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A Method for Determining the Stability of Dangerous Rock Mass in Environmental Slopes of Hydropower Projects

A technology for hazardous rock mass and environment, which is applied in basic structure engineering, excavation, climate change adaptation, etc. The actual problems of hydropower projects, etc., to avoid project investment, save construction period, and ensure the effect of safety

Active Publication Date: 2015-08-26
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there is no unified standard for the evaluation of the stability of dangerous rock mass in environmental slopes, and it is not perfect.

Method used

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  • A Method for Determining the Stability of Dangerous Rock Mass in Environmental Slopes of Hydropower Projects
  • A Method for Determining the Stability of Dangerous Rock Mass in Environmental Slopes of Hydropower Projects
  • A Method for Determining the Stability of Dangerous Rock Mass in Environmental Slopes of Hydropower Projects

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Embodiment 1

[0017] The 25# dangerous rock mass of Dadu River Shuangjiangkou Hydropower Station is located directly above the axis of the left dam abutment dam, on the steep cliff, with a distribution elevation of 2635-2731m and a cubic volume of 18900m 3 , is weakly weathered and strongly unloaded granite with a subfast structure. Under the action of weathering and unloading, the cracks open 5-10cm and are filled with debris and mud. Main cracks: ①N45°—55°W / SW∠50°—55°, along the slope; ②N70°—75°E / SE∠75°—80°, on the air surface; ③N25°—35°W / NE ∠50°—60°, reverse slope. Among them, the cracks along the slope form the bottom sliding surface, the air surface is parallel to the valley to form a nearly upright cliff, the cracks on the reverse slope form a lateral cut, the three groups of cracks cut each other, local weathering forms a cavity, and the stability is poor. It is prone to collapse under the influence of other factors. The main threat to the dam.

[0018] The 27# dangerous rock mass...

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Abstract

The invention discloses a method for determining side slope dangerous rock body stability in a water-power engineering environment, and relates to water-power engineering. The method for determining side slope dangerous rock body stability in the water-power engineering environment meets water-power engineering practice and is beneficial for reducing unnecessary side slope dangerous rock body treatment. The method determining the side slope dangerous rock body stability in the water-power engineering environment includes the steps that according to the level of a hydraulic structure affected by an environment side slope dangerous rock body, the area of the affected hydraulic structure and whether the area of the affected hydraulic structure is a crowded engineering activity area or not, the estimation level of dangerous rock body stability is determined, stability of key portions of the hydraulic structure and safety of the crowded engineering activity area are ensured, the stability estimation standards of non-key portions and non-crowded engineering activity area are reduced, an environment side slope is distinguished to the maximum, and the method is beneficial for reducing unnecessary side slope dangerous rock body treatment, avoids unnecessary engineering investments and saves the construction period.

Description

technical field [0001] The invention relates to the field of hydropower engineering, in particular to a method for determining the stability of a dangerous rock mass of a hydropower engineering environmental slope. Background technique [0002] At present, there is no unified standard for the evaluation of the stability of dangerous rock masses in environmental slopes, and it is not perfect. The existing evaluation standards do not consider the hazard objects and load application conditions, and do not conform to the reality of hydropower projects. Therefore, it is necessary to establish the evaluation criteria for the stability of dangerous rock mass according to the level of hydraulic structures affected by the dangerous rock mass, the degree of intensive human activities, the period of influence, and the application of loads. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for determining the stabilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/20
CPCY02A10/23
Inventor 张世殊胡金山郝元麟黄润太张安川李文纲石定国江萍冯建明崔长武陈春文刘永波冉从彦谢剑明
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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