窄煤柱护巷机理的数值模拟分析

Numerical simulation on the principle of supporting roadway with narrow coal pillar

摘 要:窄煤柱护巷机理的数值模拟分析以沈阳煤业集团红阳矿的“孤岛”工作面为例,基于岩体的斯近损伤模型,应用RFPA程序计算分析了不同尺寸护巷煤柱的变形场和应力场.着重探讨了窄媒柱沿空掘巷的护巷机理、研究结果表明了护巷煤柱宽度对回采巷道的围岩变形有很大的影响,当煤柱宽度为、sin时巷道最容易维护。

With the example of an 'island' coalface of certain mine of Shengyang, based on the model of rock mass gradual damage, RFPA is used to analyze the deformation field and stress field of different size of coal pillars supporting roadway, and discuss the principle of supporting roadway with narrow coal pillar in this paper. The result of study shows that the width of coal pillar has important influence on the deformation of roadway surrounding rock, and the maintenance of roadway is easy when the size of coal pillar is 3-5 meter.