CN107447768A - CFRD reverse drainage system - Google Patents
CFRD reverse drainage system Download PDFInfo
- Publication number
- CN107447768A CN107447768A CN201710868559.XA CN201710868559A CN107447768A CN 107447768 A CN107447768 A CN 107447768A CN 201710868559 A CN201710868559 A CN 201710868559A CN 107447768 A CN107447768 A CN 107447768A
- Authority
- CN
- China
- Prior art keywords
- upstream
- dam body
- drainpipe
- cfrd
- row well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 119
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000001764 infiltration Methods 0.000 claims abstract description 31
- 230000008595 infiltration Effects 0.000 claims abstract description 31
- 239000000945 filler Substances 0.000 claims abstract description 20
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000011435 rock Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
Abstract
The invention belongs to Hydraulic and Hydro-Power Engineering field, specifically disclosing a kind of can make the timely and effective CFRD reverse drainage system collected that 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
The invention belongs to Hydraulic and Hydro-Power Engineering field, and in particular to a kind of CFRD reverse drainage 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.
The content of the invention
It can make the timely and effective concrete surface collected that seeped water in dam the technical problem to be solved in the present invention is to provide a kind of
Sheetpile masonry dam reverse drainage system.
The technical solution adopted for the present invention to solve the technical problems is：CFRD reverse drainage system,
The drainpipe at the toe board of upstream is arranged on including water side and is arranged on the upstream row well of dam body upstream internal；Also include setting
Collecting conduit in the upstream rockfill area of dam body, is filled with block filler in the collecting conduit, between the block filler
Formed with collection water space；The upstream row well connects with collecting conduit, and the water inlet end of the drainpipe stretches to upstream drainage
In well 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.
Present invention also offers a kind of method for blocking of CFRD reverse drainage system, this method is used to seal
The CFRD reverse drainage system stated is blocked, it comprises the following steps：
A, drainpipe is blocked in dry season, the bedding that dam body upstream is carried out after drainpipe closure fills；
B, treat that dam body upstream apron is filled to cope level less than at 3~5m of upstream row well cope level and the base of upstream
When effluent position is risen at 3~5m of cope level that elevation fills less than dam body upstream apron, the closure of upstream row well is carried out；
C, continue to fill dam body upstream progress bedding, treat that dam body upstream apron is filled to cope level and downstream row well
Cope level equal-height position and upstream Water Level in Foundation Pit are risen at 3~5m of cope level that elevation fills less than dam body upstream apron
When, carry out the closure of downstream row well.
It is further that after drainpipe closure, infiltration is by upstream row well or by upstream row well and downstream in dam body
Gully pump drainage；After the closure of upstream row well, infiltration is by downstream row well pump drainage in dam body.
The beneficial effects of the invention are as follows：By setting collecting conduit in the rockfill area of upstream, and filled in collecting conduit
Block filler, the collection water space formed between block filler then make it that infiltration timely and effective can collect in dam body, and then is beneficial to
Infiltration outwards excludes from drainpipe and upstream row well in dam body, avoids bedding material and is saturated destruction, and ensure that concrete
The anti-seepage effect of rock seepage control system.Collecting conduit seeps water along Yokogawa to laying beneficial to abundant collect in dam.It is set
Downstream row well can ensure after drainpipe and the closure of upstream row well, in dam body infiltration smoothly outwards exclude, it is effectively slow
The pressure of reverse drainage closure period is solved, is normally filled for dam and provides space and time.
Brief description of the drawings
Fig. 1 is the floor plan of CFRD reverse drainage system in the present invention；
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 invention will be further described 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 preferred embodiment of the present invention, in conjunction with shown in Fig. 1 and Fig. 4, the CFRD is reversely arranged
Water system also includes the downstream row well 240 for being arranged on the downstream inner of dam body 100, and upstream row is compared at the top of downstream row well 240
The top of well 220 is high.Set downstream row well 240 can ensure to block in drainpipe 210 and upstream row well 220
Afterwards, infiltration smoothly outwards excludes in dam body 100, effectively alleviates the pressure of reverse drainage closure period, normally fills and carries for dam
Space and time are supplied.
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.
The method for blocking of CFRD reverse drainage system, for blocking above-mentioned CFRD
Reverse drainage system, it 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 present invention dam body 100 is outwards excluded in the dam construction phase
Interior infiltration, and CFRD reverse drainage system is blocked using the method for blocking in the present invention, Neng Gou
Ensure that infiltration is obtained on the premise of effectively excluding in dam body 100, substantially reduce the construction of the upstream of dam body 100 and seeped water by dam body 100
Influence, ensure that the backfill of cell material, bedding material before dam is smoothed out, so as to reduce construction risk, effectively alleviate draining
Pipe 210, upstream row well 220 block the pressure of infiltration in period dam body 100 successively, and effectively save the duration.
Claims (10)
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.
9. the method for blocking of CFRD reverse drainage system, it is characterised in that for blocking such as claim 7 or
CFRD reverse drainage system described in 8, it comprises the following steps：
A, drainpipe (210) is blocked in dry season, the bedding of dam body (100) upstream is carried out after drainpipe (210) closure
Fill；
B, treat dam body (100) upstream apron fill to cope level less than at upstream row well (220) 3~5m of cope level and
When upstream Water Level in Foundation Pit is risen at 3~5m of cope level that elevation fills less than dam body (100) upstream apron, upstream row is carried out
The closure of well (220)；
C, continue to fill dam body (100) upstream progress bedding, treat that dam body (100) upstream apron is filled to cope level and downstream
Gully (240) cope level equal-height position and upstream Water Level in Foundation Pit rise to elevation and filled less than dam body (100) upstream apron
When at 3~5m of cope level, the closure of downstream row well (240) is carried out.
10. the method for blocking of CFRD reverse drainage system as claimed in claim 1, it is characterised in that：Row
After water pipe (210) closure, infiltration is by upstream row well (220) or by upstream row well (220) and downstream row in dam body (100)
Well (240) pump drainage；After upstream row well (220) closure, infiltration is by downstream row well (240) pump drainage in dam body (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868559.XA CN107447768A (en) | 2017-09-22 | 2017-09-22 | CFRD reverse drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710868559.XA CN107447768A (en) | 2017-09-22 | 2017-09-22 | CFRD reverse drainage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107447768A true CN107447768A (en) | 2017-12-08 |
Family
ID=60498061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710868559.XA Pending CN107447768A (en) | 2017-09-22 | 2017-09-22 | CFRD reverse drainage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107447768A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152414A (en) * | 2021-04-30 | 2021-07-23 | 中国葛洲坝集团第一工程有限公司 | Construction method for plugging water burst point of water delivery gallery bottom plate |
| CN113152414B (en) * | 2021-04-30 | 2024-04-26 | 中国葛洲坝集团第一工程有限公司 | Plugging construction method for water-flushing point of bottom plate of water delivery and drainage gallery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08269975A (en) * | 1995-03-31 | 1996-10-15 | Sato Kogyo Co Ltd | Landslide preventing method |
| CN1587536A (en) * | 2004-07-15 | 2005-03-02 | 国家电力公司华东勘测设计研究院 | Back ward water draining system of face plate rock-fill dam dam body and its construction method |
| CN101429759A (en) * | 2008-12-12 | 2009-05-13 | 中国葛洲坝集团股份有限公司 | Inverse drainage processing method in high concrete panel rock-fill dam construction period |
| CN105970882A (en) * | 2016-04-19 | 2016-09-28 | 长江勘测规划设计研究有限责任公司 | Structure solving reverse osmosis water problem of dam body in construction process of concrete-faced rockfill dam and construction method thereof |
| CN207211173U (en) * | 2017-09-22 | 2018-04-10 | 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 CN201710868559.XA patent/CN107447768A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08269975A (en) * | 1995-03-31 | 1996-10-15 | Sato Kogyo Co Ltd | Landslide preventing method |
| CN1587536A (en) * | 2004-07-15 | 2005-03-02 | 国家电力公司华东勘测设计研究院 | Back ward water draining system of face plate rock-fill dam dam body and its construction method |
| CN101429759A (en) * | 2008-12-12 | 2009-05-13 | 中国葛洲坝集团股份有限公司 | Inverse drainage processing method in high concrete panel rock-fill dam construction period |
| CN105970882A (en) * | 2016-04-19 | 2016-09-28 | 长江勘测规划设计研究有限责任公司 | Structure solving reverse osmosis water problem of dam body in construction process of concrete-faced rockfill dam and construction method thereof |
| CN207211173U (en) * | 2017-09-22 | 2018-04-10 | 中国电建集团成都勘测设计研究院有限公司 | CFRD reverse drainage system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113152414A (en) * | 2021-04-30 | 2021-07-23 | 中国葛洲坝集团第一工程有限公司 | Construction method for plugging water burst point of water delivery gallery bottom plate |
| CN113152414B (en) * | 2021-04-30 | 2024-04-26 | 中国葛洲坝集团第一工程有限公司 | Plugging construction method for water-flushing point of bottom plate of water delivery and drainage gallery |
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Application publication date: 20171208 |