CN113216091A - Multi-combined full-section seepage-proofing reinforcing construction method for main dam of reservoir - Google Patents
Multi-combined full-section seepage-proofing reinforcing construction method for main dam of reservoir Download PDFInfo
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- CN113216091A CN113216091A CN202110462402.3A CN202110462402A CN113216091A CN 113216091 A CN113216091 A CN 113216091A CN 202110462402 A CN202110462402 A CN 202110462402A CN 113216091 A CN113216091 A CN 113216091A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
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- E02B3/16—Sealings or joints
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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Abstract
The application relates to a multi-combined full-section seepage-proofing reinforcing construction method for a main dam of a reservoir, which comprises the following steps of S1 construction preparation; s2 seepage prevention reinforcement, the process principle is that homogeneous earth dam sandy clay filler is used for grouting construction easily, and seepage prevention reinforcement treatment is carried out on different parts sequentially by different seepage prevention means by adopting a construction sequence from top to bottom; s3 effect check. According to different risk conditions of the main dam of the reservoir, grouting construction technology is adopted for dam body seepage prevention, sequential construction is carried out, seepage prevention reinforcement treatment is carried out on different parts sequentially through different seepage prevention means, the purpose of seepage prevention reinforcement of the main dam of the reservoir is achieved, the effect of danger removal reinforcement after the seepage prevention construction technology of the main dam of the reservoir is improved, the comprehensive benefit is excellent, compared with the traditional single seepage prevention construction technology, sequential construction from top to bottom is carried out, required personnel and equipment investment is low, and the overall economy is good.
Description
Technical Field
The application relates to the field of main dam seepage prevention, in particular to a multi-combined full-section seepage prevention and reinforcement construction method for a main dam of a reservoir.
Background
The main reservoir dam is a water retaining structure used for intercepting river water flow to raise water level or regulate flow, is built on a river channel, and can form a reservoir by intercepting the water flow. In rainy season, the gate arranged on the dam can drain water properly, so that flood control and power generation can be achieved, and in dry season, the reservoir can be used for plant irrigation and water supply for residents after centralized water storage; therefore, the main dam of the reservoir built on the river can play a role in regulating water resources.
The existing Chinese patent with publication number CN110374060A discloses a reservoir seepage-proofing structure of a rock-fill dam face and a soil and stone backfill reservoir bottom and a construction method, wherein an upstream slope of the rock-fill dam is prevented from seepage by adopting an asphalt concrete seepage-proofing panel, and the asphalt concrete seepage-proofing panel adopts a simple section; the reservoir bottom is impervious by adopting a composite geomembrane, and the composite geomembrane is pressed by adopting a sand bag; the connection between the asphalt concrete seepage-proofing panel and the reservoir bottom geomembrane adopts a seepage-proofing post-pouring belt; arranging a copper sheet for water stop between the rock-fill dam asphalt concrete seepage-proofing panel and the post-cast strip; and the reservoir bottom anti-seepage composite geomembrane and the post-cast strip are lapped and bonded by coating polyurea. The method meets the requirement of sealing an anti-seepage system, can also adapt to the characteristic of large deformation of dam bodies and reservoir bottom filling materials and the requirement of stable permeation of each contact surface of a connecting part in the operation period, and solves the key technical problem of anti-seepage system design in the scheme of constructing the combined reservoir of the asphalt concrete anti-seepage panel of the rock-fill dam and the earth stone backfilled reservoir bottom composite geomembrane.
Aiming at the related technologies, the inventor considers that the main dam seepage-proofing reinforcement construction of the reservoir at the present stage mainly adopts the forms of curtain water-stop, concrete seepage-proofing walls and the like, but aiming at the phenomena of multiple wet slopes and small strand water leakage existing in the main dam of the homogeneous earth dam of the engineering reservoir, the method combines the analysis of various reasons such as actual construction site, construction period requirements, flood season requirements and the like, and the purpose of danger removal and reinforcement is difficult to achieve by adopting a single seepage-proofing construction technology in a general way.
Disclosure of Invention
In order to improve the danger eliminating and reinforcing effect after the seepage-proofing construction technology of the main dam of the reservoir, the application provides a multi-combined type full-section seepage-proofing reinforcing construction method of the main dam of the reservoir.
The application provides a multiple combination formula full section prevention of seepage reinforcement construction method of reservoir main dam, adopts following technical scheme:
s1 construction preparation;
s2 seepage prevention reinforcement, the process principle is that homogeneous earth dam sandy clay filler is used for grouting construction easily, and seepage prevention reinforcement treatment is carried out on different parts sequentially by different seepage prevention means by adopting a construction sequence from top to bottom;
s3 effect check.
By adopting the technical scheme, according to different risk conditions of the main dam of the reservoir, the dam body seepage prevention is constructed by adopting a grouting construction technology in sequence, seepage prevention reinforcement treatment is sequentially carried out on different parts by different seepage prevention means, the aim of seepage prevention reinforcement of the main dam of the reservoir is achieved, the effect of removing danger and reinforcing after the seepage prevention construction technology of the main dam of the reservoir is improved, the comprehensive benefit is excellent, compared with the traditional single seepage prevention construction technology, the construction is carried out in sequence from top to bottom, the required personnel and equipment investment is less, and the integral economy is good.
Optionally, step S2 includes dam body seepage-proofing reinforcing, dam foundation contact zone seepage-proofing reinforcing, and dam foundation seepage-proofing reinforcing.
By adopting the technical scheme, compared with the traditional single seepage-proofing construction technology, the method adopts targeted seepage-proofing treatment according to the dam body risk part, forms a full-section seepage-proofing structure under the main dam multiple combined seepage-proofing technology, and has excellent seepage-proofing effect.
Optionally, in step S2, the seepage-proofing reinforcement of the dam body is performed by using a split grouting method.
By adopting the technical scheme, compared with the traditional single seepage-proofing construction technology, the targeted seepage-proofing treatment is adopted according to the dam body risk part, and the splitting grouting method is adopted to further improve the excellence of the seepage-proofing effect.
Optionally, in the step S2, the seepage-proofing reinforcing of the dam foundation contact zone is performed by high-pressure jet grouting.
By adopting the technical scheme, compared with the traditional single seepage-proofing construction technology, the targeted seepage-proofing treatment is adopted according to the dam body disease risk part, and the excellence of the seepage-proofing effect is further improved by adopting high-pressure jet grouting.
Optionally, in the step S2, the dam foundation seepage-proofing reinforcement is performed by curtain grouting.
By adopting the technical scheme, compared with the traditional single seepage-proofing construction technology, the targeted seepage-proofing treatment is adopted according to the dam body disease risk part, and the excellence of the seepage-proofing effect is further improved by adopting high-pressure jet grouting.
Optionally, after seepage-proofing reinforcement, the split grouting mud wall, the high-pressure jet grouting pile and the curtain are basically positioned on the same plane.
By adopting the technical scheme, the full-section seepage-proofing reinforcing structure of the main dam of the reservoir is formed by ensuring that the split grouting mud wall, the high-pressure jet grouting pile and the curtain are basically positioned on the same plane, and the stability of the seepage-proofing reinforcing structure is further improved.
Optionally, the effect check in step S3 is performed by detecting a full-section seepage-proofing structure of the dam body.
By adopting the technical scheme, the stability of the full-section seepage-proofing reinforcing structure of the main dam of the reservoir is further ensured by detecting the full-section seepage-proofing structure of the dam body.
Optionally, the method is suitable for full-section seepage-proofing and reinforcing construction of various homogeneous earth dams and earth and rockfill dams, and is particularly suitable for dam bodies with the width of the dam crest being less than 5 m.
By adopting the technical scheme, the application range is wide, the main dam seepage-proofing reinforcing effect is obvious, and the comprehensive benefit is excellent.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to different risk conditions of the main dam of the reservoir, grouting construction technology is adopted for dam body seepage prevention, sequential construction is carried out, seepage prevention reinforcement treatment is carried out on different parts sequentially through different seepage prevention means, the purpose of seepage prevention reinforcement of the main dam of the reservoir is achieved, the effect of danger removal reinforcement after the seepage prevention construction technology of the main dam of the reservoir is improved, the comprehensive benefit is excellent, compared with the traditional single seepage prevention construction technology, sequential construction is carried out from top to bottom, required personnel and equipment investment is less, and the overall economy is good;
2. compared with the traditional single seepage-proofing construction technology, the method has the advantages that the targeted seepage-proofing treatment is adopted according to the dam body risk part, a full-section seepage-proofing structure is formed under the main dam multiple combined seepage-proofing technology, and the seepage-proofing effect is excellent;
3. the stability of the full-section seepage-proofing reinforcing structure of the main dam of the reservoir is further ensured through the detection of the full-section seepage-proofing structure of the dam body.
Drawings
FIG. 1 is a process flow diagram of a construction method for multiple combined full-section seepage prevention and reinforcement of a main dam of a reservoir.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
The embodiment of the application discloses a multi-combined full-section seepage-proofing reinforcing construction method for a main dam of a reservoir.
The main dam seepage-proofing reinforcing construction of the reservoir at the present stage mainly adopts the forms of curtain water-stopping, concrete seepage-proofing walls and the like, but aiming at the phenomena of multiple wet slopes and small strand water leakage existing in the main dam of the homogeneous earth dam of the reservoir of the project, the seepage-proofing reinforcing construction method combines the analysis of various reasons such as actual construction sites, construction period requirements, flood season requirements and the like on site, and for example, the purpose of danger removal and reinforcement is difficult to achieve by adopting a single seepage-proofing construction technology in a general way.
According to different parts, risk degree, risk reasons and the like of the main dam of the engineering, a processing scheme combining different seepage-proofing technologies is pertinently provided, and after field practice, a multi-combined full-section seepage-proofing reinforcing construction method for the main dam of the reservoir is finished and assembled.
According to different disease conditions of the main dam of the reservoir, the splitting grouting technology is adopted for dam seepage prevention, the curtain grouting technology is adopted for a dam foundation, a high-pressure jet grouting construction pile body is used as a lap joint of the splitting grouting mud wall and the dam foundation curtain grouting for a dam body and dam foundation contact zone, construction is carried out in sequence, the purpose of seepage prevention and reinforcement of the main dam of the project is achieved, and the comprehensive benefit is excellent.
Referring to fig. 1, a multiple combined type full-section seepage-proofing reinforcing construction method for a main dam of a reservoir comprises the following process flows and operation key points:
s1 construction preparation;
s2, performing dam body seepage-proofing reinforcement through a split grouting method, performing dam foundation contact zone seepage-proofing reinforcement through high-pressure jet grouting, and performing dam foundation seepage-proofing reinforcement through curtain grouting;
and S3, performing effect inspection through the full-section seepage-proofing structure of the dam body.
The process principle is that the homogeneous earth dam sandy clay filler is used for grouting construction easily, the construction sequence from top to bottom is adopted, and the main dam body adopts the split grouting technology to fill cracks of the dam body and solidify the dam body; the dam foundation is reinforced by adopting a curtain grouting technology to block underground water seepage; the dam foundation and the dam body are connected and reinforced by adopting the high-pressure jet grouting pile, and the curtain grouting cover plate grouting function can be realized.
Meanwhile, the split grouting mud wall, the high-pressure jet grouting pile and the curtain are basically on the same plane, and the full-section seepage-proofing reinforcing structure of the main dam of the reservoir is formed.
Compared with the traditional single seepage-proofing construction technology, the method adopts targeted seepage-proofing treatment according to the dam body risk part, forms a full-section seepage-proofing structure under the main dam multiple combined seepage-proofing technology, and has excellent seepage-proofing effect.
Compared with the traditional single anti-seepage construction technology, the construction is performed in sequence from top to bottom, the required personnel and equipment investment is low, and the whole economy is good.
Meanwhile, the method is suitable for all-section seepage-proofing reinforcing construction of various homogeneous earth dams and earth and rockfill dams, and is particularly suitable for dam bodies with the width of the dam crest being less than 5 m.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A multi-combined full-section seepage-proofing reinforcing construction method for a main dam of a reservoir adopts the following technical scheme:
s1 construction preparation;
s2 seepage prevention reinforcement, the process principle is that homogeneous earth dam sandy clay filler is used for grouting construction easily, and seepage prevention reinforcement treatment is carried out on different parts sequentially by different seepage prevention means by adopting a construction sequence from top to bottom;
s3 effect check.
2. The multi-combined full-section seepage-proofing and reinforcing construction method of the main dam of the reservoir as claimed in claim 1, adopts the following technical scheme:
and the step S2 comprises dam body seepage-proofing reinforcement, dam foundation contact zone seepage-proofing reinforcement and dam foundation seepage-proofing reinforcement.
3. The multi-combined full-section seepage-proofing and reinforcing construction method of the main dam of the reservoir as claimed in claim 2, adopts the following technical scheme:
and in the step S2, seepage-proofing reinforcing of the dam body is carried out by adopting a split grouting method.
4. The multi-combined full-section seepage-proofing and reinforcing construction method of the main dam of the reservoir as claimed in claim 3, adopts the following technical scheme:
and step S2, seepage-proofing reinforcing the dam foundation contact zone by high-pressure jet grouting.
5. The multi-combination full-section seepage-proofing and reinforcing construction method of the main dam of the reservoir as claimed in claim 4, adopts the following technical scheme:
and in the step S2, performing seepage-proofing reinforcement treatment on the dam foundation by adopting curtain grouting.
6. The multiple combined full-section seepage-proofing reinforcing construction method of the main dam of the reservoir as claimed in claim 5, adopts the following technical scheme:
after seepage-proofing reinforcement, the split grouting mud wall, the high-pressure jet grouting pile and the curtain are basically positioned on the same plane.
7. The multi-combined full-section seepage-proofing and reinforcing construction method of the main dam of the reservoir as claimed in claim 1, adopts the following technical scheme:
and the effect check in the step S3 is carried out through the full-section seepage-proofing structure of the dam body.
8. The multi-combined full-section seepage-proofing and reinforcing construction method of the main dam of the reservoir as claimed in claim 1, adopts the following technical scheme:
the method is suitable for the full-section seepage-proofing reinforcing construction of various homogeneous earth dams and earth-rock dams, and is particularly suitable for dam bodies with the width of the dam crest being less than 5 m.
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| CN202110462402.3A CN113216091A (en) | 2021-04-27 | 2021-04-27 | Multi-combined full-section seepage-proofing reinforcing construction method for main dam of reservoir |
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| CN202110462402.3A CN113216091A (en) | 2021-04-27 | 2021-04-27 | Multi-combined full-section seepage-proofing reinforcing construction method for main dam of reservoir |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002047630A (en) * | 2000-08-02 | 2002-02-15 | Eikou Sangyo Kk | Water leakage preventive construction method of dam |
| CN101736719A (en) * | 2010-01-22 | 2010-06-16 | 中国水电顾问集团华东勘测设计研究院 | Construction method for dam body seepage preventing curtain grouting |
| CN204370373U (en) * | 2014-11-13 | 2015-06-03 | 昆明理工大学 | Seepage proof curtain structure closed by a kind of reservoir |
| JP2016519730A (en) * | 2013-04-09 | 2016-07-07 | カルピ、テック、ベスローテン、フェンノートシャップＣａｒｐｉ Ｔｅｃｈ Ｂ．Ｖ． | Method and device for waterproofing over seams of structures subject to water pressure |
| CN109281330A (en) * | 2018-10-11 | 2019-01-29 | 青海大学 | A kind of osmotic control method |
-
2021
- 2021-04-27 CN CN202110462402.3A patent/CN113216091A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002047630A (en) * | 2000-08-02 | 2002-02-15 | Eikou Sangyo Kk | Water leakage preventive construction method of dam |
| CN101736719A (en) * | 2010-01-22 | 2010-06-16 | 中国水电顾问集团华东勘测设计研究院 | Construction method for dam body seepage preventing curtain grouting |
| JP2016519730A (en) * | 2013-04-09 | 2016-07-07 | カルピ、テック、ベスローテン、フェンノートシャップＣａｒｐｉ Ｔｅｃｈ Ｂ．Ｖ． | Method and device for waterproofing over seams of structures subject to water pressure |
| CN204370373U (en) * | 2014-11-13 | 2015-06-03 | 昆明理工大学 | Seepage proof curtain structure closed by a kind of reservoir |
| CN109281330A (en) * | 2018-10-11 | 2019-01-29 | 青海大学 | A kind of osmotic control method |
Non-Patent Citations (2)
| Title |
|---|
| 王新斌等: "组合灌浆技术在水库大坝防渗中的应用", 《中国农村水利水电》 * |
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Application publication date: 20210806 |