摘要
根据新田岭钨矿区211号矿体开采技术条件,对该厚大矿体拟采用分段空场嗣后充填法回采。为确定合理的采场结构参数,确保矿山安全、高效生产,采用FLAC3D三维有限差分软件对9种不同采场结构参数进行了数值模拟计算,分析不同矿房、矿柱尺寸条件下采场稳定性、围岩应力、位移的变化规律,结果表明:矿房和矿柱宽度是影响采场稳定性的重要因素;随着矿房宽度的增大,采场最大拉应力和最大压应力相应增大;随着矿柱宽度的增大,采场最大拉应力和最大压应力相应的减小。
According to the mining conditions of No. 211 oreboy in Xintianling Wolfram Mine,the thick and massive orebody is to be mined by sublevel open-stope backfilling method. In order to determine the appropriate stope structural parameters and ensure the mine safety and the efficient production, 9 kinds of different stope structural parameters are calculated with numerical simula- tion by FLACaI^（three-dimensional finite difference analysis soft- ware） to analyze the impact of different rooms and pillar size for the stope stability and surrounding rock stress and displacement variation rules. The research results show that the room and pil- lar width is an important factor, which influences the stability of stope. With the greater room width, the maximum tensile stress and the maximum compressive stress in the stope are increased and with the greater pillar width, the maximum tensile stress and the maximum compressive stress in the stope are decreased.
出处
《化工矿物与加工》
CAS
北大核心
2015年第5期27-30,44,共5页
Industrial Minerals & Processing
关键词
分段空场嗣后充填法
采场结构参数
数值模拟
FLAC3D
sublevel open-stope backfilling method
stope structure parameters
numerical simulation
FLAC3D
