【摘要】 以平煤集团一矿戊9,10-31020综采面的地质条件为基础,运用计算机数值模拟系统,分析了顶板破碎的原因和程度;根据锚杆作用模型,提出了高强高预紧力锚杆控制围岩的技术方案,确定了锚网支护参数。该方案工程实施效果达到了预期目标,经济效益明显,可在类似工作面推广应用。更多还原

【Abstract】 This article analyzed the reason and extent of roof crack on the basis of geologic condition of wu9,10-31020 fully mechanized face in No1 mine of Pingdingshan Coal Group by computer numerical simulation system,put up a technical project of control surrounding rock by high-strength and pretightening force blot,determined parameters of bolting with wire mesh.The project achieved expectant goal.Because of the evident economic benefits,it could be applied widely in analogous mechanized face.更多还原