下霍矿大断面大跨度切眼过断层支护技术探讨  

Discussion on support technology of large section and large span cut through fault of Xiahuo Mine

作　　者：崔浩东 Cui Haodong(Xiahuo Coal Mine,Shanxi Sanyuan Coal Industry Co.,LTD.,Changzhi 046000,China)

机构地区：[1]山西三元煤业股份有限公司下霍煤矿,山西长治046000

出　　处：《江西煤炭科技》2022年第4期103-104,107,共3页Jiangxi Coal Science & Technology

摘　　要：采用数值模拟对下霍煤矿二采区2305切眼过FD_(34)断层时围岩应变进行分析,得出巷道轮廓线顶板、右帮最大位移量300 mm,断层区域采取注浆改性措施、管棚超前支护、锚杆锚索组合支护。支护措施实施后进行14天顶板观测,顶板深部最大变形量为50 mm。Numerical simulation is used to analyze the surrounding rock strain when the 2305 hole cut passes through the FD_(34) fault in the second mining area of Xiahuo Coal Mine.It is concluded that the maximum displacement of the roof and right side of the roadway profile is 300 mm.Grouting modification measures,pipe shed advance support and bolt and cable combination support are adopted in the fault area.The roof observation was carried out for 14 days after the implementation of the support measures,and the maximum deformation in the deep roof was 50 mm.

关 键 词：切眼掘进 过断层 支护措施 数值模拟 

分 类 号：TD322[矿业工程—矿井建设] TD353