摘要
深部矿体地质条件复杂,在应用机械化上向水平分层进路充填法开采时,合理选取进路断面尺寸对于矿山安全生产具有重要的现实意义。以云南某铅锌矿深部中段首采分段为工程实例,综合考虑经济、安全、劳动强度和环境4个指标,利用层次分析法初步筛选开采进路断面尺寸,其后针对初选结果,利用FLAC^(3D)数值分析软件模拟深部中段首采分段4个分层的回采,以优选适于该矿深部矿体机械化上向水平分层进路充填法的进路断面尺寸,结果表明:3 m×3 m和5 m×5 m的进路断面尺寸在层次分析法中的优劣排序靠后,故先行淘汰;通过首采分段周边矿岩最小主应力、塑性区和垂直位移的综合对比发现,3.5 m×3.5 m和4 m×4 m的进路断面尺寸可较好地适应该矿深部矿体机械化上向水平分层进路充填法开采。层次分析法初选和数值模拟优选相结合的方法,可为同类型矿山进路断面尺寸优选提供借鉴。
As the geological conditions of the deep ore-body are complex.The reasonable selection of the size of drift section is of great practical significance to the safe production of the mine when applying the mechanized upward horizontal slicing and drift filling mining method.Taking the initial mining section of the deep level of the a lead-zinc mine in Yunnan as an engineering example,with overall consideration of the four factors:economy,safety,labor intensity and environment,the preliminary selection of mining drift size was carried out using the analytic hierarchy process.Based on the preliminary selection results,the mining drift size suitable for the mechanized upward horizontal slicing and drift filling mining method in the deep ore-body can be optimized by using the numerical software FLAC^(3D) to simulate mining the four layers of the initial mining section at the deep mining level.The results show that the mining drift size of 3 m×3 m and 5 m×5 m were eliminated because of their poor ranks in the analytic hierarchy process.The mining drift size of 3.5 m×3.5 m and 4 m×4 m are amenable to the mechanized upward horizontal slicing and drift filling mining of the deep ore-body in the mine by the comprehensive comparison of the minimum principal stress,plastic zone and vertical displacement of the ores and rocks around the initial mining section.The preliminary selection by hierarchical analysis combining optimization with numerical simulation can be provided as reference for the drift size optimization of the similar mines.
作者
杨海辉
杨灵敏
张晶
崔鹏
杨志
Yang Haihui;Yang Lingmin;Zhang Jing;Cui Peng;Yang Zhi(Yunnan Chihong Zn&Ge Co.,Ltd.,Qujing Yunnan 655011,China;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming Yunnan 650093,China)
出处
《化工矿物与加工》
CAS
2023年第4期9-15,共7页
Industrial Minerals & Processing
基金
国家自然科学基金(51864023,52264019)。
关键词
深部矿体
上向水平分层进路充填法
进路断面尺寸
层次分析法
数值模拟
deep ore-body
upward horizontal slicing and drift filling mining method
size of drift section
analytic hierarchy process
numerical simulation
作者简介
杨海辉(1988-),男,四川绵阳人,工程师,从事金属矿山安全生产与采矿技术管理工作,E-mail:420072307@qq.com;通信作者:张晶(1990-),男,湖北荆州人,博士,讲师,从事岩体力学与矿山灾害防控等方面的研究,E-mail:yuanzhongni33@163.com。
