【摘要】 运用FLAC3D程序,对广州地铁体育西路站双线交汇处暗挖段放坡支护引起的稳定性问题进行模拟计算,采用多方案对比淘汰逐步优化的方法进行最佳放坡支护方案选择,并对按最佳放坡支护方案施工引起的力学行为特性进行了分析研究.研究表明,土层注浆、管棚超前支护和喷锚对交汇段岩土体和一号线车站结构的稳定性起了十分积极的作用.更多还原

【Abstract】 With the numerical code FLAC^3D, some numerical simulations of the stability of rock mass and structure are made for a slope in the interjunction between No.1 line and No.3 line of Guangzhou subway. Using the comparison method the optimum scheme for support parameters was selected from 4 schemes. The mechanical behaviors caused by slope cutting and support fixing are studied at last. It is shown that the grouting, pipe lodge pole advance tunnel support and shotcreat-bolt have taken great positive effect for the stability of rock mass and structure.更多还原