8603工作面回采巷道支护方案优化及数值模拟

针对深部软岩巷道围岩变形量大,传统支护结构失效的问题,以煤峪口矿回采巷道为研究背景,综合应用数值模拟和工程实践对原支护方案下巷道破坏特征进行分析,提出采用中空注浆锚索进行补强支护,并采用FLAC3D分析了两种支护方案下巷道围岩的收敛量以及应力分布情况,得出了优化支护方案能够有效控制巷道围岩破碎程度,并通过工程实践得到验...

Optimization and Numerical Simulation of Support Scheme for Mining Roadway in 8603 Working Face

Aiming at the problem of large surrounding rock deformation in deep soft rock roadway and the failure of traditional support structure,taking the mining roadway of Meiyukou Mine as the research background,comprehensively applying numerical simulation and engineering practice to summarize the damage characteristics of the roadway under the original support scheme and put forward The use of hollow grouting anchor cable for reinforcement support.FLAC3D was used to analyze the convergence and stress distribution of the surrounding rock of the tunnel under the two supporting schemes.It was concluded that the optimized supporting scheme can effectively control the degree of tunnel surrounding rock fragmentation and was verified by engineering practice.