工布江达隧道洞口滑塌处理方案

Treatment scheme of Gongbujiangda tunnel portal slump

介绍了工布江达隧道的工程概况,对洞口滑塌的特点和成因进行了分析,提出了洞口滑塌的处理方案,对明洞桩锚支护结构开挖的稳定性进行了验算,验算结果证明了该方案的有效性,为类似工程提供了参考。

The engineering situation of Gongbujiangda tunnel is introduced in this paper. The characteristics and causes of tunnel portal slump are analyzed. Treatment scheme is presented and the pile-anchor retaining structure scheme is proved to be effective owing to the calculation results,which provides some guidance for similar engineering.