近距离煤层工作面运输巷锚网索支护优化设计

摘要

针对金达煤矿原有的"锚网+工字钢棚"联合支护下工人劳动强度高、掘进速度慢等问题,根据地质力学测试结果提出了锚网索支护优化设计方案,即采用树脂加长锚固锚杆组合支护系统和锚索补强支护.并采用FLAC3D数值模拟进行分析,结果表明,10107运输巷采用锚杆、锚索组合支护系统后,巷道围岩变形得到有效控制,支护效果明显,生产期间完全能满足巷道的安全使用.%Aiming at the high labor intensity and slow driving rate under the original "bolt-mesh + joist steel shed" support in Jinda Coal Mine,an optimization supporting scheme design of "bolt-mesh-cable" was proposed according to the results of geological mechanics test,which uses combined bolting system of extensible bolt and supplement support of cable.Simulation analysis of FLAC3D showed that,with the application of bolt-cable combined support system,the surrounding rock deformation of 10107 transportation roadway was effectively controlled,the supporting effect was significant,and the roadway was used safely during production.