摘要
为研究金属矿山采矿活动中地应力、微震活动与地压演化的关系,采用高精度微震监测系统对矿山开采过程中微震活动的时空分布特征进行分析,通过对同一时间轴下的微震的活动性、微震累积视体、能量指数等参数的变化特征研究,分析了矿山采矿过程微震活动的时空演化规律及矩震级分布,揭示了矿山地压演化规律及趋势。并成功地在内蒙古某金矿工程采矿中应用,研究结果验证了高精度微震监测系统用于矿山地压演化规律分析的可行性,可为微震监测系统在此类工程的应用提供参考。
In order to study the relationship between ground stress,microseismic activity and ground pressure evolution in mining activities of metal mines,the time-space distribution characteristics of microseismic activities were analyzed by the high-precision microseismic monitoring system.Based on the study of microseismic activity,microseismic cumulative apparent volume,energy index and other parameters under the same time axis,the temporal and spatial evolution law of microseismic activity were analyzed,the distribution of moment magnitude was discussed,and the evolution law and trend of mine ground pressure were revealed.It was successfully applied in a gold mine project in Inner Mongolia.The research results verified the feasibility of using high-precision microseismic monitoring system to analyze the evolution law of mine ground pressure,which can provide reference for the application of microseismic monitoring system in such projects.
作者
王虎
师海
付搏涛
魏杰
WANG Hu;SHI Hai;FU Bo-tao;WEI Jie(Research Institute of Mine Safety Technology,China Academy of Safety Science and Technology,Beijing 100012,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;School of Engineering and Technology,China University of Geosciences in Beijing,Beijing 100083,China)
出处
《科学技术与工程》
北大核心
2020年第28期11520-11525,共6页
Science Technology and Engineering
基金
国家自然科学基金(41907260)
中国安科院基础科研项目(2019JBKY10)
中国博士后科学基金(2019M650698)
国家重点研发计划(2017YFC0804602,2017YFC0404802)。
关键词
微震监测
金属矿山
时空分布
地压演化
矩震级
microseismic monitoring
metal mine
spatio-temporal distribution
ground pressure evolution
moment magnitude
