CN209053065U - The leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer - Google Patents
The leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer Download PDFInfo
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- CN209053065U CN209053065U CN201821776019.5U CN201821776019U CN209053065U CN 209053065 U CN209053065 U CN 209053065U CN 201821776019 U CN201821776019 U CN 201821776019U CN 209053065 U CN209053065 U CN 209053065U
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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 belongs to hydraulic and hydroelectric engineering technical field, specifically discloses a kind of leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer.The leakage preventing structure includes dam foundation gallery, the asphaltic concrete core wall being arranged at the top of dam foundation gallery and the dam foundation impervious wall for being arranged in coating and being connected with dam foundation gallery bottom；Impervious material layer, thickness >=5mm of impervious material layer are provided on the outer surface of dam foundation gallery.The impervious material layer for being not less than 5mm by the way that thickness is arranged on the outer surface of dam foundation gallery; antiseepage protection can be carried out on dam foundation gallery periphery; dam foundation gallery is avoided directly to connect with the stronger Transition Materials of permeability; cause barrier performance to reduce because being influenced by inhomogeneous deformation in axis of dam direction prevented also from dam foundation gallery on deep covering layer, effectively increases the antiseepage reliability and safety of rockfill dam with asphalt concrete core on deep covering layer.
Description
Technical field
The utility model belongs to hydraulic and hydroelectric engineering technical field, and in particular to bituminous concrete on a kind of deep covering layer
The leakage preventing structure of core wall rockfill dam.
Background technique
Earth and rockfill dam impervious core is connect with dam foundation coating cut-pff wall using gallery, not only can be in the construction time in gallery
Grout curtain, which is carried out, to save engineering construction straight line duration and investment to be anti-during dam later period engineering operation
The offers such as monitoring, maintenance, the maintenance of infiltration system construction channel.This gallery connection type in native core wall rockfill dam using compared with
It is more, gallery connection type is promoted the use of into rockfill dam with asphalt concrete core, due to very thin (the about 1m of asphaltic concrete core wall
Left and right), gallery structure stress is more complicated, and compared to native core wall rockfill dam, and there is no high plastic clay to be protected around gallery,
Gallery directly connects with the stronger Transition Materials of permeability, directly participation water blocking, and dam foundation gallery is also deposited especially on deep covering layer
In inhomogeneous deformation, therefore the reliability of seepage control system and safety are unable to get guarantee.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of antiseepage reliabilities and the higher deep covering of safety
The leakage preventing structure of rockfill dam with asphalt concrete core on layer.
The technical scheme adopted by the utility model to solve the technical problem is as follows: asphaltic concrete core wall on deep covering layer
The leakage preventing structure of rock-fill dams, including dam foundation gallery on the cover layer, the bituminous concrete being arranged at the top of dam foundation gallery is arranged
Core-wall and the dam foundation impervious wall for being arranged in coating and being connected with dam foundation gallery bottom, the asphaltic concrete core wall and dam
Seepage prevention of core wall interconnecting piece is provided between base gallery；Impervious material layer is provided on the outer surface of the dam foundation gallery, it is described anti-
Seep thickness >=5mm of material layer.
Further, the dam foundation gallery includes concrete wall and the gallery inner cavity that is surrounded by concrete wall.
Further, the concrete wall is formed by cellulose fibre concreting.
Further, the bottom of the asphaltic concrete core wall is equipped with the amplification foot of trapezoidal structure, and pass through amplification
Foot is in contact with seepage prevention of core wall interconnecting piece.
Further, the seepage prevention of core wall interconnecting piece includes the dabbing portion being arranged at the top of dam foundation gallery and is cast in chisel
Bitumastic layer in hair portion.
Further, the bitumastic layer with a thickness of 2~3cm.
Further, the impervious material layer is by density > 1.3g/cm3, elongation > 20%, infiltration coefficient < 1 ×
10-9The pitch antiseepage film of cm/s is laid with.
Further, the bottom of the dam foundation gallery is in inverted trapezoidal, and it is embedded in and is arranged in coating.
Further, the dam foundation impervious wall is rigidly connected with dam foundation gallery.
The beneficial effects of the utility model are: anti-not less than 5mm by the way that thickness is arranged on the outer surface of dam foundation gallery
Seep material layer, can dam foundation gallery periphery carry out antiseepage protection, avoid dam foundation gallery directly with the stronger Transition Materials of permeability
Connect, leads to barrier performance because being influenced by inhomogeneous deformation in axis of dam direction prevented also from dam foundation gallery on deep covering layer
It reduces, effectively increases the antiseepage reliability and safety of rockfill dam with asphalt concrete core on deep covering layer.Using density
> 1.3g/cm3, elongation > 20%, infiltration coefficient < 1 × 10-9The pitch antiseepage film of cm/s is laid with impervious material layer, has and applies
The advantages that work is convenient, speed is fast, good seepage-proof property, and also there is good flexibility at -5 DEG C and be bent not broken.Dam
The concrete wall of base gallery is formed by cellulose fibre concreting, more mixed than polypropylene fibre under same fibers content
Solidifying soil has better cracking resistance, impervious, freeze thawing resistance, ultimate extension, workability, tensile strength and elasticity modulus performance, enhances
The cracking resistance of gallery concrete.
Detailed description of the invention
Fig. 1 is the implementation structural schematic diagram of the utility model；
In the figure, it is marked as coating 100, dam foundation gallery 200, concrete wall 201, gallery inner cavity 202, seepage prevention of core wall connection
Portion 210, dabbing portion 211, bitumastic layer 212, impervious material layer 220, asphaltic concrete core wall 300, amplification foot 310, dam
Base cut-pff wall 400.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Figure 1, on deep covering layer rockfill dam with asphalt concrete core leakage preventing structure, including be arranged in coating
Dam foundation gallery 200 on 100, the asphaltic concrete core wall 300 that 200 top of dam foundation gallery is set and it is arranged in coating 100
Dam foundation impervious wall 400 that is interior and being connected with 200 bottom of dam foundation gallery, between asphaltic concrete core wall 300 and dam foundation gallery 200
It is provided with seepage prevention of core wall interconnecting piece 210；Impervious material layer 220, impervious material layer are provided on the outer surface of dam foundation gallery 200
220 thickness >=5mm.
Impervious material layer 220 is generally configured after dam foundation gallery 200 pours, and is covered with the entire of dam foundation gallery 200
Outer surface；The impervious material layer 220 for being not less than 5mm by the way that thickness is arranged on the outer surface of dam foundation gallery 200, can be in the dam foundation
Gallery periphery carries out effective antiseepage protection, avoids dam foundation gallery 200 from directly connecting with the stronger Transition Materials of permeability, can also prevent
Only dam foundation gallery in axis of dam direction leads to because being influenced by inhomogeneous deformation the reduction of antiseepage reliability on deep covering layer, effectively
Improve the antiseepage reliability and safety of rockfill dam with asphalt concrete core on deep covering layer.Impervious material layer 220 can be with
To be a variety of, it is preferably laid with special asphalt antiseepage film；For the ease of construction, shorten the construction period, and it is close to guarantee that anti-seepage effect generallys use
Spend > 1.3g/cm3, elongation > 20%, infiltration coefficient < 1 × 10-9The pitch antiseepage film of cm/s is laid with impervious material layer 220；
Moreover, the pitch antiseepage film also has good flexibility at -5 DEG C, and it is bent not broken.
Dam foundation gallery 200 can be used not only for the construction time carry out grout curtain, thus save the engineering construction straight line duration and
Investment can also be that monitoring, maintenance, the maintenance etc. of seepage control of dam system provide construction channel during later period engineering operation.Dam
The gallery inner cavity 202 that base gallery 200 generally comprises concrete wall 201 and surrounded by concrete wall 201.Concrete wall 201 is excellent
Choosing is formed by cellulose fibre concreting.Make substrate with cement slurry, mortar or concrete, and reinforcing material made with fiber,
Composed cement-base composite material is known as fiber concrete.Fiber can control the further development of original concrete crackle, from
And improve crack resistance.Since the tensile strength of fiber is big, elongation percentage is big, makes the tension of concrete, bending resistance, impact strength and prolong
It stretches rate and toughness is improved.Cellulose fibre concrete refers to that mixed fiber is the fiber concrete of cellulose fibre.For
The performances such as cracking resistance, impervious, freeze thawing resistance, ultimate extension, workability, tensile strength and the elasticity modulus of concrete are improved, preferably
Make the incorporation of cellulose fibre in cellulose fibre concrete not less than 0.9kg/m3。
Connecting portion stress deformation between asphaltic concrete core wall 300 and dam foundation gallery 200 is complicated, is the key of antiseepage
Position, being attached by setting seepage prevention of core wall interconnecting piece 210 can adapt to stress deformation, guarantee anti-seepage effect.In order to reinforce
Structure, and contact surface product is promoted, the amplification foot of trapezoidal structure is usually equipped in the bottom of asphaltic concrete core wall 300
310, and be in contact by amplifying foot 310 with seepage prevention of core wall interconnecting piece 210.
Preferably, then as shown in Figure 1, seepage prevention of core wall interconnecting piece 210 includes the dabbing portion that 200 top of dam foundation gallery is arranged in
211 and the bitumastic layer 212 that is cast in dabbing portion 211.Dabbing is formed by carrying out dabbing at the top of dam foundation gallery 200
Portion 211 connects asphaltic concrete core wall 300 and dam foundation gallery 200 conducive to by connecting material；By the way that pitch Ma is arranged
Hoof rouge forms bitumastic layer 212 as connecting material and asphaltic concrete core wall 300 and dam foundation gallery 200 is connected to one
It rises, stress deformation can not only be adapted to, and make junction barrier performance with higher.The thickness of bitumastic layer 212
Degree is preferably 2~3cm, is not only convenient for being arranged, and can guarantee connection and anti-seepage effect.
In order to improve stability and antiseepage reliability, then as shown in Figure 1, ladder is set down by the bottom of dam foundation gallery 200
Shape structure, and be embedded in and be arranged in coating 100.
In order to improve the antiseepage reliability of dam foundation impervious wall 400 Yu 200 connecting portion of dam foundation gallery, preferably make seepage prevention of dam founda
Wall 400 is rigidly connected with dam foundation gallery 200.
Claims (9)
1. the leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer, including the dam being arranged on coating (100)
Base gallery (200), the asphaltic concrete core wall (300) being arranged at the top of dam foundation gallery (200) and setting are in coating (100)
And the dam foundation impervious wall (400) being connected with dam foundation gallery (200) bottom, the asphaltic concrete core wall (300) and dam foundation corridor
Seepage prevention of core wall interconnecting piece (210) are provided between road (200)；It is characterized by: being set on the outer surface of the dam foundation gallery (200)
It is equipped with impervious material layer (220), thickness >=5mm of the impervious material layer (220).
2. the leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer as described in claim 1, it is characterised in that:
The dam foundation gallery (200) includes concrete wall (201) and the gallery inner cavity (202) that is surrounded by concrete wall (201).
3. the leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer as claimed in claim 2, it is characterised in that:
The concrete wall (201) is formed by cellulose fibre concreting.
4. the leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer as described in claim 1, it is characterised in that:
The bottom of the asphaltic concrete core wall (300) be equipped with trapezoidal structure amplification foot (310), and by amplification foot (310) with
Seepage prevention of core wall interconnecting piece (210) is in contact.
5. the leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer as claimed in claim 4, it is characterised in that:
The seepage prevention of core wall interconnecting piece (210) includes the dabbing portion (211) being arranged at the top of dam foundation gallery (200) and is cast in dabbing portion
(211) bitumastic layer (212) on.
6. the leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer as claimed in claim 5, it is characterised in that:
The bitumastic layer (212) with a thickness of 2~3cm.
7. the leakage preventing structure of rockfill dam with asphalt concrete core on the deep covering layer as described in claim 1,2,3,4,5 or 6,
It is characterized by: the impervious material layer (220) is by density > 1.3g/cm3, elongation > 20%, infiltration coefficient < 1 × 10- 9The pitch antiseepage film of cm/s is laid with.
8. the leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer as claimed in claim 7, it is characterised in that:
The bottom of the dam foundation gallery (200) is in inverted trapezoidal, and is embedded in setting in coating (100).
9. the leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer as claimed in claim 8, it is characterised in that:
The dam foundation impervious wall (400) is rigidly connected with dam foundation gallery (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821776019.5U CN209053065U (en) | 2018-10-29 | 2018-10-29 | The leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821776019.5U CN209053065U (en) | 2018-10-29 | 2018-10-29 | The leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer |
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| CN209053065U true CN209053065U (en) | 2019-07-02 |
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| CN201821776019.5U Active CN209053065U (en) | 2018-10-29 | 2018-10-29 | The leakage preventing structure of rockfill dam with asphalt concrete core on deep covering layer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593531A (en) * | 2020-12-15 | 2021-04-02 | 中国矿业大学(北京) | High-ductility wall-building protection underground reservoir artificial dam body structure and construction method thereof |
| CN113235524A (en) * | 2021-05-31 | 2021-08-10 | 长江水利委员会长江科学院 | Dam foundation gallery structure of core-wall rock-fill dam adopting ECC and construction method |
-
2018
- 2018-10-29 CN CN201821776019.5U patent/CN209053065U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112593531A (en) * | 2020-12-15 | 2021-04-02 | 中国矿业大学(北京) | High-ductility wall-building protection underground reservoir artificial dam body structure and construction method thereof |
| CN112593531B (en) * | 2020-12-15 | 2021-07-30 | 中国矿业大学(北京) | Construction method of high-ductility wall-building protection underground reservoir artificial dam body structure |
| CN113235524A (en) * | 2021-05-31 | 2021-08-10 | 长江水利委员会长江科学院 | Dam foundation gallery structure of core-wall rock-fill dam adopting ECC and construction method |
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