广乐高速梅花2号隧道岩溶处理方案设计  

Construction Method Design of Meihua No.2 Tunnel in Karst Terrain for an Expressway Project

作　　者：蹇宜霖 陈驰 彭文波[1] JIAN Yilin;CHEN Chi;PENG Wenbo(CCCC Second Highway Consultants Co.Ltd.,Wuhan 430056)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉430056

出　　处：《土工基础》2020年第2期131-134,共4页Soil Engineering and Foundation

摘　　要：以广乐高速梅花2号隧道为工程背景,在分析和总结工程经验的基础上,着重分析充填物以软塑状粘性土为主的岩溶隧道处理的方案设计,从岩溶地区隧道的衬砌方案、围岩加固方案、超前支护方案以及超前地质钻探几个方面进行阐述,提供了针对岩溶隧道的全面详细的处理方案。对隧道全线采取动态设计、动态施工的原则,针对岩溶不同规模及地质情况做好相应设计,施工时根据超前地质预报动态掌握前方地质情况,动态调整施工方案。该隧道已竣工并运行良好,设计及施工具有指导性,为以后类似的工程设计和施工提供参考。The Meihua No.2 tunnel is located in the karst terrain. The fill soils in these well-developed rock cavities and pinnacles are soft to medium clay. This paper presents the construction techniques used in the liner selection, rock mass stabilization, advanced excavation support and the predicative geological conditions drilling during the tunnel excavation. Different construction techniques were used based on the karst geological conditions encountered during the construction. The tunnel was successfully constructed and is under the operation.

关 键 词：岩溶隧道 软塑状粘土 方案设计 

分 类 号：U456[建筑科学—桥梁与隧道工程]