基于正交试验的近距离煤层回采巷道支护参数设计  

Supporting parameters design of roadway in close distance coal seams based on orthogonal test

作　　者：张伟光[1] 杨长德[1] 谢峰震[1] 王鹏[1] 赵峰[1] 

机构地区：[1]新疆工程学院采矿工程系,新疆乌鲁木齐830091

出　　处：《煤炭工程》2016年第6期61-64,共4页Coal Engineering

基　　金：新疆工程学院科研基金项目(2012XGY2161412)

摘　　要：根据四棵树煤矿近距离煤层上层煤边界保护煤柱下回采巷道特征,采用基于正交试验设计的数值模拟方法,研究了不同锚杆长度、不同间排距条件下巷道围岩变形量的影响敏感度,得到了长度因素和间排距因素的极差分别为110和33;并分析了不同长度锚索补强支护条件下围岩变形量。结果表明：锚索长度介于4.5-5.5m之间时,变形量随其增大而减小;锚索长度大于5.5m时,变形量随其增大而增大。According to the mining roadway feature under the protection coal pillar of close-distance seams in the Sikeshu coalmine,numerical simulation based on orthogonal test is applied,to research the effect of bolt length,spacing to the deformation of roadway,the bolt length＇ s range is 110 and spacing ＇s range is 33. The surrounding rock deformation of roadway with different anchor length is analyzed. The results show that, the roadway deformation increases with the increase of anchor length within the range of 4.5 - 5.5m,but otherwise when the anchor length is over 5.5m.

关 键 词：近距离煤层 回采巷道 锚杆支护 正交试验 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]