Seismic and electric anisotropy as the stress state indicator in a fractured rock mass

The present paper offers the parameter of anisotropy for the use in processing experimental data of the joint seismic and electric monitoring with the aim of studying the process of consolidation in a fractured rock mass under a strong seismic load. Based on the interpreted experimental results, a seismic-electrical model is constructed for the epicenter zone of the Altai earthquake occurred on September 27, 2003. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 31–46, July–August, 2006.     

用物理相态法确定煤岩体应力状态和冲击倾向性

文章从煤岩的孔隙结构、吸附特性、渗透特性，讨论了孔隙中的水分子与煤岩体矿物分子的相互作用，对煤岩体中水的存在状态进行了分类，同时研究了在应力作用下孔隙水的运移和转化以及对岩石力学性质的影响。提出用煤岩自然含水率与吸水率确定煤岩冲击倾向性的判断准则。     

Implementation of the calculation method for stress state in rock mass with backfill

The author presents a method for calculating stress-strain state of host rocks and filling masses with allowance for the sequence of underground mining, and determines the stress filed redistribution in the course of extraction of flat-dipping ore bodies and of the reserves under open pit bottom. The mining variants most preferred from the geomechanical viewpoint are substantiated. __________ Translated from Fiz.-Tekh. Probl. Razrab. Polezn. Iskop., No. 5, pp. 14–26, September–October, 2008.     

Calculation of the stress state of a rock mass using in-situ data on depormation

The stress-strain state of three basic problems of elasticity theory is investigated for any part of a rock mass modeled by a half-plane. An integral relation is established between the stress and displacement components of the boundary of the half-plane. This makes it possible to obtain all components in explicit form through the boundary conditions. These results permit use of in-situ stress and/or displacement measurements to restore deformation in the half-plane. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No 3, pp. 27–35, May–June, 1999     

Estimate of stress state in rock masses adjacent to open pit walls

It is proposed to study the action exerted by the tectonic stresses on stability of open pit walls by using the method of core disking in exploratory holes and the tectono-physical method based on the analysis of tectonic structure of a rock mass. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 36–44, May–June, 2007.     

Calculation of stress state of a rock mass in the zones of local structural inhomogeneities

A method is proposed for determining stress state of a rock mass basing on joint solution of problems on the main calculated domain and the zone of local inhomogeneity. The solutions are conjugated by satisfying conditions of continuous displacements on the boundary of these regions. The efficiency of the method proposed is shown in comparison to the traditional schemes of the finite-element method, and a numerical example of estimating stability of subvertical crack undermined by extraction chambers is cited.__________Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 50–59, September–October, 2004.     

巷道围岩二次应力状态弹性阶段的试验研究

为了实现对巷道开挖卸荷过程中真实加、卸载过程的模拟,掌握巷道(隧道)围岩在开挖卸荷条件下的变形规律及破坏机制,采用具有自主知识产权的巷道围岩开挖卸荷模型试验系统,对有机玻璃围岩试件进行开挖卸荷条件下巷道围岩二次应力状态弹性阶段的模拟试验,并与已成熟的巷道围岩二次应力状态弹性阶段的理论解析进行对比分析.试验过程中监测到围...