深部底柱矿体安全回采实践  

Safe Mining Practise of Deep Bottom Column Ore Bodies

作　　者：郑向党[1] 孟福杰[1] 张琳琳[1] 李杰[1] 

机构地区：[1]金川集团股份有限公司

出　　处：《现代矿业》2013年第5期11-13,47,共4页Modern Mining

摘　　要：金川二矿区是一个多金属共生的大型坑采矿山,随着开采深度逐渐下降,1 150 m中段厚度递减,进入了深部底柱回采阶段。底柱存在一系列不安全因素及出现过高的应力集中和能量积聚现象,在底柱回收过程中存在突发性的整体灾变失稳的可能性,使之回采难度增加。通过总结深部底柱难采矿体安全回采实践经验,可为后续盘区深部底柱难采矿体安全回采提供可借鉴管理经验及技术支撑。No. 2 mining area of Jinchuan is a polymetallic intergrowth Large pit-mining mountain, with mining depth declined gradually, 1 150 m depth of middle part descending, entered into deep bottom column recovery phase. A series of unsafe factors existed and phenomenon like overhigh stress concentra- tion and energy accumulation appeared of bottom column, possibility of sudden overall disaster then insta- bility caused existing in bottom column recovery process, made the difficulty of stoping increase. Through introduction of success experience and countermeasure of safe mining and practice of deep bottom column difficult mining ore bodies, could provides management experience and technical support for reference for safe mining of deep bottom column difficult mining ore bodies of follow-up panel.

关 键 词：深部底柱 难采矿体 安全回采 技术支撑 

分 类 号：TD861.1[矿业工程—金属矿开采]