挡水棚洞结构在禾荷围隧道工程中的应用

摘要

Combining with the geomorphological features and the geological circumstance at Hehewei Tunnel from Boluo to Shenzhen section along Guangdong-Hu＇nan Expressway,the study points out the optimal design scheme for the canopy cave of V-shaped valley at No.1 and No.2 Hehewei Tunnel,so as to make the hangar tunnel have the function of possessing vehicular access and preventing gully surface water,and indicates the design after the improve can promote the safety of the tunnel construction,save engineering cost and points out some suggestions and reference for comparison in the design and construction of similar projects.%结合粤湘高速公路博罗至深圳段禾荷围隧道地貌特征、地质情况,提出了在禾荷围1,2号隧道＂V＂字形谷位置设置棚洞的优化设计方案,使棚洞具有车行横通道兼阻挡冲沟地表水的功能。改进后的设计提高了隧道施工中的安全性、大大的节省了工程投资,可为类似工程的设计和施工提出建议和类比的依据。