摘要
根据煤的变形破坏特点，对煤变形采用弹塑性应变软化模型，根据条带开采的特殊性，用三维受力单元模型来分析。通过数学运算推导出条带煤柱塑性区应力及宽度的表达式。最后，对影响塑性区宽度的几个主要因素作了分析。
In this paper,the elastic and plastic strain softening model is applied to the coal deformation according to the characteristic of coal deformation and failure.In analysis,the three dimensional stress unit model is used based on the speciality of the strip mining.A formula of the stress and the width of plastic zone in strip coal pillars is derived by strictly mathematical calculation.At last,several major factors which affect the width of plastic zone are analysed.
