基于开采环境再造深孔诱导崩矿方案优化研究  

Study on Optimizing the Deep-hole Induction Caving Scheme Based on the Reconstructed Mining Environment

作　　者：周科平[1] 朱和玲[1] 肖雄[1] 刘俊 董国庆 

机构地区：[1]中南大学资源与安全工程学院湖南省深部金属矿开发与灾害控制重点实验室,湖南长沙410083 [2]新鑫矿业股份有限公司喀拉通克铜镍矿,新疆富蕴836107

出　　处：《湖南科技大学学报（自然科学版）》2008年第3期5-9,共5页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金："十一五"国家科技支撑计划(2006BAB02A02);国家自然科学基金资助项目(50490274);国家教育部博士点基金(20050533035);教育部新世纪优秀人才支持计划

摘　　要：针对新疆喀拉通克铜镍矿高价值软破矿体的特征,提出了开采环境再造深孔诱导崩矿采矿技术,并主要从维护采场稳定性和保证矿石合格块度率的角度,对崩矿方案进行优化研究.首先,运用FLAC3D软件对侧向挤压崩矿和水平分层崩矿过程进行数值模拟,分别从位移场和应力场的分布和变化来分析不同方案对采场结构稳定性的影响;其次,分析了节理裂隙分布对原始矿体的切割作用,以及爆破挤压作用对崩落块度的影响.研究结果表明,侧向挤压崩矿更有利于维护采场结构的稳定,引导节理裂隙对矿体的合理切割,并能充分发挥挤压效应,提高崩落矿石块度的合格率.图4,表1,参14.According to the characteristics of complex high-value deposit in XinJiang province, the reconstructed mining environment and deep-hole induction caving method was proposed in the first time, and then the caving schemes were optimized based on the stope＇s stability and ore＇s fragments size. Firstly, the caving process in the side-extruding scheme and horizontal-slice scheme were simulated by FLAC^3D, and the influence on stope＇s stability was evaluated by analyzing the distribution and variation of both stress and displacement fields, respectively. Secondly, the cutting actions by cracks and joints, as well as the squeezing actions by blasting on the original ore were analyzed. Final/y, the Side-extruding caving scheme was considered to be the preferred plan, and the reasons as follow： （1） more advantageous to maintenance stope＇s structure stable; （2） guiding joints to cut the ore body reasonably; （3） can utilize the squeezing effect fully and improve the caving quality.

关 键 词：开采环境再造 崩矿方案优化 数值模拟 稳定性 矿石块度 

分 类 号：TD214.2[矿业工程—矿井建设]