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为进一步研究倾斜厚煤层支护技术,采用理论分析和数值模拟方法,研究深部巷道围岩稳定问题,认为深部巷道围岩的基本控制方法是提高围岩强度、转移围岩高应力以及采用合理的支护技术,并提出了错层位外错式相邻巷道联合支护技术。以庞庞塔矿为工程背景,通过对比巷道单巷布置与错层位外错布置2种情况下的支护效果,回归分析错层位外错式布置下相邻巷道联合支护区锚固体强度。经分析论证表明:错层位外错式布置下相邻巷道联合支护区锚固体强度优于单巷布置下锚固体强度。
In order to further study the supporting technology of inclined thick coal seam, the theoretical analysis and numerical simulation are used to study the stability of surrounding rock in deep tunnel. It is considered that the basic control method of surrounding rock in deep tunnel is to improve the strength of surrounding rock, transfer the high stress of surrounding rock and adopt reasonable Support technology, and puts forward the staggered-layer fault-type adjacent roadway joint support technology. Taking Pangpupta mine as the engineering background, by contrasting the supporting effect under single laneway arrangement and staggered-layer outer lining arrangement, the regression analysis of the anchorage body strength. The analysis shows that the strength of the anchorage in the joint support zone of the adjacent roadway with the staggered-layer erroneous arrangement is better than that of the anchorage in the single lane.