基于微震监测的特大型矿柱破裂机理及安全系数分析  

Analysis on the Rupture Mechanism and Safety Factors of Large Pillar Based on Microseismic Monitoring

作　　者：王培武 王贤伟 杨顺[2] 

机构地区：[1]万城商务东升庙有限责任公司,内蒙古巴彦淖尔市015000 [2]长沙矿山研究院有限责任公司,湖南长沙410012

出　　处：《矿业研究与开发》2016年第10期85-89,共5页Mining Research and Development

摘　　要：根据微震监测的单通道触发数对矿柱开裂进行了成功预警,现场勘查表明某矿山7线矿柱沿主应力方向出现了一条长约60m的大裂缝,证实了微震监测预警的正确性。针对矿柱开裂情况,对井下采矿生产进行了有效的调整,并加快矿柱两边空区的充填作业,缓解了矿柱的承压现状,定量分析表明随着充填高度的增加,矿柱的安全系数逐渐增大,对于指导矿山安全生产取得了良好效果。According to the trigger number of single channel in microseismic monitoring, the pillar cracking successfully achieved early warning in a mine. On-site survey indicated that the 7th line pillar along the main force direction appeared a long about 60 m high cracking, which confirmed the correctness of the microseismic monitoring and early warning. Aimed at the situation of pillar cracking, underground mine production was effectively adjusted, the filling opera- tion of the goals at both sides of pillar was accelerated, and the pressure status of the pillar was reduced. Quantitative analysis indicated that with the increase of the filling height, safety factors of the pillar increased gradually, which was a guidance for the mine＇s safety production to obtain a good effect.

关 键 词：微震监测 矿柱破坏预警 采空区充填 安全系数 

分 类 号：TD853.391[矿业工程—金属矿开采]