CN104452827B - A kind of processing method at Concrete Dam spring - Google Patents
A kind of processing method at Concrete Dam spring Download PDFInfo
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- CN104452827B CN104452827B CN201410548989.XA CN201410548989A CN104452827B CN 104452827 B CN104452827 B CN 104452827B CN 201410548989 A CN201410548989 A CN 201410548989A CN 104452827 B CN104452827 B CN 104452827B
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- concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- 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
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/40—Foundations for dams across valleys or for dam constructions
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention relates to the processing method at a kind of Concrete Dam spring.It is an object of the invention to eliminate the potential safety hazard that stays of dam body spring, and the defect of the seepage control of dam aspect stayed because of spring problem, improve efficiency of construction, reduce risk.The technical scheme is that there is Concrete Dam or concrete structure base surface, the dam foundation or base surface are grown spring, many places, excavation, cleaning Concrete Dam or concrete structure base surface, level that the spring of Concrete Dam or concrete structure base surface downstream part is only buried underground is to steel pipe, bury consolidation grouting pulp-inlet pipe underground and aerofluxus is held concurrently grout outlet, the casting concrete dam dam foundation or concrete structure base surface, backfill self-compacting concrete in vertical steel pipe, consolidation grouting is implemented by the consolidation grouting pulp-inlet pipe buried underground in vertical steel pipe, spring is closed, continue casting concrete.The present invention is applicable to the design and construction of various concrete dams or concrete structure foundation treatment engineering.
Description
Technical field
The present invention relates to the processing method at a kind of Concrete Dam spring, it is adaptable to the design and construction of various concrete dams or concrete structure foundation treatment engineering.
Background technology
Concrete dam is generally built based on bedrock surface.For part concrete dam, dam foundation growth spring is relatively conventional phenomenon, some engineering foundation planes finds have tens places or even more spring, and conventional processing method is generally adopted pipe laying and gush water is guided to dam downstream.
Such way there is problems of, and the spring that Dam Base Surface particularly upstream is grown easily is linked up with storehouse water, subsoil water, if being not added with closing only carrying-off have bigger potential safety hazard, foundation plane leaves more weak area.For high dam, owing to bearing head height, water pressure greatly, the risk that the more spring of dam foundation growth fails thoroughly to process is bigger.
How the spring grown on Concrete Dam or concrete structure base surface comparatively can be processed thoroughly by certain measure, be an important technology in engineering foundation process design and construction.
Summary of the invention
The technical problem to be solved in the present invention is: provide the processing method at a kind of Concrete Dam spring for the problems referred to above, eliminate the potential safety hazard that dam body spring stays, and the defect of the seepage control of dam aspect stayed because of spring problem, improve efficiency of construction, reduce risk.
The technical scheme is that the spring processing method of a kind of Concrete Dam, have Concrete Dam or concrete structure base surface, the described dam foundation or base surface are grown spring, many places, and the process step at spring is by this method:
A, excavation, cleaning Concrete Dam or concrete structure base surface, reach the requirement of casting concrete, buries vertical steel pipe at spring place underground, and covers this spring；Arrange that the level connected with vertical steel pipe is to steel pipe, forms ejectment water total system, and by spring water ejectment to dam downstream；In level, control valve is set to steel pipe outlet section, and makes valve be in opening；
B, spring for Concrete Dam or concrete structure base surface downstream part only bury level underground to steel pipe, and level disconnects to steel pipe with the draining total system in step a, is directly communicated to outside dam；
Bury consolidation grouting pulp-inlet pipe underground in c, major part vertical steel pipe, bury consolidation grouting pulp-inlet pipe in remaining vertical steel pipe underground and aerofluxus is held concurrently grout outlet；
The ground floor concrete of d, the casting concrete dam dam foundation or concrete structure base surface and second layer concrete, and stay enough intermittent time according to construction requirement building between this two layer concrete；
E, having after more than 50% intensity until concrete, close the level control valve to steel pipe outlet section, backfill self-compacting concrete in vertical steel pipe, label is identical with structural concrete；
F, implement consolidation grouting by the consolidation grouting pulp-inlet pipe buried underground in vertical steel pipe, spring is closed；
G, continue to build third layer and above structural concrete.
The height of described ground floor concrete and second layer concrete two-layer sum reaches 3m.
Described consolidation grouting pulp-inlet pipe and aerofluxus are held concurrently, and the diameter of grout outlet is 28mm, pipe shaft arranges a flower hole every 50cm.
The invention has the beneficial effects as follows: 1, concreting two-layer, highly reach about 3m time, weight is enough covered owing to having, available vertical and level carries out self-compacting concrete to the spring that the dam foundation is grown by pipe laying and grouting is closed, completely eliminating the potential safety hazard that dam body spring stays, its treatment effect is better than the way of the pipe laying extraction dam body of routine；2, the spring grown for the concrete dam body upstream dam foundation, can give overall treatment by the method, and after process, seepage control of dam system can keep integrity, will not leave the defect of seepage control of dam aspect because of spring problem；3, the spring in Concrete Dam downstream, can leave small part conventionally processing method, and namely pipe laying draws dam body, and do so can effectively cut down the uplift pressure of the dam foundation, and dam structure stress is favourable；4, construct simple and convenient, in implementation process, in dam body, bury some vertical and levels underground to steel pipe, carry out self-compacting concrete backfill after casting concrete two-layer and consolidation grouting processes.
Accompanying drawing explanation
Fig. 1 is the elevational schematic view that Concrete Dam spring processes.
Detailed description of the invention
As shown in Figure 1, the present embodiment is the spring processing method of a kind of Concrete Dam, spring, many places 2 place grown on Concrete Dam or concrete structure base surface 1 buries vertical steel pipe 6 and level underground to steel pipe 7, level causes dam downstream to steel pipe 7, generally can adopt DN300 steel pipe (diameter of steel tube generally suitably can adjust according to water yield size), in pipe, set grouting system；Treating concreting two-layer, when height sum reaches about 3m, in vertical steel pipe 6, backfill is with label self-compacting concrete, then adopts pre-buried grout pipe that spring is carried out consolidation grouting closing；Dam body downstream can leave a small amount of spring 2, processing method conventionally, namely draws dam body with pipe laying.It is embodied as step as follows:
A, excavation, cleaning Concrete Dam or concrete structure base surface 1 so that it is reach the requirement of casting concrete, bury vertical steel pipe 6 underground at spring 2 place, and steel pipe covers spring 2；Layout level, to steel pipe 7, is connected with vertical steel pipe 6, forms ejectment water total system, and by spring water ejectment to dam downstream；In level, control valve 10 is set to steel pipe 7 outlet section so that it is be in opening；
B, spring 2 place a small amount of in dam foundation downstream only bury level underground to steel pipe 7, are not connected with above-mentioned draining total system, and are directly communicated to outside dam；
C, major part vertical steel pipe 6 in bury consolidation grouting pulp-inlet pipe 8 underground, in small part vertical steel pipe, 6 bury consolidation grouting pulp-inlet pipe 8 underground and aerofluxus is held concurrently grout outlet 9, this grouting pulp-inlet pipe, aerofluxus are held concurrently, and grout outlet diameter is 28mm, pipe shaft all arranges a flower hole every 50cm, and the hold concurrently lower end of grout outlet 9 of consolidation grouting pulp-inlet pipe 8 and aerofluxus respectively may be about 20mm and 10mm from the distance of Concrete Dam or concrete structure base surface 1；
The ground floor concrete 3 of d, casting concrete dam or concrete structure structure and second layer concrete 4, two layer height sums about reach 3m, and stay enough intermittent times building (aspect 5) between this two layer concrete according to construction requirement；
E, have after more than 50% intensity until concrete, the control valve 10 that the level of closedown is arranged to steel pipe 7 outlet section, in vertical steel pipe 6, backfills self-compacting concrete, label is identical with structural concrete；
F, implement consolidation grouting by the consolidation grouting pulp-inlet pipe 8 buried underground in steel pipe, spring 2 is closed；
G, continue to build third layer and above structural concrete.
Claims (3)
1. a spring processing method for Concrete Dam, has Concrete Dam (1), and the described dam foundation is grown spring, many places (2), and the process step at spring is by this method:
A, excavation, cleaning Concrete Dam (1), reach the requirement of casting concrete, buries vertical steel pipe (6) underground at spring (2) place, and covers this spring；Arrange that the level connected with vertical steel pipe (6) is to steel pipe (7), forms ejectment water total system, and by spring water ejectment to dam downstream；In level, control valve (10) is set to steel pipe (7) outlet section, and makes valve be in opening；
B, spring (2) for Concrete Dam (1) downstream part only bury level underground to steel pipe (7), and level disconnects to steel pipe with the ejectment water total system in step a, is directly communicated to outside dam；
Bury consolidation grouting pulp-inlet pipe (8) underground in c, major part vertical steel pipe (6), bury consolidation grouting pulp-inlet pipe (8) in remaining vertical steel pipe (6) underground and aerofluxus is held concurrently grout outlet (9)；
D, the ground floor concrete (3) on the casting concrete dam dam foundation (1) and second layer concrete (4), and stay enough intermittent time according to construction requirement building between this two layer concrete；
E, having after more than 50% intensity until concrete, close the level control valve (10) to steel pipe (7) outlet section, backfill self-compacting concrete in vertical steel pipe (6), label is identical with dam foundation concrete；
F, implement consolidation grouting by the consolidation grouting pulp-inlet pipe (8) buried underground in vertical steel pipe (6), spring (2) are closed；
G, continue to build third layer and above dam foundation concrete.
2. the spring processing method of a kind of Concrete Dam according to claim 1, it is characterised in that: described ground floor concrete (3) and the height of second layer concrete (4) two-layer sum reach 3m.
3. the spring processing method of a kind of Concrete Dam according to claim 1, it is characterised in that: described consolidation grouting pulp-inlet pipe (8) and aerofluxus are held concurrently, and the diameter of grout outlet (9) is 28mm, pipe shaft arranges a flower hole every 50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410548989.XA CN104452827B (en) | 2014-10-16 | 2014-10-16 | A kind of processing method at Concrete Dam spring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410548989.XA CN104452827B (en) | 2014-10-16 | 2014-10-16 | A kind of processing method at Concrete Dam spring |
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| CN104452827A CN104452827A (en) | 2015-03-25 |
| CN104452827B true CN104452827B (en) | 2016-06-29 |
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| CN201410548989.XA Active CN104452827B (en) | 2014-10-16 | 2014-10-16 | A kind of processing method at Concrete Dam spring |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114351655A (en) * | 2021-12-09 | 2022-04-15 | 长江勘测规划设计研究有限责任公司 | Construction method for raising structure of back slope limited combined gravity dam |
| CN114908808A (en) * | 2022-04-24 | 2022-08-16 | 武汉市市政建设集团有限公司 | Leakage stopping device and method for leakage of deep water cofferdam bottom sealing concrete |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245886A (en) * | 2008-03-13 | 2008-08-20 | 武汉京冶地基基础工程有限责任公司 | Processing method for deep building pit piping |
| CN102041810A (en) * | 2010-12-22 | 2011-05-04 | 中国水电顾问集团华东勘测设计研究院 | Construction method for pouring dam foundation concrete in zone with centralized water gushing |
| CN103061349A (en) * | 2013-01-28 | 2013-04-24 | 浙江华东建设工程有限公司 | Processing method for foundation pit piping |
| CN103967028A (en) * | 2014-05-27 | 2014-08-06 | 江苏南通三建集团有限公司 | Immersed tube drainage structure and method for handling suddenly-produced foundation pit water bursting and fountains through immersed tube drainage structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02197625A (en) * | 1989-01-25 | 1990-08-06 | Taisei Corp | Retaining continuous wall rear-side surface water pressure processing method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245886A (en) * | 2008-03-13 | 2008-08-20 | 武汉京冶地基基础工程有限责任公司 | Processing method for deep building pit piping |
| CN102041810A (en) * | 2010-12-22 | 2011-05-04 | 中国水电顾问集团华东勘测设计研究院 | Construction method for pouring dam foundation concrete in zone with centralized water gushing |
| CN103061349A (en) * | 2013-01-28 | 2013-04-24 | 浙江华东建设工程有限公司 | Processing method for foundation pit piping |
| CN103967028A (en) * | 2014-05-27 | 2014-08-06 | 江苏南通三建集团有限公司 | Immersed tube drainage structure and method for handling suddenly-produced foundation pit water bursting and fountains through immersed tube drainage structure |
Non-Patent Citations (2)
| Title |
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| 岩溶地区坝基涌泉的成因分析及处理;熊德森;《贵州水力发电》;20030630;第17卷(第2期);第21-24页 * |
| 蓟县电厂翻转机房深基础施工;孙国润;《城市》;20121125;第77-79页 * |
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| CN104452827A (en) | 2015-03-25 |
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