中厚倾斜破碎矿体下向进路法开采工艺及稳定性研究  

Study on Mining Technology and Stability of Downward Filling Mining Method for Medium-Thick Inclined Broken Ore Body

作　　者：薛田喜 常洋凯 XUE Tianxi;CHANG Yangkai(Jiaojia Gold Mine of Shandong Gold Mining(Laizhou)Co.,Ltd.,Laizhou,Shandong 261441,China;School of Resources and Safety Engineering,Central South University,Changsha,Hunan 410083,China)

机构地区：[1]山东黄金矿业(莱州)有限公司焦家金矿,山东莱州市261441 [2]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《矿业研究与开发》2023年第6期15-21,共7页Mining Research and Development

摘　　要：根据焦家金矿破碎矿体的特点与现场实际,对该矿深部破碎矿体开采采用C料尾砂下向充填采矿法。对下向进路安全系数进行分析,得到了量佳进路参数,即承载层厚1.6 m、进路宽1.5m、高3.4m。基于ABAQUS软件建立二维平面模型,模拟不同厚度人工假顶下的回采工作,得到进路变形、塑性区分布以及顶板沉降规律,优选出最佳人工假顶厚度为1.0m。研究结果为焦家金矿深部破碎矿体开采提供了理论支撑。According to the characteristics of the broken ore body and the actual situation of the site,the deep broken ore body mining in Jiaojia Gold Mine adopts the downward filling mining method with C material tailings.The safety factor of the downward approach was analyzed,and the optimal approach parameters were obtained,including the bearing layer thickness of 1.6m,the approach width of 1.5m,and the approach height of 3.4m.Based on ABAQUS software,a two-dimensional plane model was established to simulate the mining work under different thickness of artificial roofs.The deformation of the approach,distribution of plastic zones,and roof settlement patterns were obtained,and the optimal thickness of artificial roofs was selected as 1.0m.The research results provide a theoretical support for the mining of deep broken ore bodies in Jiaojia Gold Mine.

关 键 词：破碎矿体 下向充填采矿法 回采进路 安全系数 数值模拟 

分 类 号：TD85[矿业工程—金属矿开采]