【摘要】 平顶山梨园矿宁庄井部分巷道围岩体软弱且具有高应力、大变形、流变等特点。该巷道在原锚网喷支护和可缩性U型钢支架支护方式下变形量大、破坏比较严重,后采用高强U型钢支架支护。经数值模拟和现场工业性试验表明,该支护方式能有效控制围岩体变形,具有良好的支护效果。更多还原

【Abstract】 A part of roadway rock mass is weak and has characteristics such as high stress,big deformation,viscous deformation in Ningzhuang Mine of Liyuan Coal Mine in Pingdingshan.The deformation was large and the roadway was damaged severely in origin support way of bolting with wire mesh and shotcreting and compressible U section steel support.In this condition the high strength U section support is applied.Through numerical simulation and on-site industrial test,this support way can control rock mass deformation effectively and has a good support effect.更多还原