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Method for predicting damage mode of high-ground-stress concentrated zone of surrounding rock on lower portion of large gentle-dip-angle weak structural plane

A technology for weak structural planes and high in-situ stress, applied in forecasting, data processing applications, special data processing applications, etc., can solve problems such as the inability to fully satisfy the stress state of large softly inclined weak structural planes, to ensure safety, strong applicability, Efficient effect

Active Publication Date: 2019-11-26
POWERCHINA HUADONG ENG COPORATION LTD
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the above-mentioned conventional geostress test and regression analysis cannot fully satisfy the actual engineering situation of evaluating the geostress state under the large-scale gently inclined weak structure surface

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  • Method for predicting damage mode of high-ground-stress concentrated zone of surrounding rock on lower portion of large gentle-dip-angle weak structural plane
  • Method for predicting damage mode of high-ground-stress concentrated zone of surrounding rock on lower portion of large gentle-dip-angle weak structural plane
  • Method for predicting damage mode of high-ground-stress concentrated zone of surrounding rock on lower portion of large gentle-dip-angle weak structural plane

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Embodiment Construction

[0027] The present invention is described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] A method for predicting the failure mode of a high-in-situ stress concentration zone in the surrounding rock below a large-scale gently dipping weak structural surface, which is suitable for hard and complete rock mass under high-stress conditions, including the following implementation steps:

[0029] A method for predicting the failure mode of the high-in-situ stress concentration zone of surrounding rock at the lower part of a large-scale gently inclined weak structure surface, the method for predicting the failure mode of the high-in-situ stress concentration zone of the surrounding rock at the lower part of the large-scale gently inclined weak structure surface comprises the following steps:

[0030] (1) Carry out engineering geological survey of the underground caverns in the project area, especially to find out the scale, character, p...

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Abstract

The invention provides a method for predicting a damage mode of a high ground stress concentration zone of surrounding rock on the lower portion of a large gentle dip angle weak structural plane. Theprediction method has the advantages of being low in requirement, high in speed, convenient to use and high in efficiency, does not interfere engineering construction, and does not influence the engineering progress, can verify the judgment result and the excavation response in time, is high in reliability and applicability, can effectively avoid adverse factors such as high requirements, high cost, long time, high technical difficulty and incapability of full-area coverage of a conventional test method, and the method is an effective supplement for the conventional test method. The damage position, the damage form and the damage degree of the surrounding rock of the cavern are quickly and accurately predicted through the position relation between the underground cavern and the large weakstructural plane, targeted supporting measures are taken in advance, and the stability of the cavern and the safety of constructors are ensured.

Description

technical field [0001] The invention relates to a method for predicting the failure mode of a high-in-situ stress concentration zone in surrounding rocks at the lower part of a large-scale soft structure surface with a gentle dip angle, and is suitable for excavation and support of underground tunnels in high-in-situ stress areas in industries such as water conservancy and hydropower, mining, petroleum, and transportation. Background technique [0002] With the continuous construction of large-scale projects such as water conservancy and hydropower, mining, petroleum, and transportation industries in my country, deep-buried underground tunnel projects are becoming more and more common, and high ground stress is an important problem faced by these projects. Under the condition of high in-situ stress, the surrounding rocks of underground engineering mainly have engineering geological problems such as rockburst, spalling, rupture, continuous relaxation of surrounding rocks, and ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q10/04G06Q50/08
CPCG06Q10/04G06Q50/08Y02E10/20
Inventor 石安池宋刚王鹏李孙权唐鸣发洪望兵
Owner POWERCHINA HUADONG ENG COPORATION LTD
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