CN104790422B - Control system for dam foundation stratum uplift deformation - Google Patents
Control system for dam foundation stratum uplift deformation Download PDFInfo
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- CN104790422B CN104790422B CN201510224697.5A CN201510224697A CN104790422B CN 104790422 B CN104790422 B CN 104790422B CN 201510224697 A CN201510224697 A CN 201510224697A CN 104790422 B CN104790422 B CN 104790422B
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- stratum
- dam foundation
- dam
- pressure relief
- permeable
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Abstract
The invention discloses a control structure for dam foundation stratum uplift deformation. The control structure comprises a dam arranged on a dam foundation and a seepage-preventing curtain arranged below the dam foundation. The part below the dam foundation comprises a permeable stratum, a relatively non-permeable layer and a permeable rock stratum in sequence from top to bottom. A pressure relief gallery and multiple pressure relief holes are formed inside the dam, the pressure relief holes are formed inside the dam foundation, the top ends of the pressure relief holes are communicated with the pressure relief gallery, and the bottom ends of the pressure relief holes are located inside the permeable rock stratum. Stratum seepage force distribution and deep-layer water-drainage pressure relief controlling the stratum to generate seepage deformation are changed, and therefore stratum uplift deformation caused by water storage of a reservoir is reduced or eliminated.
Description
Technical field
The present invention relates to a kind of dam foundation stratum lifts Deformation control structure, belong to Hydraulic and Hydro-Power Engineering field, especially pin
Deformation control to Hydraulic and Hydro-Power Engineering dam foundation lifting.
Background technology
The uplift deformation that reservoir filling causes is a kind of distinctive stratum deformation phenomenon in international and domestic hydroelectric project.I
All there is different degrees of uplift deformation after Guo Tong streets, river a strip of land between hills Hydropower Plant Reservoir retaining.
Effective solution, comprehensive pertinent literature report both at home and abroad, reservoir filling are not proposed so far for this deformation
The generation of induction stratum lifts the earth formation of deformation and is in permeable stratum the geologic structure that velatively waterproof layer is distributed with.Occur
Reservoir filling changes hydraulic engineering hinge seepage field distribution nearby, under the conditions of specific geologic structure, hinge will be caused attached
Surface layer produces vertical " lifting " deformation upwards.This deformation may bring adverse effect to the stability of reservoir stability,
The Incoordinate deformation of checkdam may be caused, and then new additional stress is formed in dam structure, jeopardize dam safety.
The content of the invention
The stratum caused for existing reservoir filling lifts the present situation of deformation process technology shortage, the present invention is intended to provide one
Plant dam foundation stratum and lift Deformation control structure, the Deformation control structure can change stratum penetration distribution, control stratum and produce
The deep layer draining pressure release of seepage deformation, the stratum caused so as to realize reducing and eliminate reservoir filling lifts the purpose of deformation.
To achieve these goals, the technical solution adopted in the present invention is：
A kind of dam foundation stratum lifts Deformation control structure, including the checkdam being arranged on the dam foundation, and is arranged on the dam foundation
The antiseepage curtain of lower section；The dam foundation lower section is divided into from top to bottom permeable stratum, velatively waterproof layer and permeable stratum；Its knot
Structure feature is that pressure release gallery is provided with the checkdam, and the multiple relief holes being arranged in the dam foundation；The top of the relief hole
End connects with pressure release gallery, and the bottom of the relief hole is located in permeable stratum.
Velatively waterproof layer of the present invention refers to that basement rock permeability rate is less than 1.0Lu（Lv Rong）Rock stratum.
It is below the technical scheme of further improvement of the present invention：
Further, the bottom of the relief hole is located at the 5m-10m of velatively waterproof layer lower section.
Further, blind pipe is disposed with the relief hole, the plastics blind pipe is wrapped with geotextiles.Thus, in pressure release
The seepage deformation destruction for installing plastics blind pipe in hole to prevent long-term pressure release from causing.
Preferably, the antiseepage curtain sequentially passes through permeable stratum, velatively waterproof layer, and the bottom of the antiseepage curtain is placed in permeable
Within the rock.
Further, multiple relief holes are also offered on the reservoir stability of the dam foundation side, to reach to whole dam
The purpose of balanced pressure release.
Compared with prior art, the invention has the beneficial effects as follows：The present invention is reduced in the earth formation by arranging relief hole
The too high osmotic pressure for producing, reduces and controls the uplift deformation of the dam foundation, and reduction checkdam difference monoliths or even same monolith are not
With the differential settlement produced between position.
Rationally, simple structure is easy to operate for the uplift Deformation control structure layout design of the present invention.
Below in conjunction with drawings and Examples, the present invention is further elaborated.
Description of the drawings
Fig. 1 is the uplift deformation earth formation and relief hole layout drawing of one embodiment of the invention；
Fig. 2 is the structural map of plastics blind pipe of the present invention.
In figure
1- checkdams；2- pressure release gallerys；3- antiseepage curtains；4- relief holes；Pressure release hole length under 5- velatively waterproof layers；6- is saturating
Water stratum；7- velatively waterproof layers；8- permeable stratums；The 9- dam foundations；The 10- dash axis of dams；11- plastics blind pipes；12- geotextiles.
Specific embodiment
A kind of dam foundation stratum lifts Deformation control structure, as shown in figure 1, arranging pressure release gallery 2 in checkdam 1, passes through
Pressure release gallery arranges relief hole 4 in dam foundation stratum, and relief hole is about 5-10m through the length 5 of velatively waterproof layer 7.Pressure release
Plastics blind pipe 11 is installed in the hole of hole 4, as shown in Fig. 2 wrapping up in geotextiles 12 outside blind pipe, prevents the dam foundation from producing infiltration along relief hole 4 broken
Bearing capacity that is bad and reducing the dam foundation.The present invention is reduced velatively waterproof layer by relief hole 4 and is gathered in permeable rock mass 8 below 7
Mistake hypertonic pressure, reduction acts on the seepage water pressure of velatively waterproof layer 7 and pervious bed 6, realize control or reduce the dam foundation with
And side slope surface lifts deflection.By installing the outer plastics blind pipe 11 for wrapping up in geotextiles 12 in spilled water hole 4 so that seepage flow is from ground
The particle accumulation taken out of in layer prevents the fine grained in stratum from producing a large amount of losses near relief hole, and then causes ground to break
It is bad.
The content that above-described embodiment is illustrated should be understood to that these embodiments are only used for being illustrated more clearly that the present invention, and not
For limiting the scope of the present invention, after the present invention has been read, the various equivalent form of values of the those skilled in the art to the present invention
Modification each fall within the application claims limited range.
Claims (5)
1. a kind of dam foundation stratum lifts Deformation control structure, including being arranged on the dam foundation（9）On checkdam（1）, and be arranged on
The dam foundation（9）The antiseepage curtain of lower section（3）；The dam foundation（9）Lower section is divided into from top to bottom permeable stratum（6）, it is relatively waterproof
Layer（7）And permeable stratum（8）；Characterized in that, the checkdam（1）Inside it is provided with pressure release gallery（2）, and it is arranged on the dam foundation
（9）Interior multiple relief holes（4）；The relief hole（4）Top and pressure release gallery（2）Connection, the relief hole（4）Bottom position
In permeable stratum（8）It is interior.
2. dam foundation stratum according to claim 1 lifts Deformation control structure, it is characterised in that the relief hole（4）'s
Bottom is located at velatively waterproof layer（7）At the 5m-10m of lower section.
3. dam foundation stratum according to claim 1 and 2 lifts Deformation control structure, it is characterised in that the relief hole（4）
Inside it is disposed with plastics blind pipe（11）, the plastics blind pipe（11）It is wrapped with geotextiles（12）.
4. dam foundation stratum according to claim 1 and 2 lifts Deformation control structure, it is characterised in that the antiseepage curtain（3）
Sequentially pass through permeable stratum（6）, velatively waterproof layer（7）, the antiseepage curtain（3）Bottom be placed in permeable stratum（8）It is interior.
5. dam foundation stratum according to claim 1 and 2 lifts Deformation control structure, it is characterised in that the dam foundation（9）One
Also multiple relief holes are offered on the reservoir stability of side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224697.5A CN104790422B (en) | 2015-05-05 | 2015-05-05 | Control system for dam foundation stratum uplift deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224697.5A CN104790422B (en) | 2015-05-05 | 2015-05-05 | Control system for dam foundation stratum uplift deformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104790422A CN104790422A (en) | 2015-07-22 |
| CN104790422B true CN104790422B (en) | 2017-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510224697.5A Active CN104790422B (en) | 2015-05-05 | 2015-05-05 | Control system for dam foundation stratum uplift deformation |
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| CN (1) | CN104790422B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812528B (en) * | 2016-12-19 | 2019-11-15 | 中国神华能源股份有限公司 | The method of slope controlling stability |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2200220C2 (en) * | 2000-12-25 | 2003-03-10 | Открытое акционерное общество Красноярский проектно-изыскательский институт "Гидропроект" | Process of repair of multisectional concrete dam |
| WO2010109025A1 (en) * | 2009-03-25 | 2010-09-30 | Alberto Gonzalo Carracedo | Method for dimensioning and adapting the drainage network of weirs and dams and dimensioning and adaptation of drains |
| CN201598619U (en) * | 2010-01-22 | 2010-10-06 | 中国水电顾问集团华东勘测设计研究院 | Dam body water draining structure |
| RU2495190C2 (en) * | 2011-08-23 | 2013-10-10 | Публичное акционерное общество "Укргидропроект" | Gravity dam with expanded joints |
| CN204282309U (en) * | 2014-12-01 | 2015-04-22 | 嘉陵江亭子口水利水电开发有限公司 | Gravity dam deep layer antiseepage Against Sliding Stability structure |
| CN204590058U (en) * | 2015-05-05 | 2015-08-26 | 中国电建集团中南勘测设计研究院有限公司 | A kind of dam foundation stratum lifts Deformation control structure |
-
2015
- 2015-05-05 CN CN201510224697.5A patent/CN104790422B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2200220C2 (en) * | 2000-12-25 | 2003-03-10 | Открытое акционерное общество Красноярский проектно-изыскательский институт "Гидропроект" | Process of repair of multisectional concrete dam |
| WO2010109025A1 (en) * | 2009-03-25 | 2010-09-30 | Alberto Gonzalo Carracedo | Method for dimensioning and adapting the drainage network of weirs and dams and dimensioning and adaptation of drains |
| CN201598619U (en) * | 2010-01-22 | 2010-10-06 | 中国水电顾问集团华东勘测设计研究院 | Dam body water draining structure |
| RU2495190C2 (en) * | 2011-08-23 | 2013-10-10 | Публичное акционерное общество "Укргидропроект" | Gravity dam with expanded joints |
| CN204282309U (en) * | 2014-12-01 | 2015-04-22 | 嘉陵江亭子口水利水电开发有限公司 | Gravity dam deep layer antiseepage Against Sliding Stability structure |
| CN204590058U (en) * | 2015-05-05 | 2015-08-26 | 中国电建集团中南勘测设计研究院有限公司 | A kind of dam foundation stratum lifts Deformation control structure |
Non-Patent Citations (1)
| Title |
|---|
| 《向家坝水电站坝基渗控体系设计与动态优化调整》;樊凯等;《人民长江》;20150131;第46卷(第2期);第89-93页 * |
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|---|---|
| CN104790422A (en) | 2015-07-22 |
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