为防范高应力深埋隧道开挖过程出现的岩体失稳风险,促进隧道安全、高效施工,利用微震监测技术对某深埋铁路隧道施工 过程中的围岩破裂情况进行监测,用不同的微震活动性表征隧道潜在的不同的高应力灾害风险大小; 利用监测区域内的微震活动 动态演化过程所表征的隧道高应力灾害风险大小变化情况,合理选择施工工序、施工时机、施工方式等,取得了较好的效果。 研究 结果表明: 利用微震监测方法获取的围岩微震活动规律可指导深埋隧道施工过程管理,有助于降低施工过程中的安全风险,确保 人员、设备的安全,可为我国“一带一路”建设过程中重大深埋隧道工程的施工提供参考。

In order to avoid surrounding rock instability and guarantee the safe and efficient tunneling of deep-buried tunnel with high crustal stress, microseismic monitoring technology is used to monitor the surrounding rock fracture. And the different microseismic activities are used to characterize the potential risks of different high crustal stress hazards in tunnels. The construction procedures, time and methods can be reasonably selected based on the variation of high crustal stress hazard risk in tunnels reflected by dynamic evolution process of microseismic activity in monitoring area, and good effects have been achieved. Research results show that microseismic rule of surrounding rock helps to guide the construction process management of deep-buried tunnels and reduce the risks in construction process, which can ensure the safety of personnel and equipment and provide reference for other major deep-buried tunnels related to the Belt and Road Initiative in China.