Rapid identification method for damage mode of rock mass structure
A technology for structural damage and identification methods, which is applied in the direction of testing material strength by applying stable shear force, testing material strength by applying stable tension/pressure, and measuring devices. It takes a lot of time and energy to achieve the effect of simple operation, strong engineering applicability and advanced technology
Pending Publication Date: 2022-03-22
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
View PDF0 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In order to solve the deficiencies of the prior art, the present invention aims to solve the problem that in the prior art, it takes a lot of time and energy to judge the failure form of the rock mass structure, which cannot meet the needs of rapid judgment in engineering
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0068] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0069] The present invention will be further described below in conjunction with accompanying drawing: a kind of rapid identification method of rock mass structure failure mode, its implementation process is as follows figure 1 As shown, the specific implementation steps are:
[0070] A. Measure the in-situ stress of the rock mass by stress relief method or hydraulic fracturing method, and dete...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a rapid identification method for a damage mode of a rock mass structure. The rapid identification method comprises the following steps: determining the maximum principal stress and the minimum principal stress of an environment where a rock mass is located through crustal stress measurement; the cohesive force and the internal friction angle of the rock are determined through a rock direct shear test; a typical structural surface in the rock mass is taken for a structural surface rebound test and a shear test, and the rebound strength and the basic friction angle of the structural surface are determined; counting the distribution form of the structural surface, and determining the roughness of the structural surface and the included angle beta between the normal direction of the structural surface and the maximum principal stress direction; assuming that the structural surface meets a Barton-Bandis yield criterion, obtaining a structural surface damage criterion; assuming that the rock meets the Mohr-Colomb yield criterion, and obtaining a rock failure criterion; substituting the rock shear strength parameter into a rock damage criterion, substituting the structural surface physical and mechanical property parameter into a structural surface damage criterion, and comprehensively judging a rock mass structure damage mode; complex finite element calculation and indoor tests are avoided, and the method has the advantages of being easy and convenient to operate, high in calculation precision and high in engineering applicability.
Description
technical field [0001] The invention belongs to the technical fields of geotechnical engineering such as geological disasters, water conservancy, mining, transportation, etc., and specifically relates to a method for quickly identifying failure modes of rock mass structures, and is especially suitable for quickly judging the rock mass failure conditions in areas where joints and fissures are relatively developed. Background technique [0002] The mechanical properties of the rock mass have a significant impact on the construction of the project, especially the existence of weak structural planes in the rock mass, which will not only weaken the mechanical properties of the rock mass, but also easily form a through sliding surface, which seriously threatens the safety of the project and becomes a constraint The key issues in the construction of major projects in our country. Therefore, developing a rapid identification method for the failure mode of rock mass structure is an e...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01N3/24G01N3/52G01N3/12
CPCG01N3/24G01N3/52G01N3/12G01N2203/0003G01N2203/0019G01N2203/0025G01N2203/0048G01N2203/0067G01N2203/0083G01N2203/0216G01N2203/0218G01N2203/0244G01N2203/0676G01N2203/0682
Inventor 康景宇盛谦付晓东杜文杰丁海锋
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI