龙头山矿段采场结构参数及地压控制数值模拟研究  

Numerical simulation of stope structure parameters and ground pressure control in Longtoushan mine

作　　者：吴雅菡 童雄[1,2,3] 张明天 侯克鹏 李耀楠[1,4] 苗雨心 WU Yahan;TONG Xiong;ZHANG Mingtian;HOU Kepeng;LI Yaonan;MIAO Yuxin(School of Land and Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Province Engineering Research Center for Reutilization of Metal Tailings Resources,Kunming 650093,China;Provincial and State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming 650093,China;Yunnan Key Laboratory of Sino-German Blue Mining and Utilization of Special Underground Space,Kunming 650093,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]云南省金属矿尾矿资源二次利用工程研究中心,昆明650093 [3]省部共建复杂有色金属资源清洁利用国家重点实验室,昆明650093 [4]云南省中-德蓝色矿山与特殊地下空间开发利用重点实验室,昆明650093

出　　处：《有色金属（矿山部分）》2020年第4期19-28,共10页NONFERROUS METALS(Mining Section）

基　　金：国家自然科学基金资助项目(51964023)。

摘　　要：矿山地下开采过程中,顶板控制对采场地压控制有着直接的影响,分析影响采场围岩稳定性关键因素及破坏机理十分必要。为保证龙头山矿段采场安全、高效开采,运用FLAC3D数值模拟软件对该矿段采场结构进行模拟研究,分别模拟研究了该矿段在空场和切顶条件下的采场结构参数。结果表明:龙头山矿段在空场条件下开采,安全隐患较大,顶板容易发生冒落,形成冲击地压。同时提出合理的采场结构参数与地压控制措施,研究成果为矿山开采选择合理的采场结构参数提供依据。During the underground mining process,roof control has a direct impact on the pressure control of the mining site,therefore,it is necessary to analyze the key factors affecting the stability of the surrounding rock of the mining site and the failure mechanism.In order to ensure the safe and efficient mining in Longtoushan mine section,FLAC3D numerical simulation software was used to simulate the mining structure of the mine section,the structural parameters of the stope under the conditions of open stope and roof cutting were simulated and studied respectively.The results indicated that the Longtoushan mine was mined under open field conditions,which posed a large safety hazard,and the roof was prone to fall,forming an impact ground pressure.Meanwhile,reasonable stope structure parameters and ground pressure control measures were proposed,the research results provided a basis for selecting reasonable stope structure parameters for mining.

关 键 词：三维有限元 顶板控制 FLAC^3D数值模拟 贫化损失 

分 类 号：TD32[矿业工程—矿井建设]