【作者】 李庶林； 尹贤刚； 李爱兵；

【Author】 LI Shu-lin, YIN Xian-gang, LIAi-bin (School of Architectural and Civil Engineering, Xiamen University, Xiamen 361005, China; Changsha Institute of Mining Research, Changsha 410012, China)

【机构】 厦门大学建筑与土木工程学院； 长沙矿山研究院；

【摘要】 深部高应力矿床开采爆破后的采场余震可用来评价采场围岩的稳定性,余震发震的时间、发震频度等是衡量采场围岩稳定性的重要指标。采用16通道全数字型微震监测系统对凡口铅锌矿深部采场大爆破后的余震事件进行实时和空间定位监测,确定余震事件发生的空间位置和发生时间。监测表明,采场大爆破有时不会诱发余震, 有时会诱发余震,且这些余震发生在大爆破后的数分钟之内,30分钟之后没有余震发生,说明采场围岩体的稳定性较好。更多还原

【Abstract】 Aftershocks of large blasts in mining stopes can be used to evaluate the stability of country rockmass around deep stopes with high slress. Occurring times and ratios of aftershocks are significanl indices to judge the stability of country rockmass. Real-time and spatial location monitoring of aftershocks of large blasts by a 16-channel full-digital microseisimic monitoring system at deep mining slopes at Fankou Lead-zinc mine are carried out to determine the occurring limes and the positions of the aftershocks. The monitoring resulls show that sometimes there are no aftershocks and sometimes aftershocks happen after large blasls. All the aftershocks, which occur after large blasls, lake place within several minutes. If no evenls occur in 30 minutes after large blasls, it means the surrounding rockmass has a good slabilily.更多还原