CN202730792U - Uplift pressure regulating and controlling device for dam foundation - Google Patents
Uplift pressure regulating and controlling device for dam foundation Download PDFInfo
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- CN202730792U CN202730792U CN 201220430096 CN201220430096U CN202730792U CN 202730792 U CN202730792 U CN 202730792U CN 201220430096 CN201220430096 CN 201220430096 CN 201220430096 U CN201220430096 U CN 201220430096U CN 202730792 U CN202730792 U CN 202730792U
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- dam foundation
- dam
- uplift
- drain
- uplift pressure
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Abstract
The utility model discloses an uplift pressure regulating and controlling device for a dam foundation. The uplift pressure regulating and controlling device comprises an uplift pressure monitoring device and a dam foundation drainage gallery (2), the uplift pressure monitoring device is arranged on the dam foundation, at least one drainage ditch (5) is arranged at the bottom of a side wall of the dam foundation drainage gallery (2), a plurality of drainage holes (4) are arranged at the bottom of the dam foundation drainage gallery (2), orifice devices (6) are arranged at orifices of the drainage holes (4) and are hermetically and fixedly connected with the orifices of the drainage holes (4), and controllable valves (3) are arranged on the orifice devices (6). By the uplift pressure regulating and controlling device, uplift pressure of the dam foundation and the seepage stability of the dam foundation can be artificially controlled, so that the uplift pressure of the dam foundation is guaranteed against exceeding standards, the requirement of a dam on stable stress is met, seepage quantities of the drainage holes of the dam foundation can be controlled, and risks of seepage failure of weak sandwich layers of the dam foundation are reduced.
Description
Technical field
The utility model relates to a kind of Uplift regulation device, is applicable to the concrete dam that the water conservancy and hydropower industry needs manual control dam foundation osmotic pressure and uplift pressure.
Background technology
Concrete Dam oozes the control system and generally is comprised of seepage prevention system and drainage system, and its main purpose is uplift pressure, osmotic pressure and the infiltration gradient that reduces Dam Foundation Rock, reduces leakage.Seepage prevention system often adopts horizontal leakage preventing, vertical seepage control.Horizontal leakage preventing generally adopts bedding, and bedding material comprises clay, geotextile, concrete etc.; Vertical seepage control generally has Cement Grouting Curtain, concrete cut, concrete cutoff wall etc.Drainage system is divided into horizontal drainage system, vertical drainage system etc.
Generally speaking, the system that conventional concrete dam all adopts anti-seepage and drainage to combine, the drain in dam foundation hole generally is in the free discharge state.The infiltration that freely overflow in the drain hole aperture along dam corridor internal drainage ditch, is flowed out outside the dam certainly, or pumps out outside the dam with water pump after concentrating the introducing collecting well.Theoretically, the discrepancy in elevation of the drain hole mouth of pipe and Dam Base Surface is exactly the uplift pressure of this position dam foundation.Consider that the drain in dam foundation hole generally is arranged in the dam foundation gallery, and the quantity of dam foundation gallery is limited, what drain hole neither continuous distributed in addition, about the 3m of interval, so theory analysis, the drain hole position can form a funnelform dropdown curve, and the Uplift at all the other positions then can be higher a little.
Consider the hole array pitch that the complexity, drain hole of seepage flow under foundation are arranged, and with reference to long-term design experiences and field data, regulation and stipulation uplift pressure design configuration and the corresponding reduction coefficient of different curtains and Drainage Design.Namely carry out the dam foundation according to the layout of the curtain of regulation and stipulation and drain hole and ooze the control design, just can carry out the computational analysis of corresponding dam stable stress according to the design uplift pressure figure that standard is supposed.Facts have proved that carry out the dam foundation by the layout of the curtain of regulation and stipulation and drain hole and ooze the control design, actual uplift pressure can not surpass design load, and certain affluence is arranged, the dam by this uplift pressure designs can guarantee safe.
The utility model content
The technical problems to be solved in the utility model is: covering down the many Concrete Dams of weak intercalated layer, leakage is excessive when the drain in dam foundation hole, when dam foundation weak intercalated layer seepage stability problem is relatively more outstanding, the problem that how could control artificially dam foundation seepage stability, both guaranteed that Uplift did not exceed standard yet, satisfy the requirement of dam stable stress, can control again drain in dam foundation hole leakage, to reduce the risk of dam foundation weak intercalated layer seepage failure.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of Uplift regulation device comprises the uplift pressure monitoring device and the drain in dam foundation gallery that are arranged in the dam foundation, and described uplift pressure monitoring device is the uplift pressure piezometer tube that is embedded in the uplift pressure osmometer of dam foundation foundation plane and/or is arranged on the drain in dam foundation gallery; The sidewall bottom of described drain in dam foundation gallery is provided with at least one gutter, and drain in dam foundation gallery bottom is provided with a plurality of drain holes, and place, drain hole aperture is provided with opening arrangement, and opening arrangement is fixedly connected with the drain hole orifice sealing; Be provided with controllable valve at opening arrangement.
The preferred autocontrol valve of described controllable valve, described autocontrol valve is connected with controlling equipment by cable.(also can be manual control valve)
Spacing between the described drain hole is preferably 2m-3m.
The below makes further explanation the utility model:
The opening arrangement of each drain hole is got rid of the water gutter of leading.
The utility model all arranges valve with all drain in dam foundation holes, then the size by controlling opening of valve, control the leakage in drain in dam foundation hole, the hydraulic gradient of then artificially regulating dam foundation weak intercalated layer is artificially regulated Uplift within tolerance band within permissible range.That is to say, by artificial adjusting drain hole valve opening, reach the balance between dam foundation seepage failure, leakage, the Uplift.
With conventional Concrete Dam drain hole contrast, the utility model all is provided with valve with all drain holes of the dam foundation, can strengthen or reduce the water amount of seepage in drain in dam foundation hole by the aperture of manual control valve, thereby the hydraulic gradient of control Dam Foundation Rock is no more than admissible value; In addition, after the water amount of seepage in drain in dam foundation hole changes by controlling opening of valve, Uplift equally also changes to some extent, can measure by the Uplift monitoring instrument that is embedded in foundation plane the size of Uplift, carries out the stable stress of computational analysis dam.And according to the computational analysis achievement, the valve opening in drain in dam foundation hole is further adjusted, can adjust manually, also can automatically adjust.By the circulation of above-mentioned each step, debug out the best aperture of different parts drain hole valve, finally reach stability of dam foundation, ess-strain, seepage stability three's overall balance, for the safe operation that guarantees dam lays the first stone.
Compared with prior art, advantage of the present utility model is:
By Uplift regulation device of the present utility model, can control artificially dam foundation seepage stability, both guarantee that Uplift does not exceed standard yet, satisfy the requirement of dam stable stress, can control again drain in dam foundation hole leakage, to reduce the risk of dam foundation weak intercalated layer seepage failure.
Description of drawings
Fig. 1 is the structural representation of a kind of Uplift regulation device of the present utility model, wherein, 1---the collector drain sidewall, 2---collector drain, 3---controllable valve, 4---drain hole, 5---the gutter, 6---opening arrangement, 7---the mortar shutoff.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described further.
Embodiment 1
A kind of Uplift regulation device, comprise the uplift pressure monitoring device and the drain in dam foundation gallery (2) that are arranged in the dam foundation, described uplift pressure monitoring device is to be embedded in the uplift pressure osmometer of dam foundation foundation plane and/or is the uplift pressure piezometer tube that is arranged on drain in dam foundation gallery (2); The sidewall bottom of described drain in dam foundation gallery (2) is provided with at least one gutter (5), drain in dam foundation gallery (2) bottom is provided with a plurality of drain holes (4), place, drain hole (4) aperture is provided with opening arrangement (6), and opening arrangement (6) is fixedly connected with drain hole (4) orifice sealing; Be provided with controllable valve (3) at opening arrangement (6).Spacing between the described drain hole (4) is 2m-3m.
Embodiment 2
Uplift control structure of the present utility model has been used for Jinsha jiang River to power station, family dam, this power plant dam height of dam 162m, and dam foundation weak intercalated layer is grown.After the dam foundation excavation was finished, dam foundation deep still remained with compresso-crushed zone and the nearly thick deflection nuclear section zone of fracture of 60m about thick 5m.Compresso-crushed zone, deflection nuclear section's zone of fracture and weak intercalated layer impermeabilisation damage capability are low, and dam foundation seepage stability problem is more outstanding.
After using the Uplift regulation device of the utility model embodiment 1, by the aperture of control valve, the water yield in control drain in dam foundation hole, and then the hydraulic gradient of the control dam foundation guarantee the poorly seepage stability of plastid of the dam foundation.And by the monitoring to Uplift, obtain the actual uplift pressure of the dam foundation, again by computational analysis, check the dam stable stress.By the circulation of above-mentioned each step, debug out the best aperture of different parts drain hole valve, finally reach the overall balance of stability of dam foundation, ess-strain, seepage stability.
Claims (3)
1. Uplift regulation device, comprise the uplift pressure monitoring device and the drain in dam foundation gallery (2) that are arranged on the dam foundation, described uplift pressure monitoring device is the uplift pressure piezometer tube that is embedded in the uplift pressure osmometer of dam foundation foundation plane and/or is arranged on drain in dam foundation gallery (2); The sidewall bottom of described drain in dam foundation gallery (2) is provided with at least one gutter (5), drain in dam foundation gallery (2) bottom is provided with a plurality of drain holes (4), place, drain hole (4) aperture is provided with opening arrangement (6), and opening arrangement (6) is fixedly connected with drain hole (4) orifice sealing; It is characterized in that, be provided with controllable valve (3) at opening arrangement (6).
2. described Uplift regulation device according to claim 1 is characterized in that described controllable valve (3) is autocontrol valve, and described autocontrol valve is connected with controlling equipment by cable.
3. described Uplift regulation device according to claim 1 is characterized in that the spacing between the described drain hole (4) is 2m-3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220430096 CN202730792U (en) | 2012-08-28 | 2012-08-28 | Uplift pressure regulating and controlling device for dam foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220430096 CN202730792U (en) | 2012-08-28 | 2012-08-28 | Uplift pressure regulating and controlling device for dam foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202730792U true CN202730792U (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220430096 Expired - Lifetime CN202730792U (en) | 2012-08-28 | 2012-08-28 | Uplift pressure regulating and controlling device for dam foundation |
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| CN (1) | CN202730792U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776894A (en) * | 2012-08-28 | 2012-11-14 | 中国水电顾问集团中南勘测设计研究院 | Dam foundation uplift pressure regulation device |
| CN103205987A (en) * | 2013-03-29 | 2013-07-17 | 葛洲坝集团试验检测有限公司 | Intelligent measuring and controlling system for seepage parameter of drain hole of dam |
| CN107268648A (en) * | 2017-06-14 | 2017-10-20 | 中国葛洲坝集团第六工程有限公司 | A kind of basement rock infiltration pump drainage method |
-
2012
- 2012-08-28 CN CN 201220430096 patent/CN202730792U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776894A (en) * | 2012-08-28 | 2012-11-14 | 中国水电顾问集团中南勘测设计研究院 | Dam foundation uplift pressure regulation device |
| CN103205987A (en) * | 2013-03-29 | 2013-07-17 | 葛洲坝集团试验检测有限公司 | Intelligent measuring and controlling system for seepage parameter of drain hole of dam |
| CN107268648A (en) * | 2017-06-14 | 2017-10-20 | 中国葛洲坝集团第六工程有限公司 | A kind of basement rock infiltration pump drainage method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER GROUP ZHONGNAN INVESTIGATION DESIGN + Free format text: FORMER NAME: HYDROCHINA ZHONGNAN ENGINEERING CORPORATION Owner name: HYDROCHINA ZHONGNAN ENGINEERING CORPORATION Free format text: FORMER NAME: ZHONGNAN PROSPECTING DESIGN INST. CHINA HYDRAUELECTRIC CONSULTANT GROUP |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Patentee after: HYDROCHINA ZHONGNAN ENGINEERING Corp. Address before: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Patentee before: Mid-South Hydroelectric Investigation & Design Institute of China Hydropower Engineering Consulting Group |
|
| CP03 | Change of name, title or address |
Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Patentee after: POWERCHINA ZHONGNAN ENGINEERING Corp.,Ltd. Address before: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Patentee before: HYDROCHINA ZHONGNAN ENGINEERING Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130213 |
|
| CX01 | Expiry of patent term |