CN116065539A - Dam body drainage structure of hundred-meter-level homogeneous soil dam high downstream water level - Google Patents
Dam body drainage structure of hundred-meter-level homogeneous soil dam high downstream water level Download PDFInfo
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- CN116065539A CN116065539A CN202310108628.2A CN202310108628A CN116065539A CN 116065539 A CN116065539 A CN 116065539A CN 202310108628 A CN202310108628 A CN 202310108628A CN 116065539 A CN116065539 A CN 116065539A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000002689 soil Substances 0.000 title description 9
- 238000001914 filtration Methods 0.000 claims description 14
- 239000004575 stone Substances 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 5
- 239000004746 geotextile Substances 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 abstract description 21
- 238000001764 infiltration Methods 0.000 abstract description 21
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a dam body drainage structure of a hundred-meter-level homogeneous earth dam high downstream water level, which comprises a drainage body arranged in the dam body and downstream, wherein the drainage body comprises: the prismatic drainage body, the horizontal drainage body and the vertical drainage body; the prismatic drainage body is arranged at the downstream of the homogeneous earth dam body; the vertical drainage body is arranged at the middle and downstream of the homogeneous earth dam body; the horizontal drainage body is arranged between the prismatic drainage body and the vertical drainage body and is respectively communicated with the vertical drainage body and the prismatic drainage body. The invention adopts the comprehensive drainage mode formed by combining the three drainage modes of the vertical drainage body, the horizontal drainage body and the prismatic drainage body, solves the technical problem of dam drainage when the level of the hundred-meter-level homogeneous earth dam is high and low, effectively reduces the infiltration line of the dam, enhances the stability of the downstream dam slope, reduces the infiltration ratio drop of the escape point of the infiltration line, avoids the occurrence of dam infiltration damage, and ensures the seepage safety of the hundred-meter-level homogeneous earth dam.
Description
Technical Field
The invention discloses a dam body drainage structure of a hundred-meter-level homogeneous earth dam high downstream water level, and belongs to the technical field of water conservancy and hydropower.
Background
The homogeneous earth dam is also called a single earth dam, and is formed by filling a single earth material, and the earth material filled in the earth dam body is an impermeable body, so that the permeability coefficient is smaller, and the infiltration line of the dam body is generally higher. The height of the dam body infiltration line has great influence on the stress of the dam body, the shear strength of soil materials, the stability of a dam slope and the like.
The purpose of setting up the dam body drainage is in order to in time discharge the pore water among the soil material granule in the dam body, reduces dam body pore water pressure, reduces the dam body infiltration line to increase the dam slope stability, control seepage flow, prevent to take place the infiltration and destroy, protect the dam slope.
The dam body drainage design of the high downstream water level of the conventional homogeneous dam is mostly a medium-low dam and is not available for reference by engineering experience, and the conventional dam body drainage type is not optimal for the high downstream water level of the homogeneous soil dam and cannot effectively solve the safety problems of dam body drainage and seepage during the high downstream water level.
Disclosure of Invention
An object of the application is to provide a dam body drainage structures of hundred-meter level homogeneity earth dam to solve the drainage problem of hundred-meter level earth dam high low reaches water level, reduce hundred-meter level homogeneity earth dam body infiltration line. In order to achieve the purpose, the invention provides a dam body drainage structure of a hundred-meter-level homogeneous earth dam with high downstream water level, which comprises the following specific scheme:
the utility model provides a dam body drainage structures of high low reaches water level of hundred meters level homogeneity earth dam, includes the drainage body of setting in the inside and low reaches of dam body, the drainage body includes: the prismatic drainage body, the horizontal drainage body and the vertical drainage body;
the prismatic drainage body is arranged at the downstream of the homogeneous earth dam body;
the vertical drainage body is arranged at the middle and downstream of the homogeneous earth dam body;
the horizontal drainage body is arranged between the prismatic drainage body and the vertical drainage body and is respectively communicated with the vertical drainage body and the prismatic drainage body;
preferably, the bottoms of the prismatic drainage bodies and the horizontal drainage bodies are higher than the dam foundation horizontal line of the dam body.
Preferably, the bottom elevations of the prismatic drainage body and the horizontal drainage body are lower than the downstream normal water level and are positioned at the middle lower part of the dam body.
Preferably, the top elevation of the prismatic drainage body is 0.5 m-1.5 m higher than the downstream highest water level.
Preferably, the filter further comprises a transition layer and a reverse filtering layer;
the transition layer and the reverse filtering layer are arranged on the outer side of the drainage body, and the drainage body is sequentially distributed towards the dam body.
Preferably, soil and stone backfilling is arranged below the bottom of the prismatic drainage body and below the dam body.
Preferably, the drainage body is built from graded block stones.
Preferably, the transition layer is filled with graded sand stone materials; the reverse filtering layer is filled with the graded sand stone or laid with geotextile.
The beneficial effects are that: the invention adopts the comprehensive drainage mode formed by combining the three drainage modes of the vertical drainage body, the horizontal drainage body and the prismatic drainage body, solves the technical problem of dam drainage when the level of the hundred-meter-level homogeneous earth dam is high and low, effectively reduces the infiltration line of the dam, enhances the stability of the downstream dam slope, reduces the infiltration ratio drop of the escape point of the infiltration line, avoids the occurrence of dam infiltration damage, and ensures the seepage safety of the hundred-meter-level homogeneous earth dam.
Drawings
FIG. 1 is a schematic cross-sectional view of a soil dam drainage body structure of the present invention.
In the figure: 1. a vertical drainage body; 2. a horizontal drainage body; 3. prismatic drainage body; 4. a reverse filtration layer; 5. a transition layer; 6. a dam body; 7. earth and stone.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples are intended for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in figure 1, the cross section of the soil dam drainage body structure is schematic, the invention is suitable for a hundred-meter-level homogeneous soil dam, the dam height is 80 meters, 90 meters, 100 meters, 110 meters and the like, and the downstream water level is 1/4 or more higher than the dam height. In one embodiment, the dam height of the homogeneous dam is 86 meters, the downstream water level is located at 22 meters of the dam height, and the dam body drainage structure of the provided homogeneous earth dam comprises drainage bodies arranged inside and downstream of the dam body 6, wherein the drainage bodies comprise: the prismatic drainage body 3, the horizontal drainage body 2 and the vertical drainage body 1;
the prismatic drainage body is arranged at the downstream of the homogeneous earth dam body; the vertical drainage body is arranged at the middle and downstream of the homogeneous earth dam body; the horizontal drainage body 2 is arranged between the prismatic drainage body 3 and the vertical drainage body 1 and is respectively communicated with the vertical drainage body 1 and the prismatic drainage body 3; the vertical drainage body 1 is inclined upstream, the included angle between the vertical drainage body and the horizontal drainage body is larger than 90 degrees, and the height of the vertical drainage body is calculated and determined according to the dam height and seepage.
The comprehensive drainage type formed by combining the vertical drainage body 1, the horizontal drainage body 2 and the prismatic drainage body 3 is adopted in the embodiment, so that the technical problem of dam drainage when the level of the hundred-meter-level homogeneous earth dam is high in downstream water level is solved, the dam infiltration line is effectively reduced, the stability of downstream dam slopes is enhanced, the infiltration ratio of the infiltration line escape points is reduced, the occurrence of dam infiltration damage is avoided, and the dam seepage safety of the hundred-meter-level homogeneous earth dam is ensured.
The bottoms of the prismatic water draining bodies 3 and the horizontal water draining bodies 2 are higher than the dam foundation horizontal line of the dam body, the heights of the prismatic water draining bodies 3 and the horizontal water draining bodies 2 are lower than the downstream normal water level, and the heights of the tops of the prismatic water draining bodies 3 are higher than the downstream highest water level by 0.5 m-1.5 m.
The drainage body lifting method is adopted, so that the drainage function of the homogeneous earth dam body 6 can be completed better, the method is suitable for the dam body drainage of a high-downstream water level homogeneous earth dam, meanwhile, the use amount of stone for building the drainage body can be reduced, the use amount of the transition layer 5 and the reverse filtering layer 4 is reduced, the building cost of the drainage body is greatly reduced, and the cost is saved.
The drainage body also comprises a transition layer 5 and a reverse filtering layer 4; the transition layer 5 and the reverse filtering layer 4 are arranged outside the drainage body and are sequentially distributed from the outside of the drainage body to the direction of the dam body. The earth and stone 7 is arranged at the downstream of the bottom dam of the prismatic drainage body 3. The drainage body is built by graded block stones. The transition layer 5 and the reverse filtering layer 4 are filled with graded sand stone, and the reverse filtering layer 4 can select geotechnical cloth as a reverse filtering material.
The comprehensive drainage mode formed by combining the vertical drainage body, the horizontal drainage body and the prismatic drainage body is adopted in the embodiment, so that the technical problem of dam drainage when the level of the hundred-meter-level homogeneous earth dam is high in downstream water level is solved, the dam infiltration line is effectively reduced, the stability of downstream dam slopes is enhanced, the infiltration ratio of the infiltration line escape points is reduced, the occurrence of dam infiltration damage is avoided, and the dam seepage safety of the hundred-meter-level homogeneous earth dam is ensured. The method for lifting the drainage body is adopted, so that the drainage function of the dam body of the homogeneous earth dam can be better completed, the method is suitable for the dam body drainage of the high-downstream water level homogeneous earth dam, meanwhile, the use amount of stone for building the drainage body can be reduced, the use amount of stone for a transition layer and a reverse filtering layer is reduced, the building cost of the drainage body is greatly reduced, and the cost is saved.
The above examples illustrate only one embodiment of the invention, which is described in more detail and is not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention should be determined by the appended claims.
Claims (8)
1. The utility model provides a dam body drainage structures of hundred meters level homogeneity earth dam high low reaches water level which characterized in that, including setting up the drainage body in the inside and low reaches of dam body, the drainage body includes: the prismatic drainage body, the horizontal drainage body and the vertical drainage body;
the prismatic drainage body is arranged at the downstream of the homogeneous earth dam body;
the vertical drainage body is arranged at the middle and downstream of the homogeneous earth dam body;
the horizontal drainage body is arranged between the prismatic drainage body and the vertical drainage body and is respectively communicated with the vertical drainage body and the prismatic drainage body.
2. The dam drainage structure of a level of water downstream of a hundred-meter grade homogeneous earth dam of claim 1, wherein bottoms of the prismatic drainage bodies and the horizontal drainage bodies are higher than a dam foundation level of the dam.
3. The dam drainage structure of claim 1, wherein the bottom elevations of the prismatic drainage body and the horizontal drainage body are lower than the downstream normal water level and are positioned at the middle lower part of the dam.
4. The dam drainage structure of a hundred-meter-level homogeneous earth dam with a high downstream water level according to claim 1, wherein the top elevation of the prismatic drainage body is 0.5 m-1.5 m higher than the highest downstream water level.
5. The dam body drainage structure of a hundred-meter grade homogeneous earth dam high downstream water level of claim 1, further comprising a transition layer and a reverse filtration layer;
the transition layer and the reverse filtering layer are arranged on the outer side of the drainage body, and the drainage body is sequentially distributed towards the dam body.
6. The dam body drainage structure of the hundred-meter-grade homogeneous earth dam according to claim 1, wherein earth and stone backfill is arranged below the bottom of the prismatic drainage body and downstream of the dam body.
7. A dam body drainage structure of a level of water downstream of a hundred-meter grade homogeneous earth dam according to claim 3, wherein said drainage body is built of graded block stone.
8. The dam body drainage structure of a hundred-meter grade homogeneous earth dam of claim 7, wherein the transition layer is filled with graded sand; the reverse filtering layer is filled with the graded sand stone or laid with geotextile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310108628.2A CN116065539A (en) | 2023-02-14 | 2023-02-14 | Dam body drainage structure of hundred-meter-level homogeneous soil dam high downstream water level |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310108628.2A CN116065539A (en) | 2023-02-14 | 2023-02-14 | Dam body drainage structure of hundred-meter-level homogeneous soil dam high downstream water level |
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| CN116065539A true CN116065539A (en) | 2023-05-05 |
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| CN202310108628.2A Pending CN116065539A (en) | 2023-02-14 | 2023-02-14 | Dam body drainage structure of hundred-meter-level homogeneous soil dam high downstream water level |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2016165C1 (en) * | 1990-03-23 | 1994-07-15 | Белорусская государственная политехническая академия | Drainage of an earthen dam based on a watertight foundation |
| CN106149640A (en) * | 2016-08-25 | 2016-11-23 | 中国电建集团西北勘测设计研究院有限公司 | Improve method and the double-drainage body rock of rock infiltration security |
| CN106337425A (en) * | 2016-08-31 | 2017-01-18 | 中国电建集团西北勘测设计研究院有限公司 | Precast concrete drainage structure in dam body of rock-fill dam and construction method |
| CN108035318A (en) * | 2017-12-28 | 2018-05-15 | 中国葛洲坝集团第二工程有限公司 | The construction method of the dam body water draining structure of homogeneous earth dam |
| CN109750655A (en) * | 2018-12-19 | 2019-05-14 | 中国水利水电第五工程局有限公司 | A kind of homogeneous earth dam axis of dam downstream vertical row water layer and construction method |
| CN112195874A (en) * | 2020-09-08 | 2021-01-08 | 中国电建集团西北勘测设计研究院有限公司 | High homogeneity dam of dispersion soil |
| CN216238415U (en) * | 2021-10-27 | 2022-04-08 | 湖北盛达泰水利水电工程有限公司 | Dam body drainage structure of water conservancy homogeneity |
-
2023
- 2023-02-14 CN CN202310108628.2A patent/CN116065539A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2016165C1 (en) * | 1990-03-23 | 1994-07-15 | Белорусская государственная политехническая академия | Drainage of an earthen dam based on a watertight foundation |
| CN106149640A (en) * | 2016-08-25 | 2016-11-23 | 中国电建集团西北勘测设计研究院有限公司 | Improve method and the double-drainage body rock of rock infiltration security |
| CN106337425A (en) * | 2016-08-31 | 2017-01-18 | 中国电建集团西北勘测设计研究院有限公司 | Precast concrete drainage structure in dam body of rock-fill dam and construction method |
| CN108035318A (en) * | 2017-12-28 | 2018-05-15 | 中国葛洲坝集团第二工程有限公司 | The construction method of the dam body water draining structure of homogeneous earth dam |
| CN109750655A (en) * | 2018-12-19 | 2019-05-14 | 中国水利水电第五工程局有限公司 | A kind of homogeneous earth dam axis of dam downstream vertical row water layer and construction method |
| CN112195874A (en) * | 2020-09-08 | 2021-01-08 | 中国电建集团西北勘测设计研究院有限公司 | High homogeneity dam of dispersion soil |
| CN216238415U (en) * | 2021-10-27 | 2022-04-08 | 湖北盛达泰水利水电工程有限公司 | Dam body drainage structure of water conservancy homogeneity |
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