CN202181539U - Dam body seepage monitoring structure used for earth-rock dam with abandoned dreg site arranged behind - Google Patents
Dam body seepage monitoring structure used for earth-rock dam with abandoned dreg site arranged behind Download PDFInfo
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- CN202181539U CN202181539U CN2011202184374U CN201120218437U CN202181539U CN 202181539 U CN202181539 U CN 202181539U CN 2011202184374 U CN2011202184374 U CN 2011202184374U CN 201120218437 U CN201120218437 U CN 201120218437U CN 202181539 U CN202181539 U CN 202181539U
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Abstract
The utility model relates to a dam body seepage monitoring structure used for an earth-rock dam with an abandoned dreg site arranged behind. The utility model aims at providing the dam body seepage monitoring structure used for the earth-rock dam with the abandoned dreg site arranged behind, which can effectively and accurately measure the seepage amount of the dam and guarantee that the abandoned dreg site arranged behind the dam can drain smoothly forever. The technical scheme for solving the problem is as follows: the dam body seepage monitoring structure used for the earth-rock dam with the abandoned dreg site arranged behind comprises the abandoned dreg site and a water-permeating stone-piling area below the abandoned dreg site; concrete retaining wall is poured at the dam foot at the downstream of the dam body and in the water-permeating stone-piling area; a water-collecting box culvert vertical to the direction of water flow is poured at the upstream side of the concrete retaining wall; concrete longitudinal water-draining box culverts are usually embedded at the downstream side of the concrete retaining wall and in the water-permeating stone-piling area; water drain pipes and a sediment discharge pipe which are communicated with the water-collecting box culvert and the water-draining box culverts are embedded in the concrete retaining wall; a plurality of through holes are reserved on a top plate and a side plate at the upstream of the water-collecting box culvert; water-collecting pipes are embedded in the top plate and the side plate at the upstream of the water-collecting box culvert; and a water-measuring weir is arranged in the water-draining box culvert. The dam body seepage monitoring structure is mainly suitable for the earth-rock dam with the abandoned dreg site arranged behind.
Description
Technical field
The utility model relates to the earth and rockfill dam dam body seepage monitoring structure of establishing the waste field behind a kind of dam, mainly is applicable to the earth and rockfill dam of establishing the waste field behind the dam.
Background technology
In water power hydraulic engineering, the especially pumped storage power plant,, often adopt the layout pattern of establishing the waste field after the Earth and Rockfill Dam in order to save the engineering land used.In order to guarantee dam dam body and two sides massif infiltration discharge smoothly, general meeting is the certain thickness permeable stockpile of base foundation making in the waste field, and piezometer tube is buried at the base of dam position underground in downstream simultaneously, calculates the dam body seepage discharge according to the piezometer tube reading.
There is following problem in method for arranging like this: at first, can't accurately measure earth and rockfill dam dam body seepage discharge, and not high according to piezometer tube reading reckoning value precision; In addition because waste field bottom fine grained deposits gradually, for years after, the drainage effect in permeable enrockment district also can decrease, there is certain potential safety hazard in the dam operation.How both reached and can effectively, accurately measure the dam infiltration amount through certain measure, guarantee the dam again simultaneously after the permanent draining in waste field unobstructed, be an important technology that is provided with behind the dam in the earth and rockfill dam design of waste field.
Summary of the invention
The technical problem that the utility model will solve is: the earth and rockfill dam dam body seepage monitoring structure of establishing the waste field behind a kind of dam is provided to the problem of above-mentioned existence; Can effectively, accurately measure the dam infiltration amount both to reach, guarantee the unobstructed purpose of the permanent draining in waste field behind the dam simultaneously again.
The technical scheme that the utility model adopted is: the earth and rockfill dam dam body seepage monitoring structure of establishing the waste field behind the dam; The permeable enrockment district that comprises the waste field and be positioned at its below; It is characterized in that: fluid concrete barricade in base of dam place, said dam body downstream, the permeable enrockment district, the box culvert that catchments that this barricade upstream side cast is arranged perpendicular to water (flow) direction, the elongated concrete longitudinal drainage box culvert of burying underground in downstream, the permeable enrockment district; Bury the gutter and the mud pipe of culvert of connected set water tank and Box-shaped Drainage Culvert in the said barricade underground; Said box culvert top board and several through holes of upper reaches side plate reservation of catchmenting, and bury header underground, weir is set in the Box-shaped Drainage Culvert.
Said wall height is 3m, and thickness is 1-2m.
The width of said Box-shaped Drainage Culvert is 1.8-2.0m, highly is 2-2.2m, its downstream the gradient i that has a down dip of side be 1%-3%.
Said Box-shaped Drainage Culvert top and both sides are reserved with several water inlet through holes.
The thickness in permeable enrockment district, said Box-shaped Drainage Culvert top is 2-3m.
The length that said gutter stretches in the Box-shaped Drainage Culvert is 2m.
The foundation grouting of said barricade arranged beneath.
The beneficial effect of the utility model is: the utility model is at earth and rockfill dam base of dam fluid concrete barricade; And swim side above that and arrange the box culvert that catchments; The infiltration of the collection dam foundation; And utilize the inner pipe laying of barricade seep water concentratedly to cause the Box-shaped Drainage Culvert that is positioned at the barricade downstream, can accurately measure the dam body seepage discharge through the weir that is located in the Box-shaped Drainage Culvert; The size of Box-shaped Drainage Culvert need satisfy personnel and pass in and out requirement, and the staff can get at any time, understands earth-rock dam seepage amount situation in real time; In addition, Box-shaped Drainage Culvert can doublely be done the usefulness of dam body draining simultaneously, and its drainability far is better than permeable stockpile, when the dam body seepage discharge is big, utilizes the stronger drainability of Box-shaped Drainage Culvert can in time discharge infiltration, guarantees the safe operation of permanent building.
Description of drawings
Fig. 1 is the utility model longitudinal section sketch map.
Fig. 2 is the A portion enlarged drawing of Fig. 1.
Fig. 3 is that the B-B of Fig. 1 is to sectional drawing.
The specific embodiment
Like Fig. 1-shown in Figure 3; The permeable enrockment district 9 that present embodiment comprises waste field 10 and is positioned at this below, waste field, fluid concrete barricade 3 in the riverbed lowest part of said earth and rockfill dam dam body downstream base of dam, the permeable enrockment district 9 can be if necessary in said barricade arranged beneath foundation grouting 17; To increase the stability of barricade; In this example, barricade 3 highly is 1-2m, and arranges perpendicular to water (flow) direction for 3m, thickness; The steel concrete that the cast of said barricade 3 upstream sides fuses the with it box culvert 2 that catchments; And arrange perpendicular to water (flow) direction equally; Said box culvert 2 top boards and several through holes of upper reaches side plate reservation of catchmenting; And bury the PVC header 16 (protection of head outsourcing geotextiles) of diameter 10mm underground, be used for the dam foundation is seeped water centralized collection to the box culvert 2 that catchments; Elongated vertically (along water (flow) direction) Box-shaped Drainage Culvert 4 of concrete of burying underground in said barricade 3 downstreams, the permeable enrockment district 9; Its size need guarantee that the staff can normally pass through; The width of Box-shaped Drainage Culvert 4 is 1.8-2.0m in this example; Highly be 2-2.2m, its downstream the gradient i that has a down dip of side be 1%-3% (as far as possible arranging) along river topography; Bury the gutter 5 and mud pipe 6 of culvert 2 of connected set water tank and Box-shaped Drainage Culvert 4 in the said barricade 3 underground; Wherein mud pipe 6 quantity are one; The quantity of gutter 5 is confirmed according to the dam Dam Foundation Seepage amount of rough estimate; And stretching into Box-shaped Drainage Culvert 4 inner length is 2m, is used for the infiltration that concentrates in the box culvert 2 that catchments is caused in the Box-shaped Drainage Culvert 4; In the said Box-shaped Drainage Culvert 4 weir 8 is set, the monitoring personnel get into Box-shaped Drainage Culvert 4, can timely and effective, accurately measure the dam body seepage discharge.
At Box-shaped Drainage Culvert 4 tops and both sides be reserved with several water inlets through hole 4-1 so that the water in the Box-shaped Drainage Culvert 4 peripheral permeable enrockment districts 9 can get in Box-shaped Drainage Culvert 4 through this through hole, thereby strengthen drainability.
The thickness in permeable enrockment district, said Box-shaped Drainage Culvert 4 tops 9 is 2-3m.
The construction sequence of present embodiment is following:
A, section downstream, the earth and rockfill dam riverbed dam foundation 11 excavations put in place, and concrete guard wall and downstream drainage box culvert basis 1 excavation are accomplished.
B, the joining place casting reinforced concrete box culvert 2 that catchments on the dam foundation 11 and basis 1; The dam foundation 11 is step-like layout with basis 1 in this example; And the dam foundation 11 is a little more than basis 1, and the box culvert 2 that catchments is located on basic 1 front end, and its upper reaches side plate is close to the vertical drop face layout of step; Said box culvert 2 top boards and the upper reaches side plate of catchmenting reserved several through holes, and buries the PVC header 16 (protection of head outsourcing geotextiles) of diameter 10mm underground, and the distance between adjacent two headers 16 is 100mm.
The concrete guard wall 3 that c, the box culvert 2 downstreams cast of catchmenting fuse with it; Form the cavity that catchments between the two; (be seamless steel pipe simultaneously at pre-buried 2～3 gutters 5 within the walls; Caliber can be according to the dam body seepage discharge of estimation, and considers that certain safety factor confirms) with a mud pipe 6 (being seamless steel pipe); In this example mud pipe 6 downstream the gradient i that has a down dip of side be 1%; Be to increase the stability of barricade 3, can optionally thereunder arrange foundation grouting 17 (in the barricade work progress, reach 1m thick about the heavy and concrete of lid be in the milk when having 50% above intensity).
D, concrete guard wall 3 downstreams, basic 1 top fluid concrete Box-shaped Drainage Culvert 4, its terminal need extends to 9 outsides, waste field 10 and below thereof permeable enrockment district along water (flow) direction always, and working procedure can suitably intersect with step c; For soil property basis (promptly basis 1 is softer soil matrix), needs the rubble displacement layer 13 of the thick 0.4m of first making, and after building the C15 concrete cushion 14 of thick 0.15m, carry out the cast of Box-shaped Drainage Culvert 4 again; For rock foundation (i.e. basis 1 be harder batholith), directly build the C15 concrete cushion 14 of thick 0.15m after, can carry out the cast of Box-shaped Drainage Culvert 4.
E, prolong gutter 5 and mud pipe 6, and both are all stretched in the Box-shaped Drainage Culvert 4, wherein to stretch into the length in the Box-shaped Drainage Culvert 4 be 2m to gutter 5;
F, gutter 5 and mud pipe 6 exposed parts are built external wrapping concrete 7, in the time of protection gutter 5 and mud pipe 6, can barricade 3 and Box-shaped Drainage Culvert 4 overlap joints be got up;
G, in Box-shaped Drainage Culvert 4, select correct position construction volume mill weir 8;
H, carry out the anti-filter protection of Box-shaped Drainage Culvert 4 both sides excavations face,, lay one deck 400g/m earlier for soil-slope
2Geotextiles, the thick rubble overcoat 15 of making 0.4m gets final product then; For rock slope, then need not the anti-protection work of filtering, the back directly permeable enrockment of making gets final product; Box-shaped Drainage Culvert 4 front end reinforced gabions 12 are installed, and this reinforced gabion is layed in the entrance of external wrapping concrete 7 tops, Box-shaped Drainage Culvert 4, is used to prevent cause obstruction in the stone entering Box-shaped Drainage Culvert 4; Around barricade 3, reach Box-shaped Drainage Culvert 4 tops then and fill permeable enrockment or placed rockfill, form permeable enrockment district 9;
The waste material is filled on i, surface, forms waste district 10.
Claims (7)
1. establish the earth and rockfill dam dam body seepage monitoring structure of waste field behind the dam; The permeable enrockment district (9) that comprises waste field (10) and be positioned at its below; It is characterized in that: base of dam place, said dam body downstream, the interior fluid concrete barricade in permeable enrockment district (9) (3); The box culvert that catchments (2) that this barricade upstream side cast is arranged perpendicular to water (flow) direction; The elongated concrete longitudinal drainage box culvert (4) of burying underground in downstream, the permeable enrockment district (9) is buried gutter (5) and mud pipe (6) that the connected set water tank is contained (2) and Box-shaped Drainage Culvert (4) underground in the said barricade (3), the said box culvert that catchments (2) top board and upper reaches side plate are reserved several through holes; And bury header (16) underground, weir (8) is set in the Box-shaped Drainage Culvert (4).
2. establish the earth and rockfill dam dam body seepage monitoring structure of waste field behind the dam according to claim 1, it is characterized in that: said barricade (3) highly is 3m, and thickness is 1-2m.
3. establish the earth and rockfill dam dam body seepage monitoring structure of waste field behind the dam according to claim 1, it is characterized in that: the width of said Box-shaped Drainage Culvert (4) is 1.8-2.0m, highly is 2-2.2m, its downstream the gradient i that has a down dip of side be 1%-3%.
4. according to the earth and rockfill dam dam body seepage monitoring structure of establishing the waste field behind claim 1 or the 3 described dams, it is characterized in that: said Box-shaped Drainage Culvert (4) top and both sides are reserved with several water inlet through holes (4-1).
5. establish the earth and rockfill dam dam body seepage monitoring structure of waste field behind the dam according to claim 1, it is characterized in that: the thickness in said Box-shaped Drainage Culvert (4) permeable enrockment district, top (9) is 2-3m.
6. establish the earth and rockfill dam dam body seepage monitoring structure of waste field behind the dam according to claim 1, it is characterized in that: the length that said gutter (5) stretches in the Box-shaped Drainage Culvert (4) is 2m.
7. establish the earth and rockfill dam dam body seepage monitoring structure of waste field behind the dam according to claim 1 and 2, it is characterized in that: said barricade (3) arranged beneath foundation grouting (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202184374U CN202181539U (en) | 2011-06-23 | 2011-06-23 | Dam body seepage monitoring structure used for earth-rock dam with abandoned dreg site arranged behind |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202184374U CN202181539U (en) | 2011-06-23 | 2011-06-23 | Dam body seepage monitoring structure used for earth-rock dam with abandoned dreg site arranged behind |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202181539U true CN202181539U (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202184374U Expired - Lifetime CN202181539U (en) | 2011-06-23 | 2011-06-23 | Dam body seepage monitoring structure used for earth-rock dam with abandoned dreg site arranged behind |
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| CN (1) | CN202181539U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296572A (en) * | 2011-06-23 | 2011-12-28 | 中国水电顾问集团华东勘测设计研究院 | Earth and rockfill dam body seepage monitoring structure provided with abandoned dreg site behind dam and construction method thereof |
| CN106599407A (en) * | 2016-11-29 | 2017-04-26 | 长江勘测规划设计研究有限责任公司 | Spoil area hydraulic calculation implementing method applicable to water-soil conservation design |
| CN110158541A (en) * | 2019-06-03 | 2019-08-23 | 中国电建集团华东勘测设计研究院有限公司 | The double-deck geomembrane anti-seepage discharge structure, construction method and library basin antiseepage discharge structure |
-
2011
- 2011-06-23 CN CN2011202184374U patent/CN202181539U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296572A (en) * | 2011-06-23 | 2011-12-28 | 中国水电顾问集团华东勘测设计研究院 | Earth and rockfill dam body seepage monitoring structure provided with abandoned dreg site behind dam and construction method thereof |
| CN106599407A (en) * | 2016-11-29 | 2017-04-26 | 长江勘测规划设计研究有限责任公司 | Spoil area hydraulic calculation implementing method applicable to water-soil conservation design |
| CN106599407B (en) * | 2016-11-29 | 2019-06-07 | 长江勘测规划设计研究有限责任公司 | Dumping Sites water force implementation method suitable for Water & Soil Conservation Design |
| CN110158541A (en) * | 2019-06-03 | 2019-08-23 | 中国电建集团华东勘测设计研究院有限公司 | The double-deck geomembrane anti-seepage discharge structure, construction method and library basin antiseepage discharge structure |
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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 |
Granted publication date: 20120404 Effective date of abandoning: 20130612 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120404 Effective date of abandoning: 20130612 |
|
| RGAV | Abandon patent right to avoid regrant |