CN206986843U - Concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course - Google Patents
Concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course Download PDFInfo
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- CN206986843U CN206986843U CN201720585171.4U CN201720585171U CN206986843U CN 206986843 U CN206986843 U CN 206986843U CN 201720585171 U CN201720585171 U CN 201720585171U CN 206986843 U CN206986843 U CN 206986843U
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- Prior art keywords
- concrete
- back filled
- filled region
- displacement
- seepage
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- 239000004567 concrete Substances 0.000 title claims abstract description 88
- 239000004575 stone Substances 0.000 title claims abstract description 13
- 230000007704 transition Effects 0.000 title claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims abstract description 34
- 239000004576 sand Substances 0.000 claims abstract description 11
- 238000004062 sedimentation Methods 0.000 claims description 24
- 239000000945 filler Substances 0.000 claims description 15
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 239000011165 3D composite Substances 0.000 claims description 5
- 230000015271 coagulation Effects 0.000 claims description 2
- 238000005345 coagulation Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000003860 storage Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000011440 grout Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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- Revetment (AREA)
Abstract
The utility model discloses concrete in a kind of anti-seepage geomembrane bed course and the transition structure of native stone back filled region, including the displacement concrete being arranged between structural concrete and back filled region；Displacement concrete upper table, which faces out, diffuses to form gentle slope aproll structure；Displacement concrete and structural concrete contact position are provided with leakage preventing structure；It is provided with above back filled region and extends seepage paths structure；Extend seepage paths superstructure and be provided with reserved backfill structure；Reserved backfill superstructure is provided with natural river sand layer；Pre-embedment grouting pipe is provided with displacement concrete, pre-embedment grouting pipe is set along structural concrete sideline；The utility model structure is clearly demarcated, difficulty of construction is small, speed of application is fast, and cost input is low, strong applicability.
Description
Technical field
It the utility model is related to concrete and back filled region transition structure, and in particular to coagulation in a kind of anti-seepage geomembrane bed course
The native and transition structure of native stone back filled region.
Background technology
In Construction of Pumped Storage Power Station, increasing full storehouse basin antiseepage reservoir is carried out in storehouse basin bottom part using geomembrane
Antiseepage；But often occur native stone backfill and concrete structure phase tape splicing in being crouched under the storehouse basin of storage station, and backfill the height of slag body
Degree is universal higher, certainly will there is certain sedimentation and deformation, especially the concrete structure week in adjacent relative consistency sedimentation
Side, easily there is cliff of displacement formula step；Even if sedimentation period has been reserved to be settled, but under the high water head effect after water storage, it is such
Situation still inevitably occurs；So easily formed and come to nothing in geomembrane bottom, geomembrane is in stretched wire tensile state and straight
Connect and bear head pressure and cause drawing crack to destroy, leave security-hidden trouble.
Utility model content
The utility model provides to be mixed in a kind of anti-seepage geomembrane bed course that backfills body sedimentation and will not be damaged to geomembrane
Solidifying native and the transition structure and its construction method of native stone back filled region.
The technical solution adopted in the utility model is：Concrete and the mistake of native stone back filled region in a kind of anti-seepage geomembrane bed course
Structure is crossed, including the displacement concrete being arranged between structural concrete and back filled region；Displacement concrete upper table faces out diffusion
Form gentle slope aproll structure；Displacement concrete and structural concrete contact position are provided with leakage preventing structure；It is provided with above back filled region
Extend seepage paths structure；Extend seepage paths superstructure and be provided with pre- sedimentation structure；Pre- sedimentation superstructure is provided with natural river sand layer；
Pre-embedment grouting pipe is provided with displacement concrete, pre-embedment grouting pipe is set along structural concrete sideline.
Further, the leakage preventing structure includes filler, is arranged on the adhesive linkage on filler surface and is arranged on adhesive linkage table
The antiseepage cover plate in face.
Further, displacement concrete and structural concrete contact position are provided with rubber bar in the filler.
Further, the back filled region is provided with the contact extended into displacement concrete with structural concrete contact position and returned
Fill out grout hole.
Further, the geomembrane for extending seepage paths structure and including three-dimensional composite drainage network and being disposed there above.
The beneficial effects of the utility model are：
(1) after reservoir filling, the deep back filled region settling amount in geomembrane bottom will not cause the utility model to geomembrane
Destroy, avoid therefore causing geomembrane damage to cause seepage prevention system to destroy and then reservoir leakage occurs, threaten reservoir safety；
(2) the utility model structure is clearly demarcated, difficulty of construction is small, speed of application is fast, and cost input is low, strong applicability.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is leakage preventing structure schematic diagram in the utility model.
In figure：1- structural concretes, 2- back filled regions, 3- anchoring concrete, 4- settle structure, 5- displacement concrete, 6- in advance
Natural river sand layer, 7- geomembrane anti-seepage structures, 8- leakage preventing structures, 9- contact rockfill groutings hole, 10- extend seepage paths structure, 801-
Antiseepage cover plate, 802- adhesive linkages, 803- fillers, 804- rubber bars.
Embodiment
The utility model is described further with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1-2, concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course, including set
Displacement concrete 5 between structural concrete 1 and back filled region 2；The displacement upper table of concrete 5, which faces out, diffuses to form gentle slope aproll
Structure；Displacement concrete 5 and the contact position of structural concrete 1 are provided with leakage preventing structure 8；The top of back filled region 2 is provided with extension seepage paths
Structure 10；Extend the top of seepage paths structure 10 and be provided with pre- sedimentation structure 4；The pre- top of sedimentation structure 4 is provided with natural river sand layer 6；
Pre-embedment grouting pipe is provided with displacement concrete 5, pre-embedment grouting pipe is set along the sideline of structural concrete 1.
Further, the leakage preventing structure 8 includes filler 803, the adhesive linkage 802 for being arranged on the surface of filler 803 and set
Antiseepage cover plate 801 on the surface of adhesive linkage 802.
Further, displacement concrete 5 and the contact position of structural concrete 1 are provided with rubber bar in the filler 803
804。
Further, the back filled region 2 and the contact position of structural concrete 1, which are provided with, extends into connecing in displacement concrete 5
Touch rockfill grouting hole 9.
Further, the geomembrane for extending seepage paths structure 10 and including three-dimensional composite drainage network and being disposed there above.
Concrete and the construction method of back filled region transition structure, comprise the following steps in a kind of antiseepage bed course：
A, back filled region 2 carries out filling grouting at the middle and upper levels around structural concrete 1, makes the surrounding back filled region 2 of structural concrete 1
Form sedimentation gentle slope；
B, the part of 1 surrounding back filled region of structural concrete 2 backfill material is replaced into displacement concrete 5, displacement concrete 5 surface
Form the gentle slope aproll structure toward external diffusion；
C, pre-embedment grouting pipe during concrete 5 pours is replaced, pre-embedment grouting pipe is arranged along the sideline of structural concrete 1,
The displacement bottom back filled region 2 of concrete 5 and the intersection of structural concrete 1 are in the milk；
D, leakage preventing structure 8 is set in displacement concrete 5 and the contact position of structural concrete 1；
E, set above back filled region 2 and extend seepage paths structure 10, extended the top of seepage paths structure 10 and pre- sedimentation structure 4 is set,
The pre- top of sedimentation structure 4 sets natural river sand layer 6.
Further, the filling grouting is irrigated using low pressure underflow.
It is structural concrete 1 first near tower body by taking the hydroenergy storage station upper storage reservoir entry/exit water tower periphery of Liyang as an example
Carry out filling grouting in neighbouring 2~5m scopes back filled region 2, filling grouting object be back filled region 2 at the middle and upper levels；Grouting uses low pressure
Underflow irrigates, and array pitch determines according to grout spreading range between grout hole, and the part is mainly used in improving the compactness of back filled region 2 and pressure
The deformation of sedimentation of back filled region 2 in the range of contracting modulus, the reduction periphery of structural concrete 1；Make near tower body, tower body, tower body
Periphery forms sedimentation gentle slope on a large scale, reduces sedimentation ladder and avoids excessive inhomogeneous deformation；The periphery back filled region of structural concrete 1
After the completion of 2 filling grouting, the backfill material in the range of the 1~2m of periphery of structural concrete 1 is replaced as concrete structure and forms displacement
Concrete 5；Displacement concrete 5 surface forms the gentle slope aproll structure toward external diffusion；The part is equivalent in structural concrete 1
Periphery forms a circle shirt rim, further reduces sedimentation ladder；The pre-embedment grouting pipe in the casting process of concrete 5 is replaced, grout pipe
Arranged along the sideline of structural concrete 1, the displacement bottom back filled region 2 of concrete 5 is in the milk with the intersection of structural concrete 1；It is anti-
Only have infiltration along structural concrete 1 and under, displacement concrete 5 bottom back filled region 2 is washed away, forms cavity；To be further
Prevent geomembrane bottom current along displacement concrete 5 and structural concrete 1 and under, bottom back filled region 2 is caused to wash away, need to be to two
Kind concrete seam carries out Anti-seeping technology, sets leakage preventing structure 8；The leakage preventing structure 8 includes filler 803, is arranged on filler
The adhesive linkage 802 on 803 surfaces and the antiseepage cover plate 801 for being arranged on the surface of adhesive linkage 802；Close to displacement concrete in filler 803
5 and the contact position of structural concrete 1 be provided with rubber bar 804；Antiseepage cover plate 801 is SR antiseepage cover plates, and filler is SR flexible fillers,
Tack coat is HK988 coatings, forms comprehensive leakage preventing structure 8；Then carry out extension and ooze to construct through structure 10, the part is by geotechnique
Film and three-dimensional composite drainage network composition, geomembrane are covered in three-dimensional composite drainage network top；Geomembrane overlay area is moderately more than
Certain limit beyond the filling grouting region of back filled region 2；Part-structure effect is, when seeping water under film, to draw infiltration
Go out and nearby arrive peripheral far field in well week, and reduce osmotic pressure head and flow rate of water flow, prevent from concentrating punching to the back filled region 2 near well week
Brush；It is based on special bedding material to extend the top of seepage paths structure 10 as pre- sedimentation structure 4, this structure, locally uses natural sand；The structure
Effect is, after reservoir filling, well week back filled region 2 settling amount is supplemented using part superelevation, subtracted when settling
It is small, even completely avoid and unfavorable sedimentation step occur；The thickness of 4 thickness combination back filled region of pre- sedimentation structure 2 and head are counted
Calculate and determine；Pre- sedimentation its general particle diameter of structure 4 is larger easily to be caused to pierce through risk to geomembrane, so in its upper surface making one
Layer natural river sand layer 6, river sand thickness is in 10cm or so；After the construction of natural river sand layer 6 terminates, you can the geomembrane for carrying out top layer is prevented
Ooze structure 7 to be constructed, in order to improve security；The region geomembrane anti-seepage structure 7 typically uses double-deck geomembrane, top layer film
Water resistant stream souring is mainly played, lower membrane mainly plays structure antiseepage.
The utility model reduces geomembrane bottom by using the concrete replacement of the filling grouting of back filled region 2, backfill material
The sedimentation of bed course；Then local infiltration or underground are reduced using the leakage preventing structure 8 contacted between rockfill grouting and concrete
Water influences on bottom bed course water eroding and flooding；Geomembrane is prevented after settling antiseepage finally by pre- sedimentation structure 4 and natural layer of sand 7
Ooze systematic influence to be preferably minimized, be finally reached the effect of protection geomembrane anti-seepage system；From the reduction settling amount of back filled region 2 and inequality
Even deformation and reduction sedimentation in terms of geomembrane influence on setting out；Pass through various structures, it is ensured that after reservoir filling, geomembrane bottom
The settling amount of back filled region 2 will not damage to geomembrane, be allowed to deformation and drop to geomembrane can to avoid within tolerance range in itself
Therefore cause geomembrane damage to cause seepage prevention system to destroy and then reservoir leakage occurs, threaten reservoir safety；With structure point
It is bright, difficulty of construction is small, speed of application is fast, cost input is low, be applicable ability it is strong the advantages that.
Claims (5)
1. concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course, it is characterised in that：Including being arranged on
Displacement concrete (5) between structural concrete (1) and back filled region (2)；Displacement concrete (5) upper table face out diffuse to form it is slow
Slope aproll structure；Displacement concrete (5) and structural concrete (1) contact position is provided with leakage preventing structure (8)；Above back filled region (2)
It is provided with and extends seepage paths structure (10)；Extend above seepage paths structure (10) and be provided with pre- sedimentation structure (4)；Pre- sedimentation structure (4)
Top is provided with natural river sand layer (6)；Pre-embedment grouting pipe is provided with displacement concrete (5), pre-embedment grouting pipe is along structure coagulation
Native (1) sideline is set.
2. concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course according to claim 1, its
It is characterised by：The leakage preventing structure (8) includes filler (803), the adhesive linkage (802) for being arranged on filler (803) surface and set
Antiseepage cover plate (801) on adhesive linkage (802) surface.
3. concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course according to claim 2, its
It is characterised by：Displacement concrete (5) and structural concrete (1) contact position is provided with rubber bar in the filler (803)
(804)。
4. concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course according to claim 1, its
It is characterised by：The back filled region (2) is provided with the contact extended into displacement concrete (5) with structural concrete (1) contact position
Rockfill grouting hole (9).
5. concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course according to claim 1, its
It is characterised by：The geomembrane for extending seepage paths structure (10) and including three-dimensional composite drainage network and being disposed there above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720585171.4U CN206986843U (en) | 2017-05-24 | 2017-05-24 | Concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720585171.4U CN206986843U (en) | 2017-05-24 | 2017-05-24 | Concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206986843U true CN206986843U (en) | 2018-02-09 |
Family
ID=61390694
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720585171.4U Expired - Fee Related CN206986843U (en) | 2017-05-24 | 2017-05-24 | Concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206986843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988272A (en) * | 2017-05-24 | 2017-07-28 | 中国水利水电第五工程局有限公司 | Concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course |
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2017
- 2017-05-24 CN CN201720585171.4U patent/CN206986843U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106988272A (en) * | 2017-05-24 | 2017-07-28 | 中国水利水电第五工程局有限公司 | Concrete and the transition structure of native stone back filled region in a kind of anti-seepage geomembrane bed course |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180209 |