Method for preventing seepage of dam

A technology of dams and anti-seepage layers, applied in water conservancy projects, sea area projects, coastline protection, etc., can solve the problems of dam projects that cannot fully exert benefits and hidden dangers, and achieve the effect of improving anti-seepage performance and good comprehensive technology

Inactive Publication Date: 2010-09-08
宜昌天宇科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Due to various reasons, there are hidden dangers in these dams to varying degrees, resulting in some dam projects not being able to give full play to their benefits.

Method used

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  • Method for preventing seepage of dam
  • Method for preventing seepage of dam
  • Method for preventing seepage of dam

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Embodiment Construction

[0034] A kind of novel dam that the surface of dam concrete is covered with cement-based permeable crystalline anti-seepage layer designed by the present invention, detailed description is as follows in conjunction with accompanying drawing:

[0035] The purpose of the invention is to prevent surface cracks caused by leakage of the dam under the action of water pressure, internal and external temperature difference and environmental humidity difference. Based on such a principle. When we apply the anti-seepage material on a completely wet concrete surface, the active ingredients in the anti-seepage material react with various concrete minerals, and as a result, all cracks, holes and voids with a width of more than 500um are completely filled . This reaction continues and will eventually penetrate deep into the concrete, possibly penetrating the entire concrete structure.

[0036] Embodiment of the present invention is shown in figure (two), in order to prevent the generation...

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Abstract

Dam concrete for hydraulic and hydro-power engineering is a porous material. When a dam stores water, the concrete of the dam body has the seepage phenomenon easily under the action of pressure of heading-up water level. A method for preventing the seepage of the dam comprises that: the whole upstream concrete surface of the dam is treated by a plurality of working procedures, so that the surface defects of the dam are fully exposed; and a layer of cementitious capillary crystalline waterproofing material (shown as the attached drawing 2 in the abstract) covers on the concrete surface by a brushing or spraying process, and active molecules in the material transmit, fill and generate hydration, so that the material is fully combined with the concrete into a whole, and the anti-seepage effect of the material is obviously improved. Engineering application proves that the process has obviously improved anti-seepage effect of the dam in hydraulic engineering by using the cementitious capillary crystalline waterproofing material, and the cementitious material is fully and effectively combined and absorbed by the surface of the dam, so the anti-seepage, pressure resistance and other performance of the concrete are obviously improved.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, in particular to dam seepage prevention technology. (including concrete face rockfill dam, arch dam, gravity dam) Background technique [0002] my country is the country with the most reservoirs in the world, with more than 85,000 large, medium and small reservoirs. These water conservancy projects have played an important role in the development of the national economy. Due to various reasons, there are hidden dangers in these dams in different degrees, so that some dam projects cannot give full play to their benefits. Accidents of dam breaks and dike bursts occur from time to time, seriously threatening the lives of the people. Therefore, it is urgent to study a simple, economical and effective anti-seepage reinforcement technology to effectively prevent and deal with dam leakage. [0003] Concrete has a certain self-healing ability under damaged conditions, and the ear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/02
Inventor 杜彬张敏乐阳杜钢许超
Owner 宜昌天宇科技有限公司
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