采动影响下巷道支护参数的模拟分析及应用

潞宁煤业公司二二采区大巷在采动影响下常出现过度变形的现象。为避免在二四采区出现类似问题,以二四采区辅运大巷为背景,根据二四采区的地质条件,通过数值模拟分析,确定巷道的支护参数;实施后监测其支护效果,辅运大巷掘进期间顶底板最大移近量为63 mm,两帮为54 mm,在24102工作面采动影响下,顶板和两帮位移量分别增大了35 mm、32 mm,三条大巷围岩松动圈发育深度均小于锚杆有效锚固范围,围岩整体稳定,成功防止了大巷的过度变形。

Simulation Analysis and Application of Roadway Support Parameters under Mining Influence

In order to avoid excessive deformation under the mining influence of in mining areas of Luning Coal Industry Co.,Ltd.,the author presents the reasonable support parameters through numerical simulation analysis,whose support effects show the displacements of the roof and the two gangs have increased by 35 mm and 32 mm respectively and the development depth of the surrounding rock loosening circles of the three roadways is less than the effective anchorage range of the anchor rod.