【摘要】 本文依托穿越5·12汶川强震区在建王登隧道塌方实例,系统分析了该区域隧道塌方灾害的基本特征,结合地震波反射法(TSP)超前预报技术,系统介绍了针对强震区千枚岩隧道塌方的预报、成因机制以及治理技术;塌方段治理后初支与围岩接触压力及围岩变形长期监测数据表明所述塌方治理方案是合理有效的,为同类地质条件隧道塌方灾害治理提供一定参考意义。更多还原

【Abstract】 In this paper,the tunnel collapse accident occurred in under building Wangdeng tunnel was taken as an example. Wangdeng tunnel was located in a meizoseismal area due to the 5·12 Wenchuan earthquake. The basic characteristics of tunnel collapse were analysed. Combined with the tunnel seismic prediction technology(TSP),the paper systematically introduced the collapse prediction,genetic mechanism and treatment measures for phyllite tunnel in meizoseismal area.Based on the long time monitoring data of surrounding rock deformation and pressure between surrounding rock and primary support,the tunnel collapse treatment scheme was checked to be highly efficient and rational. The engineering experience could be taken as a significant reference for other similar projects.更多还原