沿空留巷巷道围岩变形量的影响因素分析

Gob Roadway Surrounding Rock Deformation Analysis Based on Grey Correlation Degree Method

首先采用灰色关联度理论分析了采深、采高、充填体宽度、工作面长度、煤层倾角、巷道断面大小等因素对顶底板移近量、两帮移近量的影响程度。然后采用正交数值模拟方法对沿空留巷围岩变形量的因素进行了分析。研究结果表明:工作面埋深和巷道断面面积对沿空留巷的围岩变形量具有较大的影响,而采高、煤层倾角及工作面长度对沿空留巷巷道变形量影响相对较小。

Based on the grey theory and the method of grey correlation degree,a multi variant correlation between the surrounding rock deformation and the factors,such as the depth of the working face,mining height,the width of the filling body,the length of the working face,the dip of the coal layer and the section area of the roadway are carried out. Then the factors of gob roadway surrounding rock deformation were analyzed by using orthogonal numerical simulation. The results show that the depths of the working face and the section area of the roadway have a more influence on the surrounding rock deformation in gob roadway.