分段凿岩阶段空场嗣后充填采矿法采场跨度的优化  

Optimization of Stope Span for Sublevel Drilling Stage Open Stope with Subsequent Filling Mining Method

作　　者：王玉丁 林卫星 欧任泽 刘奇 龚永超 万孝衡 高剑 张相焕 王亚军 张海云 WANG Yuding;LIN Weixing;OU Renze;LIU Qi;GONG Yongchao;WAN Xiaoheng;GAO Jian;ZHANG Xianghuan;WANG Yajun;ZHANG Haiyun(Changsha Institute of Mining Research Co.,Ltd.,Changsha,Hunan 410012,China;State Key Laboratory of Metal Mine Safety Technology,Changsha,Hunan 410012,China;Hunan Baoshan Nonferrous Metals Mining Co.,Ltd.,Chenzhou,Hunan 424400,China)

机构地区：[1]长沙矿山研究院有限责任公司,湖南长沙410012 [2]金属矿山安全技术国家重点实验室,湖南长沙410012 [3]湖南宝山有色金属矿业有限责任公司,湖南郴州市424400

出　　处：《矿业研究与开发》2024年第6期19-25,共7页Mining Research and Development

基　　金：湖南省自然资源厅科技项目(2022-40)。

摘　　要：采场跨度对矿山企业井下生产作业的安全性、经济效益以及开采效率影响重大。为选择合理的采场跨度,以安徽某铁矿为工程背景,运用FLAC3D数值分析软件和数学方法对分段凿岩阶段空场嗣后充填采矿法两步骤盘区采场跨度进行了研究。首先依据Mathews稳定图法计算结果,设计6组盘区两步骤采场跨度方案;然后利用MIDAS/GTS和FLAC3D构建相应仿真模型进行数值计算;最后基于Critic赋权法,引入采动效应参数和充填材料费用作为成本型评价指标,盘区生产能力作为经济型评价指标,对6组采场跨度方案进行安全性和经济效益综合评价。结果表明:方案Ⅴ(一步骤采场跨度15 m,二步骤采场跨度17 m)在综合评价中评分最高,属最优的两步骤采场跨度方案,且在现场工业试验中能够较好地满足矿山生产的安全、高效和经济需求。The stope span has a significant impact on the safety,economic benefits,and mining efficiency of underground production operations in mining enterprises.In order to select a reasonable stope span,taking a certain iron mine in Anhui as the engineering background,FLAC3Dnumerical analysis software and mathematical methods were used to study the two-step stope span in panel of the sublevel drilling stage open stope with subsequent filling mining method.Firstly,according to the calculation results of Mathews stability diagram method,six groups of two-step stope span schemes were designed in panel.Then,corresponding simulation models were constructed using MIDAS/GTS and FLAC3Dfor numerical calculations.Finally,based on the Critical weighting method,mining effect parameters and filling material costs were introduced as cost-based evaluation indicators,and panel production capacity was used as economic evaluation indicators.The safety and economic efficiency of the six groups of stope span schemes were comprehensively evaluated.The results indicate that schemeⅤ(that the span of one-step stope is 15 mand the span of two-step stope is 17 m)has the highest score in the comprehensive evaluation,which belongs to the optimal two-step stope span scheme,and can better meet the safety,efficiency,and economic needs of mining production in on-site industrial test.

关 键 词：分段凿岩阶段空场嗣后充填采矿法 Critic赋权法 Mathews稳定图法 采场跨度 数值模拟 

分 类 号：TD853.34[矿业工程—金属矿开采]