True triaxial test method of simulating extensional rock burst

A technology for simulating tensile type and test method, applied in the field of true triaxial test simulating tensile type rockburst
CN106501081AInactive Publication Date: 2017-03-15GUANGXI UNIV
4 Cites 11 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGXI UNIV
Publication Date
2017-03-15
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a true triaxial test method of simulating an extensional rock burst. The method employs a true triaxial loading route and a boundary condition of single side freeness and five side stressing, and utilize a cuboid rock sample in a single side freeness and three directional compressive stress state to simulate a special mechanical behavior of a representative rock unit of field wall rock in a tangential stress concentration process by applying a certain three directional load and controlling a loading speed of one direction. The method can be used for representing a whole inoculation and occurrence process of the extensional rock burst in a laboratory. The method solves the problem that the traditional indoor test method cannot simulate the extensional rock burst under a complex stress condition reasonably and has important practical significance and academic value in promoting mechanism and prediction studies of the rock burst.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The invention belongs to the field of rock mechanics test research, and in particular relates to a true triaxial test method for simulating tensile rock burst. Background technique

[0002] In recent years, large-scale geotechnical engineering construction has gradually expanded to the depths, and the high ground stress environment in which it is located can easily induce rock burst disasters. Rockburst refers to the release of radial (perpendicular to the excavation boundary) stress during the excavation of deep underground engineering, and the continuous concentration of stress in the tangential direction (parallel to the excavation boundary and vertical to the tunnel axis), and the hardening within a certain depth near the excavation boundary The ejection failure phenomenon of brittle surrounding rock. Due to the sudden occurrence and limited underground engineering space, rock bursts often cause casualties, equipment damage, and severe damage to the ex...

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