【摘要】 对渝怀铁路金洞隧道出口连拱隧道段采用两导洞工法开挖施工,着重介绍了经过理论计算分析的隧道洞周位移、支护内力及安全系数变化情况,判断分析施工方案是否可行,确定出影响工程地质体稳定的关键部位。在施工过程中,采取相应必要的加固措施,减少施工盲目性,确保工程施工的安全稳定,取得了良好的工程效果。更多还原

【Abstract】 This paper introduces the feasibility of the tunneling scheme and the ascertainment of the key position which affects the stability of engineering geologic body by numerical analysis of strain distribution of tunnel supporting. The corresponding reinforcement method is necessary for safe and economic construction of the tunnel.更多还原