基于Voronoi图和FLAC3D房柱法矿柱回采可行性评价  

Feasibility Evaluation of Pillar Mining Based on Voronoi Diagram and FLAC3D Room-Pillar Mining Method

作　　者：李湘洋 刘海科 杨福斗 温世平 李恒 曹帅[1,2] LI Xiangyang;LIU Haike;YANG Fudou;WEN Shiping;LI Heng;CAO Shuai(Civil and Resource Engineering School,University of Science and Technology Bejing,Bejing 100083,China;State Key Laboratory of High Efficient Mining and Safety of Metal Mines,Ministry of Education,University of Science and Technology Beijing,Beijing 100083,China;Zjin Tungsten Industry Group Co,Ltd,Nanwenhe Tungsten Mine,Wenshan,Yunnan 8161003,China)

机构地区：[1]北京科技大学土木与资源工程学院,北京100083 [2]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [3]文山麻栗坡紫金钨业集团有限公司南温河钨矿,云南文山市816100

出　　处：《矿业研究与开发》2020年第2期8-12,共5页Mining Research and Development

基　　金：国家自然科学青年基金项目(51804017);博士后基金面上项目(2018M631341)

摘　　要：针对南温河钨矿矿柱安全回采问题,采用理论分析和数值模拟方法,对该矿的矿柱回采试验采场采空区稳定性进行分析。通过Voronoi图法和矿柱强度经验公式得到矿柱安全系数,以评价矿柱稳定性;在理论分析基础上,利用FLAC3D数值模拟软件对矿柱置换回采前、后的采空区稳定性进行评价。研究表明:试验采场内除矿柱K2、K6和K10外,其余矿柱均稳定性良好;人工混凝土假柱能够满足试验采场矿柱安全回采要求。Aiming at the safe mining problem of pillar in Nanwenhe tungsten mine,the goaf stability of trial stope for pillar mining was analyzed by theoretical analysis and numerical simulation.Through Voronoi diagram and empirical formula of pillar strength,the safety factor of pillar was obtained to evaluate the pillar stability.Based on the theoretical analysis,the goaf stability before and after pillar mining was evaluated by FLAC3D numerical simulation software.The results showed that all the pillars except K2,K6 and K10 in the trial stope were stable,and the artificial concrete false pillars can meet the requirements of safe mining of pillars in the trial stope.

关 键 词：Voronoi图法 矿柱强度 数值模拟 稳定性评价 

分 类 号：TD853.32[矿业工程—金属矿开采]