基于指标满意度的采场结构参数敏感性数值模拟研究  

Numerical Simulation on Sensitivity of Stope Structure Parameters Based on Satisfaction Index

作　　者：赵兴东[1] 李怀宾 张姝婧[1] 杨晓明[1] Zhao Xingdong;Li Huaibin;Zhang Shujing;Yang Xiaoming(Research Center of Mine and Ground Pressure Control,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学采矿地压与控制研究中心

出　　处：《金属矿山》2019年第12期21-25,共5页Metal Mine

基　　金：NSFC-山东联合基金项目（编号：U1806208）;国家重点研发计划项目（编号：2016YFC0600803,2018YFC0604604,2018YFC0604401）

摘　　要：为了研究采场结构参数敏感性的问题,提出一种基于指标满意度的多指标综合评价模型,以青龙沟金矿为工程背景,基于矿体厚度变化大的特点,选取采场长度和宽度2个因素,建立12个数值模型方案,选取上、下盘超挖深度和顶、底板位移量进行基于指标满意度的多指标综合评价及敏感性分析。研究结果表明:采场长度和宽度对采场稳定性的敏感度分别为0.137和0.255,采场宽度对采场稳定性较敏感,随着采场长度和宽度增加,综合满意度逐渐降低,采场也越不稳定。但当矿体厚度较大时,采场应垂直于矿体走向布置,这样可以有效控制采场宽度对采场稳定性的影响。In order to study the sensitivity of stope structural parameters,a multi-index comprehensive evaluation model based on satisfaction index is proposed. Taking Qinglonggou Gold Mine as the engineering background,and based on the characteristics of great variation of orebody thickness,two factors of stope length and width are selected to establish 12 numerical models. The multi-index comprehensive evaluation and sensitivity analysis were carried out with indexes of the overbreak depths of upper and lower wall,the displacement of roof and bottom based on satisfaction index. The results show that the sensitivity of stope length and width to stope stability is 0.137 and 0.255,respectively. Stope width is the most sensitive factor which influence the stope stability. With the increase of stope length and width,the comprehensive satisfaction index gradually decreases,and the stope becomes more unstable. However,when the thickness of the ore body becomes large,the stope should be arranged perpendicularly to the strike of ore body,which can effectively control the influence of the stope width on the stope stability.

关 键 词：采场结构参数 多指标 满意度 数值模拟 敏感性 

分 类 号：TD853[矿业工程—金属矿开采]