基于不同采矿方法磷矿开采围岩应力演化规律研究  

Study on the rock stress evolution regularity of different phosphorous orebody mining method

作　　者：李耀基[1] 齐消寒 姚俊伟[2] 

机构地区：[1]云南磷化集团有限公司,云南昆明650600 [2]重庆大学资源及环境科学学院,重庆400044

出　　处：《中国矿山工程》2013年第6期63-66,共4页China Mine Engineering

基　　金：国家科技支撑计划项目(2011BAB08B01;2013BAB07B06)

摘　　要：随着露天磷矿开采的结束和浅部矿产资源的逐渐枯竭,晋宁磷矿2号矿坑即将转入地下开采。为确保露天开采平稳过渡到地下开采,根据矿坑的地质条件和开采技术条件,初步设计上盘Ⅰ级品磷矿采用房柱或崩落法进行开采。运用FLAC^(3D)数值模拟方法对采用房柱法与崩落法采矿时采场围岩应力变化规律和覆岩变形破坏规律等进行研究,对两种采矿方法在磷矿体地下开采时的优劣进行比较,从而指导工程实践中对采矿方法的选择与优化。With the end of the open pit mining of phosphorous ore and the gradual depletion of shallow mineral resources,pit 2 of Jinning phosphorous mine will transfer from open-pit to underground mining.To ensure the successful transfer,according to the geological and mining conditions of the pit,room and pillar mining method and caving mining method were chosen in the primary design for mining the hanging wall first-class grade phosphorous ore,and the stope rock stress behavior,the failure law of overlying strata were studied by using the numerical simulation of FLAC.The advantages and disadvantages of two mining methods are compared.It can provide guidance for mining method selection in mining project.

关 键 词：磷矿体 采矿方法 FLAC 数值模拟 

分 类 号：TD871.3[矿业工程—非金属矿开采]