某磷矿深部采场回采稳定性分析研究  

Stability Analysis of Deep Stope Mining in a Phosphate Mine

作　　者：陈志强 王红心 杨莹 CHEN Zhiqiang;WANG Hongxin;YANG Ying(Beijing JCHX Mine Technology Research Institute Co.,Ltd.,Beijing 101500,China)

机构地区：[1]北京金诚信矿山技术研究院有限公司,北京101500

出　　处：《中国钼业》2023年第2期27-32,共6页China Molybdenum Industry

基　　金：中国博士后科学基金资助项目(编号:2021M701516)。

摘　　要：针对某磷矿深部矿体回采过程中采空场围岩稳定性状况,采用椭圆形巷道围岩的弹性力学理论对采场结构参数进行分析计算,同时采用FLAC3D有限差分软件对该采场结构参数下采场两步骤开挖充填过程中围岩应力、位移及塑性区变化状况进行了分析,研究结果表明,当采场回采宽度为10 m时,采场回采长度宜为45.4~48.9 m。In view of the stability of the surrounding rock of the stope in the mining process of a deep orebody in a phosphate mine,the elastic mechanics theory of the surrounding rock of the elliptical roadway is used to analyze and calculate the structural parameters of the stope.At the same time,FLAC3D finite difference software is used to analyze the stress,displacement and plastic zone of the surrounding rock during the two-step excavation and filling process of the stope under the structural parameters of the stope.The results show that when the mining width of the stope is 10 m,the mining length of the stope should be 45.4~48.9 m.

关 键 词：深部采场 弹性力学 FLAC3D 采场结构参数 稳定性 

分 类 号：TD853[矿业工程—金属矿开采]