复杂应力环境下胶结充填采矿法进路开采顺序优化  

Optimization of Sequence of Drift Stoping by Cemented Backfilling Under Complex Stress Conditions

作　　者：李彦龙[1] 余龙哲 陈仲杰[1,3] 郁标 王文杰 LI Yanlong;YU Longzhe;CHEN Zhongjie;YU Biao;WANG Wenjie(No.2 Mine of Jinchuan Group Co.,Ltd.,Jinchang 737100,Gansu,China;School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]金川集团股份有限公司二矿区,甘肃金昌737100 [2]武汉科技大学资源与环境工程学院,湖北武汉430081 [3]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《矿冶工程》2024年第4期144-149,共6页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51974206)。

摘　　要：针对复杂应力环境下胶结充填采矿法进路开采顺序合理性问题,以金川二矿区为例,借助数值仿真软件构建三维数值模型,对不同进路开采顺序下应力场、位移场及塑性破坏区进行分析;在此基础上,采用组合赋权与模糊综合评价相结合的方法对进路开采顺序优化,并开展现场工业试验。结果表明:不同走向进路开采顺序和进路开采空间顺序均对开采区域最大主应力、最大拉应力、垂直位移、塑性破坏区以及临近下一采场最大主应力、垂直位移有一定程度影响;采用下盘至上盘、先开采垂直矿体走向进路的开采顺序时,采场整体开采安全性高,且现场试验效果良好。研究结果可为复杂应力环境下胶结充填采矿法进路开采顺序设计与优化提供理论依据。For discussing rational sequence of drift stoping by cemented backfilling under complex stress conditions,with No.2 mine of Jinchuan Group as an example,a three-dimensional numerical model was constructed with a numerical simulation software,and was then used to analyze the stress field,displacement field and plastic failure zone in drift stoping with different sequences.On this basis,the drift stoping sequence,after optimization by adopting a combined weighting and fuzzy comprehensive evaluation,was then adopted in an on-site industrial experiment.The results show that both mining sequence by overhand or underhand stoping and drift stoping with different spatial sequence can bring a certain influence to the maximum principal stress,maximum tensile stress,vertical displacement,plastic failure zone,as well as the maximum principal stress and vertical displacement in the next stope nearby;mining sequence of underhand stoping followed by overhand stoping,or firstly drift stoping of vertical ore mass,can make the overall mining with higher safety.The on-site experiment with such mining sequence presents better effect.It is concluded that this research can provide some reference in the design and optimization of mining sequence for drift stoping by cemented backfilling under complex stress conditions.

关 键 词：复杂应力环境 胶结充填采矿法 下向分层水平进路采矿法 进路开采顺序 采场应力 数值分析 

分 类 号：TD853[矿业工程—金属矿开采]