矿井巷道支护应力状态分析

Stress State Analysis of Mine Roadway Support

针对煤销集团兼并重组矿井的现状,结合集团矿井自身特点,采用理论分析和数值模拟的方法对矿井巷道支护应力状态问题进行了分析研究。结果表明:巷道围岩应力以压应力为主,在巷道两帮和拱脚处应力值较大,容易出现应力集中;巷道围岩应力变化主要集中在2倍直径范围内;支护后巷道围岩应力向巷道内转移。

Aiming at the current situations of the mergers and reorganization process of the group and combining with the group mine own characteristics, stress state problems of mine roadway support are analyzed by theoretical analysis and numerical simulation. The result shows that surrounding rock stress is mainly the compressive stress, the stress value in two sides of roadway and arch foot is com- paratively large and prone to stress concentration. The variety of the stress in the surrounding rock mainly centralized in the diameter range of 2 times. The stress of surrounding rock transfers to the roadway after supporting.