大倾角蹬空煤巷支护方式数值模拟研究

Study on Numerical Simulation of Support Method for High Inclined Overhead Seam Gateway

淮南矿业集团新庄孜矿66111工作面运输巷支护问题,属于典型的蹬空条件下大倾角复合顶板煤层巷道围岩稳定性控制问题。文章利用FLAC模拟软件对巷道的不同支护形式进行了数值模拟研究,得出在类似地质条件下的支护形式需要以锚杆索的及时主动性能为基础,并采取其他补强手段,使支护形式具有高强度、高整体性的特点。采用锚架联合支护能够很好的控制巷道围岩变形,对类似巷道的围岩控制具有一定的借鉴意义。

The support question of headentry of 66111 coalface in Xinzhuangzi Colliery of Huainan Mining-Group is a typical question about roadway stability kicking goaf with large dip and composite roof.The article simulated different support methods with FLAC,and reached a conclusion that the support method under similar condition needed a positive and initiative bolting support system,then take reinforcement measures to achieve high strength and integrity.The combined support method using anchor and U-shelf can effectively control the deformation of surrounding rock,with reference to similar condition roadway controlling.