基于微震监测技术的岩爆特征研究  

Study on Characteristicsof Rock Burst Based on Micro-Seismic Monitoring Technology

作　　者：李立民 唐烈先[2] 魏军政 赵力 王家明 李玉波 LI Limin;TANG Liexian;WEI Junzheng;ZHAO Li;WANG Jiaming;LI Yubo(Shaanxi Railway and Underground Traffic Engineering Key Laboratory(FSDI),Xi’an 710043,China;School of Mining Engineering,University of Science and Technology Liaoning,Anshan 114051,China;Hanjiang⁃to⁃Weihe River Valley Water Diversion Project Construction Co.,Ltd.,Xi’an 710010,China)

机构地区：[1]陕西省铁道及地下交通工程重点实验室(中铁一院),陕西西安710043 [2]辽宁科技大学矿业学院,辽宁鞍山114051 [3]陕西省引汉济渭工程建设有限公司,陕西西安710010

出　　处：《人民黄河》2020年第2期77-80,108,共5页Yellow River

基　　金：国家重点研发计划项目(2016YFC0401804);2013年陕西省科技统筹创新工程计划项目(2013KTZB03-01-01);陕西省引汉济渭工程建设有限公司科研项目(引汉建函[2014]93号)

摘　　要：秦岭输水隧洞越岭段岩石掘进机法施工过程中多次出现岩爆风险,对施工人员和设备安全产生了严重威胁。采用微震监测技术进行岩爆预测预报,通过分析微震事件分布特征、频次特征、震级特征等,建立了基于能量指标的岩爆判别方法,工程实例表明整体准确预测率超过80%。结果表明,深埋硬岩隧洞中岩爆风险是完全可以预测的,对于中等及以上岩爆预测效果更加显著,根据预测结果采取相应的预防措施,可在一定程度上降低岩爆的风险。The risk of rock burst appeared repeatedly and had posed a serious threat to personnel and equipment safety in the tunnel boring machine(TBM) construction process of the summit section of Qinling water conveyance tunnel. In this paper microseismic monitoring technology was used for prediction of rock burst. Through analyzing the distribution, frequency and moment magnitude characteristics of microseismic events, the method to judge rock burst was established based on energy index. And in the engineering project the overall accurate prediction rate was more than 80%. The results show that rock burst is predictable in the deep and hard rock tunnel, and the effect is more significant for medium and above rock burst. According to the predicted results, the risk of rock burst can be reduced to a certain extent through adopting the corresponding preventive measures.

关 键 词：隧洞 岩爆 微震监测 防治措施 引汉济渭工程 

分 类 号：TV672[水利工程—水利水电工程] U459.6[建筑科学—桥梁与隧道工程]