下穿高速公路隧道引道U型槽施工技术研究

Study on Construction Technology of U-shaped Groove Underpassing Highway Tunnel Approach

下穿高速公路隧道引道工程,在运营过程中比较容易出现问题,特别是通过不良地质和地下水水位较高的富水地段容易产生多种病害,破坏路基路面结构,影响交通行车安全,通过增设道路U型槽可以有效减小路基不均匀沉降和防止地下水侵入路基,减少后期运营中的缺陷和病害发生。

It is easy to have problems in the operation of the tunnel approach project underneath the expressway.In particular,a variety of diseases are prone to occur in the water-rich section with poor geology and high groundwater level,which destroys the subgrade and pavement structure and affects the traffic safety.The addition of road U-shaped groove can effectively reduce the uneven settlement of the subgrade and prevent groundwater from invading the subgrade,and reduce the defects and diseases in the later operation.