境界顶柱和采场结构参数设置关系到露天和地下联合开采矿山的安全和资源回收率,科学设置采场结构参数具有重要的工程价值。本文以某矿露天地下联合开采工程为背景,在理论分析法计算矿房宽度基础上,结合有关研究成果和矿山开采实际,设计12种境界顶柱和矿房宽度组合方案,采用FLAC3D数值计算软件模拟分析分步开采过程中关键监测点的位移、剪应变增量和塑性区变化规律,探索最佳顶柱厚度和矿房宽度组合。结果表明,随境界顶柱厚度增加,矿房宽度可相应增大,但增大程度有限,矿房极限宽度为18m；矿山最佳方案为境界顶柱50m和矿房宽度15m,30m顶柱15m矿房宽方案次之。%The parameters setting of the top pillar and stope structure is related to the safety and resource recovery rate of the combined mining of open pit and underground mining,setting of stope structure parameters with scientific method has important engineering value. With the engineering background of a mine open pit and underground combined mining,this article is based on the theoretical analysis calculation stope width of foundation,combined with the relevant research results and mining practice,gives design of 1 2 kinds of boundary roof column and stope width combination scheme,using the FLAC3D data calculation software to simulate and analyze the displacement,shear strain increment and plastic zone change of the key monitoring points in the process of stepwise mining..The results show that with the boundary pillar thickness increasing,the width of stope can be increased,but increases to a limited extent,stope limit width of 18m,mine optimum plan of the pillar 50m and stope width of 15m,the second plan follows with 30m pillar and 15m wide stope.
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