CN1587536A - Back ward water draining system of face plate rock-fill dam dam body and its construction method - Google Patents
Back ward water draining system of face plate rock-fill dam dam body and its construction method Download PDFInfo
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- CN1587536A CN1587536A CN 200410053115 CN200410053115A CN1587536A CN 1587536 A CN1587536 A CN 1587536A CN 200410053115 CN200410053115 CN 200410053115 CN 200410053115 A CN200410053115 A CN 200410053115A CN 1587536 A CN1587536 A CN 1587536A
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Abstract
The present invention relates to backward draining system of face plate rock-fill dam body and its construction process, and aims at preventing backward water head caused damage of mat base and concrete plate seam. During construction of the dam, backward draining system is set, which includes water collecting body comprising pebbles in certain volume set inside the dam and in certain distance to the toe board, and water draining pipe connected between the toe board and the water collecting body and comprising vertical section of pored steel pipe, inclined pipe in the toe board and horizontal pipe in between. After finishing the construction, the water draining pipe is blocked. The present invention is used in the concrete face plate dam and asphalt concrete face plate dam engineering under construction.
Description
Technical field
The present invention relates to a kind of rock dam body reverse drainage system and job practices thereof.Be applicable to that the construction period may form concrete face rockfill dam, the bituminous concrete panel dam engineering of reverse head difference in surface anti-seepage body upstream and downstream.
Background technology
When barrage adopted concrete slab or bituminous concrete panel as the dash leakage preventing structure, based on the characteristics of face dam dam material subregion, the ability that the semi-transparent water material in dam body upstream bears reverse infiltration (osmotic pressure) in the construction period was very limited.Bed course once took place domestic some face dam engineering and the solid sloping mask of concrete is impaired, even panel jacking displacement upstream, and the accident that causes all side seam water-stopping systems to destroy is handled very difficulty, has stayed potential safety hazard to engineering.At present, in high face dam work progress, dam body oppositely infiltration happens occasionally.Although be familiar with the harm of reverse infiltration is existing both at home and abroad, though there is engineering that measure of vertical pump drainage water or horizontal drainage sewer pipe are set on concrete slab, or pump drainage water and holes blocking inconvenience, workmanship influenced, or expense is higher.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of rock dam body reverse drainage system and job practices thereof are provided, this system is exactly by simple, practical, effectively engineering measure, with the investment of minimum and the management of most convenient, prevent that reverse head from causing that bedding material destroys and all side seams of concrete slab are destroyed.
The technical solution adopted in the present invention is: rock dam body reverse drainage system, have concrete slab, toe board, bedding material, sub-district material, transition layered material, stockpile, it is characterized in that in the dam body of distance toe board certain distance, being provided with the body that catchments, the body that catchments is made of the cobble of certain volume, the toe board place of upstream sump is provided with one group and leads to the catchment gutter of body of cobble, the vertical section of this gutter is porose steel pipe, partly is inclined tube by toe board, is connected by horizontal tube between the two.
Outside at described porose steel pipe is surrounded by stainless steel filtering net.
Described gutter is provided with 8.
The job practices of a kind of rock dam body reverse drainage system is characterized in that:
1) according to structure recited above the reverse drainage system is set in the construction period;
2) construction finishes the back gutter is carried out shutoff, in the shutoff process, discharge relation according to the level of tail water and reverse drainage hole, the active force that the water level rate of climb in measuring and calculating panel downstream and possibility counter plate produce, carry out the ballast design on panel top, promptly when the last two reverse drainage pipes of shutoff, arrange four concrete ballast piers on panel top;
3) the shutoff step to gutter is:
A) wrap up in the inwall that gauze cleans the inclined tube (8-3) of toe board (2) head reverse drainage pipe with the bamboo bar, fill in hemp (20) then to reverse drainage pipe depths, fill in plastic filler (17) (pre-buried plastics floral tube in the filler, plastic pipe causes the drainpipe outlet place) again with interim prevention reverse osmosis current;
B) backfill preshrunk quick-setting mortar (19) (mixing expansion agent, water glass);
C) go up grout pump and grout pipe and begin grouting, pour into the mixed serum of certain match ratio.After the hole all slurries occur on every side, check and tighten grout nipple continuation grouting, after all pulp is also stablized around the hole, stop to be in the milk.Floating mortar in cleaning hole outside and unnecessary mixture slice off grout nipple;
D) insert plastic filler (17) in the aperture;
E) scrub clean with the basal plane of steel brush certain limit around the aperture, with blowtorch basal plane is handled drying fully again after, brushing primer, and wipe off with plastic filler;
F) adopt neoprene rubber sheet (15) and steel plate (13) to seal the aperture, utilize and reserve joint bar (16) and expansion bolt fixation steel plate;
G) the toe board head concreting cover plate (14) around drain hole, the protection steel plate seals, and concrete joint surface carries out hacking to be handled.
The invention has the beneficial effects as follows: system adopts simple, practical, effectively dam body draining and shutoff design, has successfully solved the reverse seepage problem of dam body.This technology is through the application testing of actual engineering, be that Concrete Face Rockfill Dam is built on deep channel sand gravel covering layer, there is the reverse infiltration that surpasses 20m in dam body bedding material upstream and downstream in construction, and shutoff rear board in reverse drainage hole bears bigger reverse water pressure power immediately, and the final result reaction is good.According to investigations, do not see that both at home and abroad dam body acting in opposition head surpasses the case history of 20m.
Description of drawings
Fig. 1 is the cross-sectional view of dam body of the present invention.
Fig. 2 is the layout plan of dam body reverse drainage of the present invention position panel ballast pier.
Fig. 3 is the shutoff figure of dam body reverse drainage pipe of the present invention.
The specific embodiment
In the construction period rock dam body reverse drainage system is set, system has concrete slab 1, toe board 2, bedding material 3, sub-district material 4, transition layered material 5, stockpile 6, Dam Site collection rainfall and construction water amount under the estimation construction period design frequency, on the minimum toe board 2 in riverbed, reserve the drain hole that possesses the respective row outlet capacity, seep water in the dam body and can concentrate for making, freely exosmose from drain hole effectively, the body 7 that catchments is set in the dam body of distance toe board 2 certain distances, the body that catchments is made of the cobble of certain volume, arrange that from the toe board 2 of upstream sump 21 8 lead to the catchment gutter 8 of body (french drain) 7 of cobble, the vertical section of this gutter is porose steel pipe 8-1, the outside is surrounded by stainless steel filtering net, recognize preventing that steel pipe from stopping up, favourable draining is unimpeded; Part by toe board 2 is inclined tube 8-3, is horizontal tube 8-2 between inclined tube and the vertical tube, and it is through antiseptic coating steel pipe.
After the reverse drainage facility was set, the dam body infiltration can freely drain into toe board upstream sump 21, discharges foundation ditch with water pump.Behind the flood season upstream foundation ditch water-filling, the upstream current can enter dam body enrockment district by the draining steel pipe, have guaranteed dam face seepage body upstream and downstream hydraulic balance.
The reverse water percolating capacity that described gutter 8 is looked its dam body is provided with the gutter radical.
Dam construction must carry out shutoff to the reverse drainage system after finishing.Because of existing head difference between the level of tail water and toe board 2 bases, the active force of downstream infiltration plays concrete slab 1 lifts effect, when uplift force reaches one regularly, if panel top does not have enough support forces, then panel will be taken off by the top, and all side seam 18 water-stopping systems wreck.Therefore, when the support force on design panel top, according to the discharge relation of the level of tail water and reverse drainage pipe, the active force that the water level rate of climb in measuring and calculating panel downstream and possibility counter plate produce carries out the ballast design of panel top.By analytical calculation, when the last two reverse drainage pipes 8 of shutoff, need to arrange four concrete ballast piers 11 that its layout is seen accompanying drawing 2 on panel top.
Accompanying drawing 3 is seen in the shutoff of reverse drainage pipe, and its step is as follows:
A) wrap up in the inwall that gauze cleans the inclined tube 8-3 of toe board 2 head reverse drainage pipes with the bamboo bar, fill in hemp 20 then to reverse drainage pipe depths, fill in SR plastic filler 17 (pre-buried plastics floral tube in the filler, plastic pipe causes the drainpipe outlet place) again with interim prevention reverse osmosis current;
B) backfill preshrunk quick-setting mortar 19 (mixing expansion agent, water glass);
C) go up grout pump and grout pipe and begin grouting, pour into the mixed serum of certain match ratio.After the hole all slurries occur on every side, check and tighten grout nipple continuation grouting, after all pulp is also stablized around the hole, stop to be in the milk.Floating mortar in cleaning hole outside and unnecessary mixture slice off grout nipple;
D) insert SR plastic filler 17 in the aperture;
E) scrub clean with the basal plane of steel brush certain limit around the aperture, with blowtorch basal plane is handled drying fully again after, brushing primer, and wipe off with the SR filler;
F) adopt neoprene rubber sheet 15 and steel plate 13 to seal the aperture, utilize and reserve joint bar 16 and expansion bolt fixation steel plate;
G) the toe board head around drain hole is built C25 concrete cover 14, and the protection steel plate seals, and concrete joint surface carries out hacking to be handled.
Claims (4)
1. rock dam body reverse drainage system, has concrete slab (1), toe board (2), bedding material (3), sub-district material (4), transition layered material (5), stockpile (6), it is characterized in that: the body (7) that catchments is set in the dam body of distance toe board (2) certain distance, the body that catchments is made of the cobble of certain volume, the toe board (2) of upstream sump (21) is located to be provided with one group and is led to the catchment gutter (8) of body (7) of cobble, the vertical section of this gutter is porose steel pipe (8-1), by toe board (2) part is inclined tube (8-3), is connected by horizontal tube (8-2) between the two.
2. rock dam body reverse drainage according to claim 1 system, it is characterized in that: the outside at described porose steel pipe (8-1) is surrounded by stainless steel filtering net.
3. rock dam body reverse drainage according to claim 1 and 2 system, it is characterized in that: described gutter (8) is provided with 8.
4. the job practices of a rock dam body reverse drainage system is characterized in that:
1) according to the described structure of claim 1 the reverse drainage system is set in the construction period;
2) construction finishes the back gutter (8) is carried out shutoff, in the shutoff process, discharge relation according to the level of tail water and reverse drainage hole, the active force that the water level rate of climb in measuring and calculating panel downstream and possibility counter plate produce, carry out the ballast design on panel top, promptly when the last two reverse drainage pipes of shutoff (8), arrange four concrete ballast piers (11) on panel top;
3) the shutoff step to gutter is:
A) wrap up in the inwall that gauze cleans the inclined tube (8-3) of toe board (2) head reverse drainage pipe with the bamboo bar, fill in hemp (20) then to reverse drainage pipe depths, fill in plastic filler (17) (pre-buried plastics floral tube in the filler, plastic pipe causes the drainpipe outlet place) again with interim prevention reverse osmosis current;
B) backfill preshrunk quick-setting mortar (19) (mixing expansion agent, water glass);
C) go up grout pump and grout pipe and begin grouting, pour into the mixed serum of certain match ratio.After the hole all slurries occur on every side, check and tighten grout nipple continuation grouting, after all pulp is also stablized around the hole, stop to be in the milk.Floating mortar in cleaning hole outside and unnecessary mixture slice off grout nipple;
D) insert plastic filler (17) in the aperture;
E) scrub clean with the basal plane of steel brush certain limit around the aperture, with blowtorch basal plane is handled drying fully again after, brushing primer, and wipe off with plastic filler;
F) adopt neoprene rubber sheet (15) and steel plate (13) to seal the aperture, utilize and reserve joint bar (16) and expansion bolt fixation steel plate;
G) the toe board head concreting cover plate (14) around drain hole, the protection steel plate seals, and concrete joint surface carries out hacking to be handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100531153A CN1297713C (en) | 2004-07-15 | 2004-07-15 | Back ward water draining system of face plate rock-fill dam dam body and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100531153A CN1297713C (en) | 2004-07-15 | 2004-07-15 | Back ward water draining system of face plate rock-fill dam dam body and its construction method |
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| CN1587536A true CN1587536A (en) | 2005-03-02 |
| CN1297713C CN1297713C (en) | 2007-01-31 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446081B (en) * | 2008-12-03 | 2010-07-14 | 河海大学 | Concrete face for rockfill dam |
| CN102002928A (en) * | 2009-08-31 | 2011-04-06 | 中国水电顾问集团贵阳勘测设计研究院 | Hard rock and soft rock mixed panel dam piled stone |
| CN101691744B (en) * | 2009-09-30 | 2012-02-01 | 葛洲坝集团第五工程有限公司 | Overflow pre-settling construction method for concrete face rock-fill dam |
| CN102644259A (en) * | 2012-03-05 | 2012-08-22 | 西安理工大学 | Anchored concrete retaining wall rock-fill dam and building method thereof |
| CN103132488A (en) * | 2011-11-25 | 2013-06-05 | 中国水电顾问集团贵阳勘测设计研究院 | Reverse osmosis water processing method and reverse osmosis drainage system in construction period of concrete faced rockfill dam |
| CN104480901A (en) * | 2014-11-21 | 2015-04-01 | 淮海工学院 | Embankment dam leaking stoppage method |
| CN104480902A (en) * | 2014-11-21 | 2015-04-01 | 淮海工学院 | Concrete dam joint leaking stoppage method |
| 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 |
| CN106812117A (en) * | 2017-03-16 | 2017-06-09 | 中国水电建设集团十五工程局有限公司 | Dam reverse drainage plugging device and method |
| 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 |
| CN108035318A (en) * | 2017-12-28 | 2018-05-15 | 中国葛洲坝集团第二工程有限公司 | The construction method of the dam body water draining structure of homogeneous earth dam |
| CN109577287A (en) * | 2018-11-15 | 2019-04-05 | 重庆交通大学 | A kind of two sided sheetpile stone regulating barrage and its construction method with non-return valve |
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| SU470570A1 (en) * | 1972-03-18 | 1975-05-15 | Всесоюзный Ордена Трудового Красного Знамени Научно-Исследовательский Институт Гидротехники Им.Б.Е.Веденеева | Land on a dam on a water-saturated basis |
| SU1678963A1 (en) * | 1989-09-12 | 1991-09-23 | Сибирский филиал Всесоюзного научно-исследовательского института гидротехники им.Б.Е.Веденеева | Drain spoil bank |
| CN1022428C (en) * | 1992-04-30 | 1993-10-13 | 宁夏回族自治区水利学会 | Leakage-removing device for dam body |
| US5454668A (en) * | 1994-05-25 | 1995-10-03 | Baroid Technology, Inc. | Flood barrier and a method for forming a flood barrier |
| RU2087616C1 (en) * | 1995-05-30 | 1997-08-20 | Акционерное общество Красноярский проектно-изыскательский институт "Гидропроект" | Device for hydraulic storing of grainy wastes |
| FR2842580B1 (en) * | 2002-07-19 | 2005-02-04 | Jean Trionfini | METHOD FOR MANUALLY CLEANING DRAINS FROM A ROTATION AND TOOLS DESIGNED THEREFOR |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446081B (en) * | 2008-12-03 | 2010-07-14 | 河海大学 | Concrete face for rockfill dam |
| CN102002928A (en) * | 2009-08-31 | 2011-04-06 | 中国水电顾问集团贵阳勘测设计研究院 | Hard rock and soft rock mixed panel dam piled stone |
| CN101691744B (en) * | 2009-09-30 | 2012-02-01 | 葛洲坝集团第五工程有限公司 | Overflow pre-settling construction method for concrete face rock-fill dam |
| CN103132488B (en) * | 2011-11-25 | 2015-04-15 | 中国电建集团贵阳勘测设计研究院有限公司 | Reverse osmosis water processing method and reverse osmosis drainage system in construction period of concrete faced rockfill dam |
| CN103132488A (en) * | 2011-11-25 | 2013-06-05 | 中国水电顾问集团贵阳勘测设计研究院 | Reverse osmosis water processing method and reverse osmosis drainage system in construction period of concrete faced rockfill dam |
| CN102644259B (en) * | 2012-03-05 | 2014-11-26 | 西安理工大学 | Anchored concrete retaining wall rock-fill dam and building method thereof |
| CN102644259A (en) * | 2012-03-05 | 2012-08-22 | 西安理工大学 | Anchored concrete retaining wall rock-fill dam and building method thereof |
| CN104480901A (en) * | 2014-11-21 | 2015-04-01 | 淮海工学院 | Embankment dam leaking stoppage method |
| CN104480902A (en) * | 2014-11-21 | 2015-04-01 | 淮海工学院 | Concrete dam joint leaking stoppage method |
| CN104480901B (en) * | 2014-11-21 | 2016-06-29 | 淮海工学院 | A kind of blocking method of earth and rockfill dam |
| 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 |
| CN105970882B (en) * | 2016-04-19 | 2017-12-29 | 长江勘测规划设计研究有限责任公司 | Solve the structure and its building method of face dam construction time dam body reverse osmosis water problems |
| CN106812117A (en) * | 2017-03-16 | 2017-06-09 | 中国水电建设集团十五工程局有限公司 | Dam reverse drainage plugging device and method |
| 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 |
| CN108035318A (en) * | 2017-12-28 | 2018-05-15 | 中国葛洲坝集团第二工程有限公司 | The construction method of the dam body water draining structure of homogeneous earth dam |
| CN108035318B (en) * | 2017-12-28 | 2019-12-13 | 中国葛洲坝集团第二工程有限公司 | Construction method of dam body drainage structure of homogeneous earth dam |
| CN109577287A (en) * | 2018-11-15 | 2019-04-05 | 重庆交通大学 | A kind of two sided sheetpile stone regulating barrage and its construction method with non-return valve |
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