CN104452827A - Concrete dam base spring opening processing method - Google Patents
Concrete dam base spring opening processing method Download PDFInfo
- Publication number
- CN104452827A CN104452827A CN201410548989.XA CN201410548989A CN104452827A CN 104452827 A CN104452827 A CN 104452827A CN 201410548989 A CN201410548989 A CN 201410548989A CN 104452827 A CN104452827 A CN 104452827A
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- concrete
- dam
- spring
- steel pipe
- pipe
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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
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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
- E02D19/12—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 invention relates to a concrete dam base spring opening processing method which aims to eliminate potential safety hazards left by dam base spring openings, overcome the defect of dam seepage proofing left by the spring opening problem, improve construction efficiency and lower risks. According to the technical scheme, a concrete dam base or a concrete building basic face is arranged, multiple spring openings are formed in the dam base or the basic face, the concrete dam base or the concrete building basic face is dug or cleaned, the spring openings in the downstream portion of the concrete dam base or the concrete building basic face are only provided with horizontal steel pipes in an embedded mode, a solidification grouting slurry inlet pipe and an exhaust and slurry outlet pipe are arranged in an embedded mode, the concrete dam base or the concrete building basic face is poured, a vertical steel pipe is backfilled with self-compaction concrete, solidification grouting is conducted through the solidification grouting slurry inlet pipe embedded in the vertical steel pipe, the spring openings are sealed, and concrete is poured continuously. The processing method is suitable for design and construction of basic processing engineering of various concrete dams or concrete buildings.
Description
Technical field
The present invention relates to a kind of processing method of Concrete Dam spring, be applicable to the design and construction of various concrete dam or concrete structure foundation treatment engineering.
Background technology
Concrete dam is generally built based on bedrock surface.For part concrete dam, it is comparatively common phenomenon that the dam foundation grows spring, and some engineering foundation planes find that there is tens places and even more spring, conventional processing method generally adopts pipe laying that gush water is guided to dam downstream.
Such way Problems existing is, the Dam Base Surface spring that particularly upstream is grown easily is linked up with storehouse water, underground water, if do not add closed only carrying-off to have larger potential safety hazard, foundation plane leaves more weak area.For high dam, owing to bearing, head is high, water pressure is large, and the dam foundation grows more spring, and to fail the risk of thoroughly process larger.
How can be processed comparatively thoroughly the spring that Concrete Dam or concrete structure base surface are grown by certain measure, be an important technology in the construction of engineering foundation Treatment Design.
Summary of the invention
The technical problem to be solved in the present invention is: the processing method providing 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 to stay because of spring problem, improve efficiency of construction, reduce risk.
Technical scheme of the present invention is: a kind of spring processing method of Concrete Dam, has Concrete Dam or concrete structure base surface, and the described dam foundation or base surface grow spring, many places, and this method to the treatment step at spring is:
A, excavation, cleaning Concrete Dam or concrete structure base surface, reach the requirement of concreting, at spring, place buries vertical steel pipe underground, and covers this spring; Arrange that the level of connecting with vertical steel pipe is to steel pipe, form ejectment water total system, and by spring ejectment to dam downstream; In level, by-pass valve control is set to steel pipe outlet section, and makes valve be in opening;
B, level is only buried underground to steel pipe for the spring of Concrete Dam or concrete structure base surface downstream part, and level disconnects to the draining total system in steel pipe and step a, directly leads to outside dam;
Bury consolidation grouting inlet pipe underground in c, most of vertical steel pipe, in remaining vertical steel pipe, bury consolidation grouting inlet pipe and the double outlet pipe of exhaust underground;
The first floor concrete of d, the concreting dam dam foundation or concrete structure base surface and second layer concrete, and stay enough intermittent times according to construction requirement building between this two layer concrete;
E, have after more than 50% intensity until concrete, close the by-pass valve control of level 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 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 first floor concrete and the two-layer sum of second layer concrete reaches 3m.
The diameter of described consolidation grouting inlet pipe and the double outlet pipe of exhaust is 28mm, pipe shaft arranges a flower hole every 50cm.
The invention has the beneficial effects as follows: 1, two-layer in concreting, when highly reaching about 3m, enough cover heavily owing to having, vertical and level can be utilized to carry out self-compacting concrete to pipe laying to the spring that the dam foundation is grown and grouting is closed, completely eliminate the potential safety hazard that dam body spring stays, its treatment effect is better than the way that conventional pipe laying draws dam body; 2, for the spring that the concrete dam body upstream dam foundation is grown, give overall treatment by the method, after process, seepage control of dam system can keep integrality, can 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 conveniently processing method, and namely pipe laying draws dam body, does the uplift pressure effectively can cutting down the dam foundation like this, stressed favourable to dam structure; 4, construct simple and convenient, in implementation process, in dam body, bury some vertical and levels underground to steel pipe, after concreting is two-layer, carry out self-compacting concrete backfill and consolidation grouting process.
Accompanying drawing explanation
Fig. 1 is the elevational schematic view of Concrete Dam spring process.
Detailed description of the invention
As shown in Figure 1, the present embodiment is a kind of spring processing method of Concrete Dam, spring, many places 2 place that Concrete Dam or concrete structure base surface 1 are grown 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, establish grouting system; Treat that concreting is 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 to carry out consolidation grouting to spring and closes; Dam body downstream can leave a small amount of spring 2, and namely processing method conveniently draws dam body with pipe laying.Concrete implementation step is as follows:
A, excavation, cleaning Concrete Dam or concrete structure base surface 1, make it reach the requirement of concreting, at spring 2, place buries vertical steel pipe 6 underground, 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 ejectment to dam downstream; In level, by-pass valve control 10 is set to steel pipe 7 outlet section, makes it be in opening;
B, spring 2 place a small amount of in dam foundation downstream only bury level underground to steel pipe 7, be not connected, and directly lead to outside dam with above-mentioned draining total system;
C, in most of vertical steel pipe 6, bury consolidation grouting inlet pipe 8 underground, in small part vertical steel pipe, 6 bury consolidation grouting inlet pipe 8 and the double outlet pipe 9 of exhaust underground, this grouting inlet pipe, exhaust are held concurrently, and outlet pipe diameter is 28mm, pipe shaft all arranges a flower hole every 50cm, and consolidation grouting inlet pipe 8 and exhaust are held concurrently, the lower end of outlet pipe 9 is about 20mm and 10mm respectively from the distance of Concrete Dam or concrete structure base surface 1;
First floor concrete 3 and second layer concrete 4, the two layer height sum of d, concreting dam or concrete structure structure about reach 3m, and stay enough intermittent times according to construction requirement building (aspect 5) between this two layer concrete;
E, have after more than 50% intensity until concrete, the by-pass valve control 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 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 or concrete structure base surface (1), and the described dam foundation or base surface grow spring, many places (2), and this method to the treatment step at spring is:
A, excavation, cleaning Concrete Dam or concrete structure base surface (1), reach the requirement of concreting, buries vertical steel pipe (6) underground, and cover this spring at spring (2) place; Arrange that the level of connecting with vertical steel pipe (6) is to steel pipe (7), form ejectment water total system, and by spring ejectment to dam downstream; In level, by-pass valve control (10) is set to steel pipe (7) outlet section, and makes valve be in opening;
B, level is only buried underground to steel pipe (7) for the spring (2) of Concrete Dam or concrete structure base surface (1) downstream part, and level disconnects to the draining total system in steel pipe and step a, directly leads to outside dam;
Bury consolidation grouting inlet pipe (8) underground in c, most of vertical steel pipe (6), in remaining vertical steel pipe (6), bury consolidation grouting inlet pipe (8) and the double outlet pipe (9) of exhaust underground;
The first floor concrete (3) of d, the concreting dam dam foundation or concrete structure base surface (1) and second layer concrete (4), and stay enough intermittent times according to construction requirement building between this two layer concrete;
E, have after more than 50% intensity until concrete, close the by-pass valve control (10) of level to steel pipe (7) outlet section, backfill self-compacting concrete in vertical steel pipe (6), label is identical with structural concrete;
F, implement consolidation grouting by the consolidation grouting inlet pipe (8) buried underground in vertical steel pipe (6), spring (2) are closed;
G, continue to build third layer and above structural concrete.
2. the spring processing method of a kind of Concrete Dam according to claim 1, is characterized in that: described first 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, is characterized in that: the diameter of described consolidation grouting inlet pipe (8) and the double outlet pipe (9) of exhaust is 28mm, pipe shaft arranges a flower hole every 50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| CN201410548989.XA CN104452827B (en) | 2014-10-16 | 2014-10-16 | A kind of processing method at Concrete Dam spring |
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| CN104452827A true CN104452827A (en) | 2015-03-25 |
| CN104452827B CN104452827B (en) | 2016-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| JPH02197625A (en) * | 1989-01-25 | 1990-08-06 | Taisei Corp | Retaining continuous wall rear-side surface water pressure processing method |
| 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 |
-
2014
- 2014-10-16 CN CN201410548989.XA patent/CN104452827B/en active Active
Patent Citations (5)
| 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 |
| 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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| 孙国润: "蓟县电厂翻转机房深基础施工", 《城市》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Publication date |
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| CN104452827B (en) | 2016-06-29 |
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