【摘要】 岩爆是高地应力区地下工程硐室开挖施工中常见的一类动力失稳地质现象。以秦岭终南山特长公路隧道为背景,通过对2#竖井工程施工过程中岩爆进行综合调查与理论分析,采用声发射(acoustic emission,AE)预报技术进行了综合预测和分析,得出岩爆发生时的声发射特征与动态演化规律,并提出岩爆综合防治措施,保证了安全施工。更多还原

【Abstract】 Rock-burst is a common type of dynamic destabilization geological phenomenon during underground projects excavation in high geo-stress areas.Taking Zhongnanshan highway tunnel in Qingling mountain as an example,through comprehensive investigation and theoretical analysis of rock-burst during 2# shaft excavation,combining with acoustic emission(AE) prediction techniques,we forecast and analyze the rock-burst,and obtained the acoustic emission(AE) characteristics and dynamic propagation regularities when the rock-burst is happening.Based on these,the comprehensive rock-burst controlling measures are proposed to ensure the safe construction.更多还原