双联拱隧道中导洞施工在浣溪隧道中的应用

The application of advancing middle drift in Wanxi double-arch tunnel construction

结合工程实例,介绍了中导洞施工工艺,提出了施工中如何预防和消除正洞开挖过程中爆破振动和飞石对中墙混凝土的影响,探讨了施工通风与排水,为全面推广与应用该技术提供理论基础和技术指导。

Combined with practical work the construction technology of advancing middle drift is introduced.In view of the blasting vibration and flying stone in excavation process of main tunnel practical prevention and treatment measures are proposed.In the end ventilation and drainage measures are introduced in order to promote the application of this technique.