大宝山采空区稳定性微震监测方案及现场应用  

Stability Microseismic Monitoring Scheme and Field Application in Dabaoshan Goaf

作　　者：彭嘉琪 彭兴根 PENG Jiaqi;PENG Xingen(Guangdong Dabaoshan Mining Co.,Ltd.,Shaoguan 512100,China)

机构地区：[1]广东省大宝山矿业有限公司,广东韶关512100

出　　处：《湖南有色金属》2024年第2期64-68,共5页Hunan Nonferrous Metals

摘　　要：采空区的安全稳定关于矿山的安全生产,必须对其进行高精度定位和实时监测。文章基于大宝山39线~51线之间的采空区群的实时监控结果,对微震事件震源进行高精度空间定位和监测数据的科学分析,实现采空区失稳的提前预警。现场应用结果表明:采用b值与事件数确定的预警期过早,而发生期较贴近采空区垮塌时间,而lgEI~∑VA与lgSCS~∑VA确定的预警期和发生期均与采空区垮塌时间较为接近。综合分析确定2014年10月1日大宝山矿采空区大塌方预警期为:9月22日~9月25日,矿山可在9月26日之前进行响应,以规避风险。The safety and stability of goaf in relation to the safety of mine production,it is necessary to crry out high-precision positioning and real-time monitoring.In this paper,based on the real-time monitoring results of the gob group between line 39 and 51 of Daboshan Mountain,high-precision spatial positioning and scientific analysis of the monitoring data of the source of the microseismic event are carried out to realize the early warning of the gob instability.The field application results show that the early warning period determined by b value and event mumber is too early,and the occurrence period is closer to the collapse time of goaf,while the early warning period and occurrence period determined by lgEI-ΣV_(A)and lgSC_(s)-ΣV_(A)are close to the collapse time of goaf.The comprehensive analysis determined that the warning period of big cave-in in the goaf of Dabaoshan Mine on October 1,2014 is from September 22 to September 25,and the mine could respond before September 26 to avoid risks.

关 键 词：采空区 微震监测 稳定性 现场应用 

分 类 号：TD77[矿业工程—矿井通风与安全]