CN207211173U - CFRD reverse drainage system - Google Patents
CFRD reverse drainage system Download PDFInfo
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- CN207211173U CN207211173U CN201721227513.1U CN201721227513U CN207211173U CN 207211173 U CN207211173 U CN 207211173U CN 201721227513 U CN201721227513 U CN 201721227513U CN 207211173 U CN207211173 U CN 207211173U
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Abstract
The utility model category Hydraulic and Hydro-Power Engineering field, specifically disclosing a kind of can make the timely and effective CFRD reverse drainage system collected of being seeped water in dam.The CFRD reverse drainage system, including water side are arranged on the drainpipe at the toe board of upstream and are arranged on the upstream row well of dam body upstream internal；Also include being arranged on collecting conduit in the upstream rockfill area of dam body, be filled with block filler in collecting conduit, formed with collecting water space between block filler；Upstream row well is connected with collecting conduit, and the water inlet end of drainpipe is stretched in upstream row well or in collecting conduit.By setting collecting conduit in the rockfill area of upstream, and block filler is filled in collecting conduit, the collection water space formed between block filler then make it that infiltration timely and effective can collect in dam body, and then is outwards excluded from drainpipe and upstream row well beneficial to infiltration in dam body.
Description
Technical field
A kind of the utility model category Hydraulic and Hydro-Power Engineering field, and in particular to CFRD reverse drainage system
System.
Background technology
After the CFRD dam foundation is cleared up and toe board excavates, if riverbed position monolith ground is that upstream is low, downstream
Height, or the level of tail water be higher than upstream toe board basic elevation when, then in rock work progress will because of the discrepancy in elevation shape
Into inverse osmosis current.After the completion of toe board and panel concrete construction, before dam upstream apron fills beginning, the construction time it is each
Kind current hydraulic pressure (riverbed infiltration, construction water and rainwater) must discharge, the larger head that otherwise inverse osmosis current are formed in time
Difference will likely cause bedding material seepage failure, so as to destroy bedding material grain composition, make the function of bedding material seepage flow out of hand；
In addition, reverse water pressure is also possible to lift or pressure break abutment wall and panel, water sealing structure is destroyed, so as to influence rock antiseepage system
The anti-seepage effect of system.For the rock on deep covering layer ground, water drainage of deep foundation pit problem is more prominent；Therefore, face
The design of sheetpile masonry dam construction time reverse drainage measure is extremely important.
At present, for the CFRD during construction panel level of tail water it is not high in the case of, generally use draining
Pipe carries out reverse drainage, i.e., the pre-buried drainpipe at the toe board of dam upstream, and the water inlet end of drainpipe gos deep into dam body rockfill area；
For the construction time level of tail water it is higher in the case of, the drainage system of generally use " drainpipe+gully " composition carries out reverse
Draining, i.e., gully, while pre-buried drainpipe at the toe board of dam upstream, the water inlet end depth of drainpipe are set inside the dam body of upstream
Enter in communication to gully inside.What existing reverse drainage system was unfavorable for seeping water in dam collects, and infiltration excludes effect one
As.
Utility model content
The technical problems to be solved in the utility model, which is to provide, a kind of can make the timely and effective coagulation collected of being seeped water in dam
Native Reverse Drainage System of Face Rockfill dam.
Technical scheme is used by the utility model solves its technical problem：CFRD reverse drainage system
System, including water side are arranged on the drainpipe at the toe board of upstream and are arranged on the upstream row well of dam body upstream internal；Also include
The collecting conduit being arranged in the upstream rockfill area of dam body, the collecting conduit is interior to be filled with block filler, the block filler
Between formed with collection water space；The upstream row well connects with collecting conduit, and the water inlet end of the drainpipe stretches to upstream
In gully or in collecting conduit.
It is further that the drainpipe is along suitable river to arrangement, the L-shaped knot of drainpipe pipeline section stretched into collecting conduit
Structure, the water inlet end of the drainpipe are located at the upper end of " L " shape structure.
It is further that the drainpipe is at least two be spaced apart.
It is further that the quantity of the upstream row well is at least flatly, elevation direction of the upstream row well along dam body
Set, and the top of upstream row well be located at dam body elevation 1/3rd heights of dam sentence under position.
It is further that the collecting conduit is along Yokogawa to the bottom for being laid in upstream rockfill area.
It is further that the block filler is sandy gravel.
It is further, in addition to is arranged on the downstream row well of dam body downstream inner, the top of the downstream row well
It is higher than the top of upstream row well.
It is further that the quantity of the downstream row well is at least flatly, and the bottom of downstream row well is in the dam foundation
On face.
The beneficial effects of the utility model are：By setting collecting conduit in the rockfill area of upstream, and in collecting conduit
Block filler is filled, the collection water space formed between block filler then make it that infiltration timely and effective can collect in dam body, and then
Outwards excluded from drainpipe and upstream row well beneficial to infiltration in dam body, avoid bedding material and be saturated destruction, and ensure that mixed
Coagulate the anti-seepage effect of native rock seepage control system.Collecting conduit seeps water along Yokogawa to laying beneficial to abundant collect in dam.Institute
The downstream row well of setting can ensure that after drainpipe and the closure of upstream row well infiltration is smoothly outside in dam body excludes, and has
Effect alleviates the pressure of reverse drainage closure period, is normally filled for dam and provides space and time.
Brief description of the drawings
Fig. 1 is floor plan of the present utility model；
Fig. 2 is the sectional view of the line A-A along Fig. 1；
Fig. 3 is the sectional view of the line B-B along Fig. 1；
Fig. 4 is the sectional view of the line C-C along Fig. 1；
In figure mark for：Dam body 100, upstream toe board 110, upstream rockfill area 120, drainpipe 210, upstream row well 220,
Collecting conduit 230, block filler 231, downstream row well 240.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
With reference to shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, CFRD reverse drainage system, including water side are set
Drainpipe 210 at upstream toe board 110, it is arranged on the upstream row well 220 of the upstream internal of dam body 100 and is arranged on dam
Collecting conduit 230 in the upstream rockfill area 120 of body 100；Block filler 231, block filler are filled with collecting conduit 230
Formed with collection water space between 231；Upstream row well 220 connects with collecting conduit 230, and the water inlet end of drainpipe 210 stretches to
In upstream row well 220 or in collecting conduit 230.By setting collecting conduit 230 in the upstream rockfill area 120, beneficial to making dam
Infiltration collects in body 100；Meanwhile the filling block filler 231 in the collecting conduit 230, and between block filler 231 formed with
Collect water space, can either so form support to the enrockment in upstream rockfill area 120, avoid the formation of dam body cavity, and cause dam
Infiltration timely and effective can be pooled to collection water space in body 100, and then be seeped water beneficial in dam body 100 from drainpipe 210 and upstream
Gully 220 outwards excludes, and drainage effect is preferable.
Wherein, drainpipe 210 is used to infiltration in dam body 100 being discharged in the foundation ditch of upstream, then using the pump drainage of dam
System will arrange outside the water body in the foundation ditch of upstream；Drainpipe 210 is generally pre-buried to be arranged on the upstream internal of dam body 100, its water side by
Upstream toe board 110 passes corresponding with upstream foundation ditch, and its water inlet end is stretched in upstream row well 220 or in collecting conduit 230
Collect infiltration.In order to, by being arranged outside drainpipe 210, generally make water inlet end be higher than water side when setting drainpipe 210 beneficial to infiltration；
It is preferred that drainpipe 210 is made using zinc-plated steel floral tube.
Preferably, drainpipe 210 along river to arrangement；Also, it is generally spaced and arranges that the drainpipe 210 of more than two is carried out
Draining.Can be that the water inlet end of whole drainpipes 210 is all stretched in upstream row well 220 or collected during more drainpipes 210
In water covered conduit 230；It can also be that the water inlet end of a portion drainpipe 210 is stretched in upstream row well 220, another part
The water inlet end of drainpipe 210 is stretched in collecting conduit 230., to the drainpipe 210 of arrangement, on the one hand can conveniently it be applied along river
Work, the length of drainpipe 210 on the other hand can be saved, it is cost-effective.
Seeped water in order to preferably collect in dam body 100, as shown in figure 3, stretching into the drainpipe in collecting conduit 230
The L-shaped structure of 210 pipeline sections, the water inlet end of drainpipe 210 are located at the upper end of " L " shape structure.
Dry constructed because the upstream apron of dam body 100 fills needs, therefore can only be after the closure of drainpipe 210
Bedding construction can be carried out；In order to ensure the construction period, while again in order to which infiltration in dam body 100 is effectively discharged, therefore
The upstream internal of dam body 100 is provided with upstream row well 220.Upstream row well 220 is mainly used in dam body after drainpipe 210 blocks
Infiltration excludes in 100, and it is generally set along the elevation direction of dam body 100, and the top of upstream row well 220 is located at dam body 100
/ 3rd heights of dam of elevation sentence under position.Positional distance at this is referred at 1/3rd heights of dam of the elevation of dam body 100
The height in dam foundation face is 1/3rd of the design altitude of dam body 100.The quantity of upstream row well 220 can be according to the rule of dam body 100
The amount of infiltration carries out relative set in mould and dam body 100, typically at least sets flatly；The dam body collected in upstream row well 220
Infiltration can pass through the outside pump drainage of draining pump in 100.
Collecting conduit 230 is used to make infiltration in dam body 100 to collect, effectively to exclude；In order to make in dam body 100
Infiltration fully collects to collecting conduit 230, and generally along Yokogawa to collecting conduit 230 is laid, Yokogawa is to referring to perpendicular to Shun He
To direction.The purpose of filling block filler 231 is in order to avoid forming dam internal cavity, to prevent to dam in collecting conduit 230
Body 100 adversely affects, and block filler 231 is preferably sandy gravel；And the collection water space formed between block filler 231 then can
Enough ensure the effect of catchmenting of collecting conduit 230.Collecting conduit 230 is arranged in upstream rockfill area 120, is because upstream rockfill area
Predominantly enrockment, fines are less in 120, therefore collection water space will not be plugged, and ensure that the effect catchmented.Preferably, will collect
Water covered conduit 230 is located at the bottom of upstream rockfill area 120, and upstream row well 220 is located to the surface of collecting conduit 230.
As a kind of preferred scheme of the present utility model, in conjunction with shown in Fig. 1 and Fig. 4, the CFRD is anti-
Also include the downstream row well 240 for being arranged on the downstream inner of dam body 100 to drainage system, the top of downstream row well 240 is than upper
The top for swimming gully 220 is high.Set downstream row well 240 can ensure in drainpipe 210 and the envelope of upstream row well 220
Infiltration is smooth after stifled, in dam body 100 outwards excludes, and effectively alleviates the pressure that reverse drainage blocks the period, is normally filled for dam
Provide space and time.
Downstream row well 240 is mainly used in seep water in dam body 100 after drainpipe 210 and upstream row well 220 block
Exclude, it can also aid in the outwards row's infiltration of upstream row well 220, reduce the discharge pressure of upstream row well 220.Downstream drainage
Well 240 is generally set along the elevation direction of dam body 100, and its bottom is on dam foundation face；The quantity of downstream row well 240 can
Relative set is carried out according to the amount to be seeped water in the scale of dam body 100 and dam body 100, typically at least provided with flatly；Downstream row well
Infiltration can pass through the outside pump drainage of draining pump in the dam body 100 collected in 240.Due to the bedding of the upstream of dam body 100 fill need by
The top covering of upstream row well 220, in order to cause the interior infiltration of dam body 100 is effectively outer to arrange under larger lid weight power,
Therefore the top of the downstream row well 240 set needs higher than the top of upstream row well 220.
Method for blocking above-mentioned CFRD reverse drainage system, comprises the following steps：
A, drainpipe 210 is blocked in dry season, drainpipe 210 carries out the upstream of dam body 100 bedding after blocking is filled out
Build；
B, treat the upstream apron of dam body 100 fill to cope level less than at the 3~5m of cope level of upstream row well 220 and
When upstream Water Level in Foundation Pit is risen at 3~5m of cope level that elevation fills less than the upstream apron of dam body 100, upstream drainage is carried out
The closure of well 220；
C, continue to fill the upstream of dam body 100 progress bedding, treat that the upstream apron of dam body 100 is filled to cope level and downstream
The cope level equal-height position of gully 240 and upstream Water Level in Foundation Pit rise to elevation and are less than the top that the upstream apron of dam body 100 fills
When at 3~5m of elevation, the closure of downstream row well 240 is carried out.
Wherein, after drainpipe 210 blocks, infiltration is by upstream row well 220 or by upstream row well 220 in dam body 100
With the pump drainage of downstream row well 240；After upstream row well 220 blocks, infiltration is by the pump drainage of downstream row well 240 in dam body 100.
Using the CFRD reverse drainage system in the utility model dam is outwards excluded in the dam construction phase
Seep water in body 100, and CFRD reverse drainage system is blocked using the above method, dam can ensured
Infiltration is obtained on the premise of effectively excluding in body 100, and substantially reduce the construction of the upstream of dam body 100 is influenceed by infiltration in dam body 100,
Ensure that the backfill of cell material, bedding material before dam is smoothed out, so as to reduce construction risk, effectively alleviate drainpipe 210, on
Trip gully 220 blocks the pressure of infiltration in period dam body 100 successively, and effectively saves the duration.
Claims (8)
1. CFRD reverse drainage system, including water side are arranged on the drainpipe at upstream toe board (110) place
(210) and it is arranged on the upstream row well (220) of dam body (100) upstream internal；It is characterized in that：Also include being arranged on dam body
(100) the collecting conduit (230) in upstream rockfill area (120), the collecting conduit (230) is interior to be filled with block filler
(231), formed with collection water space between the block filler (231)；The upstream row well (220) and collecting conduit (230)
Connection, the water inlet end of the drainpipe (210) are stretched in upstream row well (220) or in collecting conduit (230).
2. CFRD reverse drainage system as claimed in claim 1, it is characterised in that：The drainpipe
(210) along suitable river to arrangement, the L-shaped structure of drainpipe (210) pipeline section stretched into collecting conduit (230), the drainpipe
(210) water inlet end is located at the upper end of " L " shape structure.
3. CFRD reverse drainage system as claimed in claim 2, it is characterised in that：The drainpipe
(210) it is at least two be spaced apart.
4. CFRD reverse drainage system as claimed in claim 1, it is characterised in that：The upstream row well
(220) quantity is at least flatly, and elevation direction of the upstream row well (220) along dam body (100) is set, and upstream row well
(220) top be located at dam body (100) elevation 1/3rd heights of dam sentence under position.
5. CFRD reverse drainage system as claimed in claim 1, it is characterised in that：The collecting conduit
(230) along Yokogawa to the bottom for being laid in upstream rockfill area (120).
6. CFRD reverse drainage system as claimed in claim 5, it is characterised in that：The block filler
(231) it is sandy gravel.
7. the CFRD reverse drainage system as described in claim 1,2,3,4,5 or 6, it is characterised in that：Also
Downstream row well (240) including being arranged on dam body (100) downstream inner, compare upstream at the top of the downstream row well (240)
The top of gully (220) is high.
8. CFRD reverse drainage system as claimed in claim 7, it is characterised in that：The downstream row well
(240) quantity is at least flatly, and the bottom of downstream row well (240) is on dam foundation face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721227513.1U CN207211173U (en) | 2017-09-22 | 2017-09-22 | CFRD reverse drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721227513.1U CN207211173U (en) | 2017-09-22 | 2017-09-22 | CFRD reverse drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207211173U true CN207211173U (en) | 2018-04-10 |
Family
ID=61822563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721227513.1U Active CN207211173U (en) | 2017-09-22 | 2017-09-22 | CFRD reverse drainage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207211173U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447768A (en) * | 2017-09-22 | 2017-12-08 | 中国电建集团成都勘测设计研究院有限公司 | CFRD reverse drainage system |
-
2017
- 2017-09-22 CN CN201721227513.1U patent/CN207211173U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447768A (en) * | 2017-09-22 | 2017-12-08 | 中国电建集团成都勘测设计研究院有限公司 | CFRD reverse drainage system |
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