基于λ模糊测度和Choquet积分的回采方案动态优选  

Dynamic Optimization of Stoping Scheme Based on λ Fuzzy Measure and Choquet Integral

作　　者：戴兴国[1] 唐凌[1] 陈增剑 聂峥[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《黄金科学技术》2016年第2期1-7,共7页Gold Science and Technology

基　　金：湖南有色研究基金项目"高浓度细粒级全尾砂充填工艺研究"(编号:YSZN2013CX01)资助

摘　　要：为确定冬瓜山铜矿深井盘区隔离矿柱合理的采场参数和回采顺序以提高其开采安全性,针对传统方法中未考虑属性间交互作用和只进行静态分析的不足,基于λ模糊测度和Choquet积分构建了动态综合评价法,提出了选择回采方案的新思路。结合冬瓜山铜矿52#隔离矿柱的工程实际,提出4种回采方案,选取侧壁最大主应力、端壁最大主应力、侧壁最大水平位移、顶板最大垂直位移和塑性区体积作为评价指标。利用MIDAS/GTS与FLAC^(3D)耦合建模获取初始数据,得到交互度为-0.99,-0.5,0,1,10时各方案的综合优越度,通过对比确定从厚至薄回采,从G1到G7各回采单元的长度依次为36,34,34,52,70,70,70 m,端壁和侧壁预留2~4 m厚矿柱,采一充一的回采方式为最优回采方案。In order to determine reasonable stope parameters and mining sequence which purpose is to increase the safety of mining the panel isolated pillar of deep well, and in view of the defects of the traditional methods do not consider the interaction between evaluation factors and do static analysis only,based on A fuzzy measure and Choquet integral,a new idea of dynamic comprehensive evaluation method was put forward to select mining scheme. According to the engineering practice of 52# isolated pillar in Dongguashan copper deposit,four kinds of mining schemes was put forward,and five evaluation factors which influencing the mining scheme selection were determined,that is the maximum main stress of sidewall,the maximum main stress of end wall,the maximum horizontal displacement of lateral wall, the maximum vertical displacement of roof and the plastic zone size, and the initial datas of evaluation were obtained by means of coupling modeling between MIDAS/GTS and FLAC30, and the integrated superior degree of each scheme was calculated when interactivity degree is -0.99,-0.5,0, 1 and 10 respectively.Finally,by comparing the integrated superior degree the optimal extraction scheme was determined, which is stoping from thick to thin,the length of each extraction unit from G1 to G7 is 36,34,34,52,70,70,70 m, side wall and end wall reserve 2-4 m thick pillar, alternating backfill after mining.

关 键 词：盘区隔离矿柱 回采顺序 λ模糊测度 动态综合评价 

分 类 号：TD862.1[矿业工程—金属矿开采]