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Method for determining grade of surrounding rock

A technology of surrounding rock classification and surrounding rock classification, applied in the field of classification, can solve the problems of high exploration cost, long time, and inability to obtain data quickly

Pending Publication Date: 2021-05-14
BEIJING INST OF WATER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Qualitative classification has the outstanding advantages of clear concept and strong operability in engineering application, but in actual operation, technical personnel are required to have professional geological knowledge and rich engineering experience; quantitative classification has the advantage of high accuracy, but it requires investment in comprehensive Exploration technology means, the cost of exploration is high, it takes a long time, and relevant data cannot be obtained quickly

Method used

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  • Method for determining grade of surrounding rock
  • Method for determining grade of surrounding rock
  • Method for determining grade of surrounding rock

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Embodiment Construction

[0034] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0035] Embodiments of the present invention provide a method for determining the grade of surrounding rock, such as figure 1 As shown, the method includes:

[0036] Step S100: Determine the characteristics of the rock mass during the survey period, and classify the surrounding rock;

[0037] The rock mass characteristics include: rock strength, rock mass integrity, and rock weathering degree.

[0038] The rock strength during the survey period can be determined by any strength measurement method in engineering, preferably, the rock strength during the survey period can be determ...

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Abstract

The embodiment of the invention provides a method for determining the grade of surrounding rock, and belongs to the field of comprehensive pipe gallery engineering. The method comprises the following steps: determining rock mass characteristics in a reconnaissance period, and grading surrounding rocks; and determining rock mass characteristics in a construction period, and rechecking and verifying the surrounding rock grading, wherein the rock mass characteristics comprise rock strength, rock mass integrity and rock weathering degree. By means of the technical scheme, the rock strength, the rock mass integrity and the like can be accurately divided, the requirement for field conditions is not high, rock mass data can be rapidly obtained, and a quantitative evaluation basis is provided for classification of the surrounding rock types of the comprehensive pipe gallery in the mountainous area in the exploration period and the construction period.

Description

technical field [0001] The invention relates to the field of comprehensive pipe gallery engineering, in particular to a method for determining the grade of surrounding rock. Background technique [0002] The classification of surrounding rock types is one of the most important design parameters for underground caverns in mountainous areas. The classification of surrounding rock types is directly related to the design of support schemes and construction investment costs, and even related to whether the project can be successfully implemented. Therefore, it has always been subject to domestic Widespread concern in the field of underground engineering at home and abroad. [0003] The classification of tunnel surrounding rock type is determined on the basis of rock strength index and rock mass integrity index. At present, there are hundreds of classification methods for surrounding rock type at home and abroad. There are different regulations for the identification of tunnel su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/52G01V1/52G01N33/00G01N33/24G01N29/04G01N29/07
CPCG01N3/52G01V1/52G01N33/0001G01N33/24G01N29/043G01N29/045G01N29/07G01N2203/0083G01N2291/011G01N2291/01G01N2291/0232G01V2210/1429
Inventor 杨良权袁鸿鹄刘勇张琦伟张如满汪德云王宗刚吴广平孙宇臣赵志江辛小春王魏东蒋少熠
Owner BEIJING INST OF WATER
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