摘要
针对大断面特厚煤层煤巷支护难题,对巷道围岩变形破坏特征进行了研究。采用有限差分软件FLAC^(3D)对巷道围岩垂直应力、巷道围岩塑性变形破坏及巷道围岩垂直方向上的位移变化进行数值模拟,并进行了现场工程验证。提出了"普通锚杆+锚索+钢筋锚网+W钢带"耦合支护方案。
Aiming at the coal roadway support problem with extremely thick coal seam,made a study of deformation and failure characteristics. By using finite difference software FLAC^3D,simulated and analyzed vertical stress of the roadway surrounding rock, plastic deformation and failure and displacement change of the roadway surrounding rock in the vertical direction,also performed the engineering verification at the site. The coupling support program with ＂common bolt＋anchor cable＋steel bar anchor net＋the steel band of model w＂ is put forward.
出处
《煤炭技术》
CAS
北大核心
2016年第6期55-57,共3页
Coal Technology
关键词
松动圈
数值模拟
塑性破坏
顶板下沉量
loose zone
numerical simulation
plastic failure
roof convergence
