Reinforcement method of interbed rock mass area of dam foundation

A rock mass and regional technology, applied in the reinforcement field of dam foundation interbedded rock mass area, can solve problems such as high reinforcement cost of dam foundation interbedded rock mass area, complex chemical grout ratio process, excessive loss of chemical grout, etc. , to achieve the effect of ensuring the quality of grouting, reducing the difficulty of manufacturing, and improving the ability to resist deformation

Inactive Publication Date: 2019-03-22
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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Problems solved by technology

At present, the grout used in the consolidation grouting construction of the interbedded rock mass area of ​​the foundation of the dam is chemical grout. Excessive loss will cause a substantial increase in the cost of the dam foundation reinforcement treatment project, and the reinforcement cost of the interbedded rock mass area of ​​​​the dam foundation is high

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  • Reinforcement method of interbed rock mass area of dam foundation

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing.

[0016] The invention relates to a reinforcement method for a dam foundation interbedded rock mass area, the interbedded rock mass area includes a multi-layered weak rock mass layer 3, a multi-layered Grade III rock mass layer 1 and a multi-layered Grade II rock mass layer from top to bottom Body layer 2, such as figure 1 As shown, the interbedded rockmass area from top to bottom is grade III rockmass layer 1, weak rockmass layer 3, grade III rockmass layer 1, weak rockmass layer 3, grade II rockmass layer 2, weak rockmass layer 3. Grade II rock mass layer 2 and weak rock mass layer 3 are sandwiched between Grade III rock mass layer 1 or Grade II rock mass layer 2, including the following steps:

[0017] a. Detect and confirm the distribution of each rock mass layer and rock mass properties in the interbedded rock mass area;

[0018] b. Use grouting construction to reinfor...

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Abstract

The invention relates to the technical field of dam foundation reinforcement, in particular to a reinforcement method of the interbed rock mass area of a dam foundation. The interbed rock mass area comprises a multi-layer soft rock mass layer, a multi-layer three-level rock mass layer and a multi-layer second-level rock mass layer from top to bottom. The reinforcement method comprises the following steps: a, detecting and confirming the distribution of all rock mass layers and the rock mass character in the interbed rock mass area; and b, adopting grouting construction to reinforce all rock mass layers in the interbed rock mass area, wherein the slurry adopted for the multi-layer three-level rock mass layer is cement slurry, and the slurry adopted for the multi-layer second-level rock masslayer is chemical slurry. The manufacturing cost and the manufacturing difficulty of the cement slurry are far lower than those of the chemical slurry, so that the reinforcement cost of the interbedrock mass area of the dam foundation can be remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of dam foundation reinforcement, in particular to a reinforcement method for the interbedded rock mass region of the dam foundation. Background technique [0002] As a dam foundation rock mass, it needs to have sufficient strength, sufficient integrity and uniformity, sufficient anti-seepage and durability, especially for engineering high dam projects. However, the natural rocks of general dam foundations often encounter geological defects such as weakness, fracture, multiple cracks, well-developed joints, and high permeability, which reduce the integrity of the dam foundation rock mass, and may cause uneven subsidence, sliding, and seepage deformation, affecting the dam foundation. The safety and stability of the rock mass need to be dealt with accordingly, so as to improve the performance of the rock mass and make it meet the needs of the dam construction project. Consolidation grouting has a better effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/40E02D3/12E02D15/04
CPCE02D3/12E02D15/04E02D27/40
Inventor 祝海霞周钟潘晓红
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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