摘要
千米井矿区深部开采过程中,易发生冒顶、片帮等地压灾害,对后续采矿的进度与安全影响较大。针对哈图金矿千米井矿区,通过微震事件时空演化规律,分析了围岩变形特征,划分出了地压活动较强的重点区域。通过微震事件累积视体积—能量指数变化规律分析岩爆和大尺度岩体破裂的预警前兆信息,根据预警前兆信息及时采取加强支护等保护措施,取得了良好的效果。
The roof falling,spalling and other ground pressure disasters are prone to occur in the process of deep mining in kilometer well mining area,which affect the progress and safety of subsequent mining.Aiming at Qianmijing mining area of Hatu gold mine,the deformation characteristic of surrounding rock was analyzed by the spatiotemporal evolution of microseismic events.The key areas with strong ground pressure activities were divided.The warning precursor information of rockburst and large-scale rock mass fracture was analyzed based on the variation of cumulative apparent volume and energy index of microseismic events.Some protective measures such as strengthening support were taken in time according to the warning precursor information,and good results were achieved.
作者
蔡永顺
关孝忠
王海文
吴亚飞
石峰
CAI Yong-shun;GUAN Xiao-zhong;WANG Hai-wen;WU Ya-fei;SHI Feng(BGRIMM Technology Group,Beijing 100160,China;National Center for International Joint Research on Green Metal Mining,Beijing 102628,China;China—South Africa Joint Research Center for Exploitation and Utilization of Mineral Resources,Beijing 102628,China;Western Region Gold Co.Ltd.,Urumchi,830001,China;Western Gold Karamay Hatu Gold Mine Co.Ltd.,Karamay 834000,Xinjiang,China)
出处
《矿冶》
CAS
2021年第5期1-5,共5页
Mining And Metallurgy
基金
国家重点研发计划项目(2017YFC0602904)。
关键词
微震监测
千米井
采场地压
预警前兆
microseismic monitoring
kilometer well
stope ground pressure
warning precursor
