CN204590058U - A kind of dam foundation stratum lifts Deformation control structure - Google Patents
A kind of dam foundation stratum lifts Deformation control structure Download PDFInfo
- Publication number
- CN204590058U CN204590058U CN201520283994.2U CN201520283994U CN204590058U CN 204590058 U CN204590058 U CN 204590058U CN 201520283994 U CN201520283994 U CN 201520283994U CN 204590058 U CN204590058 U CN 204590058U
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- stratum
- dam foundation
- control structure
- deformation control
- relief hole
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Abstract
The utility model discloses a kind of dam foundation stratum and lift Deformation control structure.Described dam foundation stratum lifts Deformation control structure and comprises the checkdam be arranged on the dam foundation; Permeable stratum, velatively waterproof layer and permeable stratum is divided into successively from top to bottom below the described dam foundation; Be provided with pressure release gallery in described checkdam, and be arranged on the multiple relief holes in the dam foundation; The top of described relief hole is communicated with pressure release gallery, and the bottom of this relief hole is positioned at permeable stratum.The utility model changes the distribution of stratum penetration, controls the deep layer draining pressure release that stratum produces seepage deformation, thus realizes reducing and eliminate the stratum that reservoir filling causes and lift distortion.
Description
Technical field
The utility model relates to a kind of dam foundation stratum and lifts Deformation control structure, belongs to Hydraulic and Hydro-Power Engineering field, especially for the Deformation control of Hydraulic and Hydro-Power Engineering dam foundation lifting.
Background technology
The uplift deformation that reservoir filling causes is the distinctive stratum deformation phenomenon of one in international and domestic hydroelectric project.Uplift deformation in various degree was all there is after China's copper street, river a strip of land between hills Hydropower Plant Reservoir retaining.
So far do not propose effective solution for this distortion, the comprehensive report of pertinent literature both at home and abroad, reservoir filling brings out stratum and produces the earth formation lifting distortion and be in permeable stratum the geologic structure being distributed with velatively waterproof layer.There is reservoir filling and change seepage field distribution near hydraulic engineering hinge, under specific geologic structure condition, producing vertical " lifting " distortion upwards by causing stratum near hinge.This distortion may bring adverse effect to the stability of reservoir stability, also may cause the Incoordinate deformation of checkdam, and then in dam structure, form new subsidiary stress, jeopardizes dam safety.
Utility model content
The stratum caused for existing reservoir filling lifts the present situation that deformation process technology lacks, the utility model aims to provide a kind of dam foundation stratum and lifts Deformation control structure, this Deformation control structure can change stratum penetration and distribute, controls the deep layer draining pressure release that stratum produces seepage deformation, thus the stratum realizing reducing and elimination reservoir filling causes lifts the object of distortion.
To achieve these goals, the technical scheme that the utility model adopts is:
A kind of dam foundation stratum lifts Deformation control structure, comprises the checkdam be arranged on the dam foundation; Permeable stratum, velatively waterproof layer and permeable stratum is divided into successively from top to bottom below the described dam foundation; Its design feature is, is provided with pressure release gallery in described checkdam, and is arranged on the multiple relief holes in the dam foundation; The top of described relief hole is communicated with pressure release gallery, and the bottom of this relief hole is positioned at permeable stratum.
Velatively waterproof layer described in the utility model refers to that basement rock permeability rate is less than 1.0Lu(Lv Rong) rock stratum.
Be below the technical scheme of further improvement of the utility model:
Further, the bottom of described relief hole is positioned at 5m-10m place below velatively waterproof layer.
Further, be furnished with blind pipe in described relief hole, this plastics blind pipe is wrapped with geotextiles.Thus, the seepage deformation destruction that plastics blind pipe causes to prevent long-term pressure release is installed in relief hole.
Preferably, described antiseepage curtain is successively through permeable stratum, velatively waterproof layer, and the bottom of this antiseepage curtain is placed in permeable stratum.
Further, the reservoir stability of described dam foundation side also offers multiple relief hole, to reach the object to the balanced pressure release of whole dam.
Compared with prior art, the beneficial effects of the utility model are: the utility model is by arranging relief hole to reduce the too high osmotic pressure produced in the earth formation, reduce and control the uplift deformation of the dam foundation, reduce the differential settlement produced between the different monoliths of checkdam and even same monolith different parts.
Uplift Deformation control structural configuration of the present utility model is reasonable in design, and structure is simple, easy to operate.
Below in conjunction with drawings and Examples, the utility model is further elaborated.
Accompanying drawing explanation
Fig. 1 is uplift deformation earth formation and the relief hole arrangement diagram of the utility model embodiment;
Fig. 2 is the constructional drawing of plastics blind pipe described in the utility model.
In the drawings
1-checkdam; 2-pressure release gallery; 3-antiseepage curtain; 4-relief hole; Relief hole length under 5-velatively waterproof layer; 6-permeable stratum; 7-velatively waterproof layer; 8-permeable stratum; The 9-dam foundation; 10-checkdam axis; 11-plastics blind pipe; 12-geotextiles.
Detailed description of the invention
A kind of dam foundation stratum lifts Deformation control structure, as shown in Figure 1, arranges pressure release gallery 2 in checkdam 1, arranges relief hole 4 by pressure release gallery in dam foundation stratum, and relief hole is about 5-10m through the length 5 of velatively waterproof layer 7.In relief hole 4 hole, plastics blind pipe 11 is installed, as shown in Figure 2, outside blind pipe, wraps up in geotextiles 12, prevent the dam foundation from producing seepage failure along relief hole 4 and reducing the bearing capacity of the dam foundation.The utility model reduces the mistake hypertonic pressure gathered in the permeable rock mass 8 of velatively waterproof layer less than 7 by relief hole 4, reduce the seepage water pressure acting on velatively waterproof layer 7 and pervious layer 6, realizes control or the reduction dam foundation and side slope surface and lifts deflection.By installing the outer plastics blind pipe 11 wrapping up in geotextiles 12 in spilled water hole 4, the particle accumulation that seepage flow is taken out of from stratum, near relief hole, stops the fine grained in stratum to produce a large amount of loss, and then causes foundation failure.
The content that above-described embodiment is illustrated should be understood to these embodiments only for being illustrated more clearly in the utility model, and be not used in restriction scope of the present utility model, after having read the utility model, the amendment of those skilled in the art to the various equivalent form of value of the present utility model has all fallen into the application's claims limited range.
Claims (5)
1. dam foundation stratum lifts a Deformation control structure, comprises the checkdam (1) be arranged on the dam foundation (9); The described dam foundation (9) below is divided into permeable stratum (6), velatively waterproof layer (7) and permeable stratum (8) from top to bottom successively; It is characterized in that, in described checkdam (1), be provided with pressure release gallery (6), and be arranged on the multiple relief holes (6) in the dam foundation (9); The top of described relief hole (6) is communicated with pressure release gallery (6), and the bottom of this relief hole (6) is positioned at permeable stratum (8).
2. dam foundation stratum according to claim 1 lifts Deformation control structure, it is characterized in that, the bottom of described relief hole (6) is positioned at 5m-10m place, velatively waterproof layer (7) below.
3. dam foundation stratum according to claim 1 and 2 lifts Deformation control structure, it is characterized in that, is furnished with blind pipe (11) in described relief hole (6), and this plastics blind pipe (11) is wrapped with geotextiles (12).
4. dam foundation stratum according to claim 1 and 2 lifts Deformation control structure, it is characterized in that, described antiseepage curtain (3) is successively through permeable stratum (6), velatively waterproof layer (7), and the bottom of this antiseepage curtain (3) is placed in permeable stratum (8).
5. dam foundation stratum according to claim 1 and 2 lifts Deformation control structure, it is characterized in that, the reservoir stability of the described dam foundation (9) side also offers multiple relief hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283994.2U CN204590058U (en) | 2015-05-05 | 2015-05-05 | A kind of dam foundation stratum lifts Deformation control structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520283994.2U CN204590058U (en) | 2015-05-05 | 2015-05-05 | A kind of dam foundation stratum lifts Deformation control structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204590058U true CN204590058U (en) | 2015-08-26 |
Family
ID=53926227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520283994.2U Withdrawn - After Issue CN204590058U (en) | 2015-05-05 | 2015-05-05 | A kind of dam foundation stratum lifts Deformation control structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204590058U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790422A (en) * | 2015-05-05 | 2015-07-22 | 中国电建集团中南勘测设计研究院有限公司 | Control system for dam foundation stratum uplift deformation |
| CN107220467A (en) * | 2017-07-07 | 2017-09-29 | 中国水利水电科学研究院 | The Forecasting Methodology of retaining phase storehouse bank rock side slope deformation |
-
2015
- 2015-05-05 CN CN201520283994.2U patent/CN204590058U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790422A (en) * | 2015-05-05 | 2015-07-22 | 中国电建集团中南勘测设计研究院有限公司 | Control system for dam foundation stratum uplift deformation |
| CN104790422B (en) * | 2015-05-05 | 2017-05-10 | 中国电建集团中南勘测设计研究院有限公司 | Control system for dam foundation stratum uplift deformation |
| CN107220467A (en) * | 2017-07-07 | 2017-09-29 | 中国水利水电科学研究院 | The Forecasting Methodology of retaining phase storehouse bank rock side slope deformation |
| CN107220467B (en) * | 2017-07-07 | 2020-03-27 | 中国水利水电科学研究院 | Prediction method for rock slope deformation of reservoir bank in water storage period |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150826 Effective date of abandoning: 20170510 |