| 自然崩落法顶板稳定性监测分析与预警研究* |
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| 引用本文： | 刘强,魏银鸿,王平,彭张,蔡永顺.自然崩落法顶板稳定性监测分析与预警研究*[J].中国安全生产科学技术,2021,17(8):91-96. |
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| 作者姓名： | 刘强 魏银鸿 王平 彭张 蔡永顺 |
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| 作者单位： | （1.矿冶科技集团有限公司，北京 102628；2.中国-南非矿产资源开发利用联合研究中心，北京 102628;3.国家金属矿绿色开采国际联合研究中心，北京 102628；4.云南迪庆有色金属有限责任公司，云南 香格里拉 674400） |
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| 基金项目： | * 基金项目: 国家重点研发计划项目(2020YFE0202800) |
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| 摘 要： | 为有效预警自然崩落法开采过程中顶板大面积崩落，确定顶板失稳预警期，基于微震、时域反射、钻孔电视等综合监测数据，研究岩体失稳过程点监测数据及微震活动性参数变化特征。结果表明:基于多源参数可有效预警顶板失稳事件，但点监测无法兼顾整个采区顶板，大尺度区域性监测主要依靠微震监测系统；根据顶板失稳事件前后b值、累积视体积、能量指数、施密特数等微震活动性参数变化特征，确定普朗铜矿顶板失稳预警期为24 d。研究结果可为后续整个采区其他区域顶板稳定性监测预警工作提供借鉴。
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| 关 键 词： | 顶板失稳 微震监测 活动性参数 预警期 |
Study on roof stability monitoring analysis and early warning by natural caving method |
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| LIU Qiang,WEI Yinhong,WANG Ping,PENG Zhang,CAI Yongshun.Study on roof stability monitoring analysis and early warning by natural caving method[J].Journal of Safety Science and Technology,2021,17(8):91-96. |
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| Authors: | LIU Qiang WEI Yinhong WANG Ping PENG Zhang CAI Yongshun |
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| Affiliation: | (1.BGRIMM Technology Group,Beijing 102628,China;2.China-South Africa Joint Research Center for Development and Utilization on Mineral Resources,Beijing 102628,China;3.National Centre for International Research on Green Metal Mining,Beijing 102628,China;4.Yunnan Diqing Nonferrous Metal Co.,Ltd.,Shangri-La Yunnan 674400,China) |
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| Abstract: | For the effective monitoring and early warning of large area roof sudden caving in the process of natural caving mining,and establishing the early warning period of roof instability,based on the comprehensive monitoring data of microseismic,time-domain reflection and borehole TV,the point monitoring data and the variation characteristics of microseismic activity parameters in the process of rock instability were studied.The results showed that the multi-source parameters were effective in the early warning of roof instability events,but the point monitoring could not take into account the whole roof of mining area,and the large-scale regional monitoring mainly relied on the microseismic monitoring system.According to the variation characteristics of microseismic activity parameters,such as b value,cumulative apparent volume,energy index and Schmidt number before and after the roof instability event,it was determined that the early warning period of roof instability for Pulang copper mine was 24 days.The research results can provide reference for the follow-up monitoring and early warning of roof stability in other areas of the entire mining area. |
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| Keywords: | roof instability microseismic monitoring activity parameter early warning period |
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