矿柱稳定性关键影响因素敏感性分析  

Sensitivity Analysis on Key Influence Factors of Pillars Stability

作　　者：王少林 黄敏 方偏桃 WANG Shaolin;HUANG Min;FANG Piantao(Changsha Institute of Mining Research Co.,Ltd,Changsha,Hunan 410012,China;State Key Laboratoriy of Metal Mine Safety Technology,Changsha,Hunan 410012,China;School of Resources&Environment Engineering,Jiangxi University of Science and Technology,Ganzhou,Jiangsu 341000,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]江西理工大学资源与环境工程学院,江西赣州市341000

出　　处：《矿业研究与开发》2020年第8期31-35,共5页Mining Research and Development

基　　金：湖南省重大科技专项(2011FJ1003);973计划课题(2010CB735507);国家安全生产监督管理总局安全生产重大事故防治技术科技项目(hunan-0010-2014AQ);湖南省安全生产财政专项资金项目资助.

摘　　要：湖南省某铅锌矿区用空场采矿法开采了约40a,形成了数量巨大、范围广泛、相互重叠的采空区群。为了对采空区矿柱稳定性进行深入研究,综合考虑矿柱稳定性的关键影响因素,如矿柱埋藏深度、矿柱宽度、矿柱面积、矿柱承载岩柱横截面积及矿柱高度,基于普氏理论对该矿区1365根矿柱的安全系数进行计算与分析,并借助正交试验及正交极差分析对矿柱关键影响因素进行敏感性分析。结果表明,该矿区矿柱安全系数关键影响因素的主次顺序依次为矿柱埋藏深度、矿柱横截面积、矿柱承载岩柱横截面积及矿柱高度,影响最显著的因素为矿柱埋藏深度,其次为矿柱横截面积。A lead-zinc mine in Hunan Province has experienced about 40 years of underground mining mainly by open stope method,forming a large number and a wide range of overlapping goaf groups.In order to deeply study the pillars stability in goaf,and comprehensively considering the key influence factors,such as the burial depth,width,area,bearing cross-sectional area and height of pillars,the safety factors of 1365 pillars in the lead-zinc mine area were calculated and analyzed based on the PU’s theory.And the sensitivity analysis on key influence factors of pillars stability was carried out by orthogonal experiment and orthogonal range analysis.The results show that the order of key influence factors from large to small is burial depth,cross-sectional area,rock pillar bearing cross-sectional area and height of pillars.The most significant factor is the burial depth of pillars,followed by the cross-sectional area of pillars.

关 键 词：矿柱稳定性 普氏理论 矿柱安全系数 正交试验 敏感性分析 

分 类 号：TD853[矿业工程—金属矿开采]