【摘要】 针对某矿山开采历史悠久,民采乱采严重的现象,在充分调查的基础上结合节理裂隙分析结果和室内岩石力学试验,对矿岩稳固性进行了分析,为采空区稳定性分析及治理方案的制定提供科学依据。根据采空区跨度和顶板暴露岩体种类综合分析得出了采空区存在安全隐患的结论,并针对不同顶板暴露面积的采空区和竖井分别提出了不同的治理方案:对暴露面积小于200m~2的采空区用崩落围岩的方式释放地压和充填空区;对暴露面积大于200m~2的采空区用废石或地表碎石土进行充填;对需回填封闭的竖井,采用废石、块石回填至井口下5m处,再向上用粘性土夯实回填或用混凝土回填至地表。更多还原

【Abstract】 According to the serious phenomenon of disordered mining in Wang Yuan copper mine,the stability of rock is analyzed based on the joint fissure analysis and laboratory rock mechanics test. Different treatment schemes are proposed for different goaf and vertical shaft based on the span of goaf and physico-mechanical properties of roof rock. For the exposure area less than 200 m~2,caving surrounding rock to fill. For the exposure area more than 200 m~2,fill with waste rock or gravel soil. For the backfill or closed shaft,first use the waste or stone backfilling to 5 m below the wellhead,then use the cohesive soil to reinforce the backfill or backfill to the surface with concrete.更多还原