煤岩应变软化特性与地下硐室稳定性分析

Strain softening characteristics of coal rock and chamber stability

文章讨论了煤岩峰值强度破坏的特征，提出了描写这种破坏变形的方程，分析了稳定、非稳定的物理概念，并采用能量准则给出煤岩变形体非稳定临界状态判别准则，对圆形硐室受静水压力的稳定性作了具体分析。

Abstract This paper discusses the characteristics of failure after peak strength of coal rock,puts forwand formulas describing this failure,analyses the physical concepts of stability and unstability,gives a criterion using energy rules,in the meamtime,analyses the stability of circle chamber under pressure head.