；Either first
It is scratched in insulating layer and digs out the first lattice slot or the first lattice slot and the second lattice slot；It forms one or several more insulating layers is prevented
Ooze protection location；
2. basal plane is cleared up in the first lattice slot or the first lattice slot and the second lattice slot；
3. apply priming in the first lattice slot or the first lattice slot and the second lattice trench bottom and side；
4. by filling embankment method, water seepage prevention adhesive tape is formed in the first lattice slot or the first lattice slot and the second lattice slot,
Water seepage prevention adhesive tape and the first impervious barrier of bottom and the first insulating layer of side are strong bonded, top and the first insulation layer surface phase
It is flat；
(4) antiseepage-ice resistant structure between first position and the second position is formed on the first insulating layer：
1. the first insulation layer surface between first position and the second position applies priming, brush or spray after priming paint surface drying
Polyurea materials form the second impervious barrier；
2. in the second impervious barrier external coating organosilicon or silicon rubber body material, quilting is formed；
3. or in the second antiseepage layer surface, multiple steel plates or multiple concrete prefabricated boards are anchored by anchor pole and dam,
Form quilting；
(5) the first protective layer and the second protective layer are formed：
The first insulation layer surface and the second insulation layer surface brushing or the organic or inorganic protective layer of spraying more than the second position.
10. the construction method of high and cold seepage control of dam heat preservation anti-ice integral structure according to claim 9, feature exist
In the insulating layer antiseepage protection location shape is triangle, rectangle, parallelogram or regular hexagon.
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| CN201810090813.2A CN108130891A (en) | 2018-01-30 | 2018-01-30 | High and cold seepage control of dam heat preservation anti-ice integral structure and its construction method |
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| CN201810090813.2A CN108130891A (en) | 2018-01-30 | 2018-01-30 | High and cold seepage control of dam heat preservation anti-ice integral structure and its construction method |
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| CN108130891A true CN108130891A (en) | 2018-06-08 |
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ID=62430108
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110205983A (en) * | 2019-05-20 | 2019-09-06 | 松花江水力发电有限公司丰满大坝重建工程建设局 | Severe cold area dam thermal-insulating leakage-resistant is anti-icing to pull out protection system and its construction method |
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| CN106958231A (en) * | 2017-05-16 | 2017-07-18 | 北京中水科海利工程技术有限公司 | A kind of composite insulation boards and the concrete dam heat-insulation system based on composite insulation boards |
| CN107435318A (en) * | 2017-09-14 | 2017-12-05 | 国家电网公司 | A kind of insulation anchor structure and construction method suitable for water resources dam polyureas barrier coat |
| CN208088238U (en) * | 2018-01-30 | 2018-11-13 | 李泽月 | High and cold seepage control of dam keeps the temperature anti-ice integral structure |
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| RU2453655C1 (en) * | 2011-02-28 | 2012-06-20 | Василий Петрович Ягин | Ground dam on permafrost foundation |
| CN203346852U (en) * | 2013-04-16 | 2013-12-18 | 新疆额尔齐斯河流域开发工程建设管理局 | Anti-seepage and heat-insulation integrated system of dam |
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| CN110205983A (en) * | 2019-05-20 | 2019-09-06 | 松花江水力发电有限公司丰满大坝重建工程建设局 | Severe cold area dam thermal-insulating leakage-resistant is anti-icing to pull out protection system and its construction method |
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