CN204282384U - Processing structure for high-water-head karst cave crossing dam impervious curtain - Google Patents
Processing structure for high-water-head karst cave crossing dam impervious curtain Download PDFInfo
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- CN204282384U CN204282384U CN201420734586.XU CN201420734586U CN204282384U CN 204282384 U CN204282384 U CN 204282384U CN 201420734586 U CN201420734586 U CN 201420734586U CN 204282384 U CN204282384 U CN 204282384U
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- curtain
- solution cavity
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- water head
- pipe
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 claims abstract description 13
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 17
- 230000007774 longterm Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
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Abstract
The utility model discloses a processing structure of a high-head karst cave crossing dam seepage-proof curtain, which comprises a concrete plug arranged in the karst cave, wherein a vertical pressure equalizing pipe is arranged at the upstream of the concrete plug, and the end of the vertical pressure equalizing pipe is connected with a horizontal drainage pipe; the concrete plug is arranged on the axis of the curtain to plug the karst cave to form a closed curtain; the top of the vertical pressure equalizing pipe is as high as the highest reservoir water elevation, so that a front water head of the plug is not higher than the maximum designed water head of the curtain; the horizontal drainage pipe is effectively connected with the vertical flat pressing steel pipe, and water higher than the maximum designed water head of the curtain can be smoothly drained. The utility model discloses utilize vertical concora crush steel pipe and horizontal drain pipe to reduce the super design flood peak that end cap and curtain probably bore, guarantee all the time that end cap and curtain received water pressure and be no longer than the biggest design value, guarantee the long-term operation safety of end cap and curtain, concora crush measure safe and reliable, construction convenience can meet high-water head solution cavity at dam curtain and handle the extensive popularization and application.
Description
Technical field
The utility model relates to the process structure that a kind of high water head solution cavity passes through seepage control of dam curtain, belongs to dam engineering technical field.
Background technology
In Dam Heavy Curtain Grouting tunnel excavation or Curtain Grouting Construction process, often meet solution cavity, particularly in limestone area, solution cavity is grown commonplace.At present, the processing mode of meeting solution cavity is generally: carry out backfill shutoff to little solution cavity, cavern arranges concrete plug or concrete plug, pumps into flowing concrete, form sack grouting etc.If anhydrous or found out that solution cavity input elevation is lower than reservoir level, then carry out shutoff process to solution cavity as stated above in solution cavity; If but solution cavity growth scale is large, be not easy to find out solution cavity import, or solution cavity input elevation higher than reservoir level time, then in later stage dam running due to impacts such as rainfalls, make plug and curtain may bear hydraulic pressure effect higher than maximum storehouse water design head, cause plug and curtain to there is security risk.
Utility model content
For solving the problem, the utility model provides the process structure that a kind of high water head solution cavity passes through seepage control of dam curtain.Thus elimination solution cavity plug and curtain may bear the risk of the hydraulic pressure effect higher than design head.
The utility model is achieved by following technical solution.
A kind of high water head solution cavity passes through the process structure of seepage control of dam curtain, comprise the concrete plug be arranged in solution cavity, the upstream of described concrete plug is provided with vertical concora crush steel pipe, and described vertical concora crush steel pipe lower end is communicated with solution cavity, and upper end is connected with horizontal drain pipe.
Described concrete plug is arranged on curtain axis, and shutoff solution cavity forms closed curtain.
Described vertical concora crush steel pipe top is provided with horizontal drainage pipe construction hole.
Described vertical concora crush steel pipe top elevation equals most high basin water elevation, and is connected with horizontal drainage pipe construction hole.
Described horizontal drain pipe is communicated with vertical concora crush steel pipe.
Described horizontal drain pipe is provided with the gradient.
Described concrete plug adopts slightly expanded concrete.
The beneficial effects of the utility model are:
Compared with the simple shutoff of traditional solution cavity, the super design head that the utility model utilizes vertical concora crush steel pipe and horizontal drain pipe plug and curtain may be born reduces, all the time ensure that suffered by plug and curtain, hydraulic pressure is no more than design maximum value, ensure the longtime running safety of plug and curtain, concora crush measure is safe and reliable, easy construction, treatment effect is good, can meet wide popularization and application in high water head karst cave treatment at dam curtain.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-concrete plug, the vertical concora crush steel pipe of 2-, 3-horizontal drain pipe, 4-solution cavity, 5-curtain axis, 6-horizontal drainage pipe construction hole.
Detailed description of the invention
The technical solution of the utility model is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 1, a kind of high water head solution cavity described in the utility model passes through the process structure of seepage control of dam curtain, comprise the concrete plug 1 be arranged in solution cavity 4, the upstream of described concrete plug 1 is provided with vertical concora crush steel pipe 2, described vertical concora crush steel pipe 2 lower end is communicated with solution cavity 4, steel pipe top elevation and most high basin water elevation are with high, and before ensureing concrete plug 1, head is not higher than curtain design maximum head; Vertical concora crush steel pipe 2 upper end is connected with horizontal drain pipe 3.
Adopt the technical program, the extensive solution cavity of high water head across curtain is met along the line for seepage control of dam curtain, when cannot find out solution cavity input elevation or input elevation higher than maximum storehouse water elevation, by arranging the concrete plug 1 of certain length at solution cavity 4 through curtain axis 5 place, and be communicated in the setting of concrete plug 1 upstream side the row of horizontal pressure pipe designing maximum reservoir level after concrete plug 1 has been constructed.Thus the super design head that concrete plug 1 and curtain may be born reduces, ensure that suffered by concrete plug 1 and curtain, hydraulic pressure is no more than design maximum value, ensures the longtime running safety of plug and curtain all the time.
Described concrete plug 1 is arranged on curtain axis 5, and shutoff solution cavity 4 forms closed curtain.Its length meets the stability of bearing maximum storehouse water head.
Described vertical concora crush steel pipe 2 top is provided with horizontal drainage pipe construction hole 6.For construction level gutter 3.
Described vertical concora crush steel pipe 2 crest level equals most high basin water elevation, and is connected with horizontal drainage pipe construction hole 6.
Described horizontal drain pipe 3 is communicated with vertical concora crush steel pipe 2.
Described horizontal drain pipe 3 is provided with the gradient.Smoothly the water higher than curtain design maximum head can be drained into reservoir or other places.
Described concrete plug 1 adopts slightly expanded concrete.
As shown in Figure 1, high water head solution cavity described in the utility model is adopted to pass through the process structure of seepage control of dam curtain, when meeting extensive solution cavity in Dam Heavy Curtain Grouting tunnel excavation process or Curtain Grouting Construction process: by concrete plug 1 of constructing after curtain axis 5 place clears up solution cavity, after concrete plug 1 completes, arrange that vertical concora crush steel pipe 2 passes to design maximum storehouse water elevation at concrete plug 1 upstream side, and be connected to the horizontal drain pipe 3 of certain slope in vertical concora crush steel pipe 2 end.The super maximum storehouse water head utilizing vertical concora crush steel pipe 2 and horizontal drain pipe 3 concrete plug 1 and curtain may be born reduces, all the time ensure that suffered by concrete plug 1 and curtain, hydraulic pressure is no more than design maximum value, ensure the longtime running safety of concrete plug 1 and curtain, concora crush measure is safe and reliable, easy construction, this technical scheme is applied in multiple engineering, treatment effect is good, and the dam runtime is safe and reliable.
Claims (7)
1. a high water head solution cavity passes through the process structure of seepage control of dam curtain, it is characterized in that: comprise the concrete plug (1) be arranged in solution cavity (4), the upstream of described concrete plug (1) is provided with vertical concora crush steel pipe (2), and described vertical concora crush steel pipe (2) end is connected with horizontal drain pipe (3).
2. a kind of high water head solution cavity according to claim 1 passes through the process structure of seepage control of dam curtain, it is characterized in that: described concrete plug (1) is arranged on curtain axis (5), and shutoff solution cavity (4) forms closed curtain.
3. a kind of high water head solution cavity according to claim 1 passes through the process structure of seepage control of dam curtain, it is characterized in that: described vertical concora crush steel pipe (2) top is provided with horizontal drainage pipe construction hole (6).
4. a kind of high water head solution cavity according to claim 1 passes through the process structure of seepage control of dam curtain, it is characterized in that: described vertical concora crush steel pipe (2) is arranged in plug upstream side, steel pipe top elevation and most high basin water elevation with high, and are connected with horizontal drainage pipe construction hole (6).
5. a kind of high water head solution cavity according to claim 1 passes through the process structure of seepage control of dam curtain, it is characterized in that: described horizontal drain pipe (3) is communicated with vertical concora crush steel pipe (2).
6. a kind of high water head solution cavity according to claim 1 passes through the process structure of seepage control of dam curtain, it is characterized in that: described horizontal drain pipe (3) is provided with the gradient.
7. a kind of high water head solution cavity according to claim 1 passes through the process structure of seepage control of dam curtain, it is characterized in that: described concrete plug (1) adopts slightly expanded concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420734586.XU CN204282384U (en) | 2014-11-27 | 2014-11-27 | Processing structure for high-water-head karst cave crossing dam impervious curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420734586.XU CN204282384U (en) | 2014-11-27 | 2014-11-27 | Processing structure for high-water-head karst cave crossing dam impervious curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204282384U true CN204282384U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420734586.XU Active CN204282384U (en) | 2014-11-27 | 2014-11-27 | Processing structure for high-water-head karst cave crossing dam impervious curtain |
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| CN (1) | CN204282384U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869351A (en) * | 2017-11-15 | 2018-04-03 | 中国水利水电第十工程局有限公司 | A kind of method of the high narrow large-scale solution cavity Cavity treatment security protection of type |
| CN107975018A (en) * | 2017-12-05 | 2018-05-01 | 中国电建集团贵阳勘测设计研究院有限公司 | Method and structure for improving external pressure resistance stability of pressure steel pipe |
-
2014
- 2014-11-27 CN CN201420734586.XU patent/CN204282384U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107869351A (en) * | 2017-11-15 | 2018-04-03 | 中国水利水电第十工程局有限公司 | A kind of method of the high narrow large-scale solution cavity Cavity treatment security protection of type |
| CN107869351B (en) * | 2017-11-15 | 2019-07-19 | 中国水利水电第十一工程局有限公司 | A kind of method of high narrow type large size solution cavity Cavity treatment security protection |
| CN107975018A (en) * | 2017-12-05 | 2018-05-01 | 中国电建集团贵阳勘测设计研究院有限公司 | Method and structure for improving external pressure resistance stability of pressure steel pipe |
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