临汾草峪岭隧洞施工塌方的原因浅析与预防

Analysis on Causes of Tunnel Cave in and Its Preventive Measures

隧洞施工遇到不良地质段产生塌方，是较普遍存在的问题。如何有效地防止或减少塌方？ 本文根据临汾草峪岭隧洞的施工实践，分析了塌方的原因，认为针对性地采取必要的措施加以预防是减少塌方的有效途径。

In this paper,Caoyulin tunnel in Linfen Prefecture of Shanxi Province is taken as an example,the author holds that the causes of tunnel cave-in includes poor geologic condition,non reasonable construction method,and insufficient construction preparation,and suggests that beforehand forecasting on geologic condition,rational construction scheme,well arranged supporting,appropriate treatment on groundwater and loosening rock be adopted in order to effectively prevent tunnel cave-in.