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在使用无底柱分段崩落法的矿山,大都存在着地压现象。其主要表现是采矿进路和联络道的变形破坏。对采矿进路在开挖和回采过程中各阶段受力情况的分析表明,进路的变形、破坏主要是受到岩体初始静应力、爆破动应力和矿柱支撑应力的综合作用的结果。
In the use of pillarless subsidence caving mines, most of the existence of the phenomenon of pressure. Its main manifestation is the deformation and destruction of the mining approach and the contact road. The analysis of the stress in various stages during the excavation and recovery of the mining approach shows that the deformation and failure of the approach are mainly caused by the combined effects of initial static stress of rock mass, blasting dynamic stress and supporting pillar stress.