Periodical zonal character of damage near the openings in highly-stressed rock mass conditions

被引：14

作者：

Makarov, Vladimir V. ^{[1
]}

Guzev, Mikhail A. ^{[1
]}

Odintsev, Vladimir N. ^{[2
]}

Ksendzenko, Lyudmila S. ^{[1
]}

机构：

[1] Far Eastern Fed Univ, Vladivostok, Russia

[2] Russian Acad Sci, Moscow, Russia

来源：

JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING | 2016年 / 8卷 / 02期

关键词：

Rock failure; Openings; Zones; Modeling;

D O I：

10.1016/j.jrmge.2015.09.010

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Rock mass damage at great depths near underground openings is often of a zonal character. However, the classical elastoplastic theory fails to explain sufficiently all properties of zonal failure structures. A new non-Euclidean mathematical model for highly-stressed rock mass was developed based on the principles of mechanics of defected material and non-equilibrium thermodynamics. Methods were developed to determine model parameters that provide satisfactory correspondence between the experimental findings concerning faulted zonal structures near openings at great depths and mathematical calculations. The mechanism of this phenomenon was discovered which consisted in a periodical character of stresses in the surrounding rock mass and development of tensile macrocracks at zones of maximal tangential stresses. Main relationships between the cracking zone width and rock mass strength were established. (C) 2016 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V. All rights reserved.

引用

页码：164 / 169

页数：6

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