和顺隆华煤业二采区煤层下山锚杆支护参数模拟研究  

Simulation Study on Bolting Support Parameters of Coal Seam Roadway in Heshun Longhua Coal Industry No.2 Mining Area

作　　者：黄欢 HUANG Huan(Handan Mining Group Co.,Ltd.of Jizhong Energy Group,Handan,Hebei Province,056000 China)

机构地区：[1]冀中能源邯郸矿业集团有限公司,河北邯郸056000

出　　处：《科技资讯》2024年第21期188-190,共3页Science & Technology Information

摘　　要：隆华煤业二采区的开拓巷道会布置在煤层中,相较于一采区,巷道围岩地质情况发生了变化。为确保锚杆支护参数在现场应用得科学、有效,运用悬吊理论,计算了锚杆长度、间排距等参数的理论数值,并采取FLAC3D数值模拟的方法,得出了不同埋深、锚杆长度、锚杆间排距参数影响巷道围岩应力、塑形区的演化规律,确定了锚杆设计方案,并给出了支护建议。经现场验证,方案可行,巷道稳定效果良好。The opening tunnels in the second mining area of Longhua Coal Industry are all arranged in the coal seams,which has changed the geological conditions of the surrounding rock compared to the tunnels in the first mining area.In order to ensure the scientific and effective application of bolting parameters in the field,the theoreti-cal values of bolt length,row spacing and other parameters are calculated by using Suspension theory,and the FLAC3D numerical simulation method is adopted to obtain the evolution law of stress and plastic zone of tunnel surrounding rock under the influence of different buried depth,bolt length and row spacing parameters,the anchor design scheme is determined,the bolting proposal is also given.It is proved that the scheme is feasible and the stabil-ity effect of tunnel is good.

关 键 词：悬吊理论 埋深 锚杆长度 锚杆间排距 数值模拟 

分 类 号：TD31[矿业工程—矿井建设]