厚层坚硬直接顶巷道大排距锚杆支护方案设计  

Design of Bolt Supporting Scheme with Large Row Spacing in Thick and Hard Immediate Roof Roadway

作　　者：李胜伟[1] Li Sheng-wei(Jingu Coal Industry,Xingtai Mining Group Co.,Ltd.,Jizhong Energy Group,Shanxi Linfen 042499)

机构地区：[1]冀中能源邢台矿业集团有限责任公司金谷煤业,山西临汾042499

出　　处：《山东煤炭科技》2019年第7期77-78,81,共3页Shandong Coal Science and Technology

摘　　要：为解决厚层坚硬直接顶巷道支护问题,以金谷煤矿10900回风顺槽为工程研究对象,分析了现有支护方式的不足,采用数值模拟的方法研究了巷道围岩变形特征。结果显示此类条件下巷道顶板下沉小,两帮变形大,制定了“高强度、高刚度、低密度”的大排距巷道锚网支护方案,应用效果良好。In order to solve the support problem of thick and hard immediate roof roadway,the paper takes the 10900 return-air trough of Jingu Coal Mine as the research object to analyze the defects of existing support methods.The deformation characteristics of roadway surrounding rock are studied by numerical simulation.The results show that the roof subsidence of roadway is slow and the deformation of both sides is large under such conditions.A“highstrength,high-stiffness and low-density”bolt-mesh supporting scheme with large row spacing is formulated,and the application effect is good.

关 键 词：坚硬 直接顶 锚杆 支护 

分 类 号：TD353[矿业工程—矿井建设]