隧道岩溶施工处置技术研究

Disposal Technology of Karst Tunnel Construction

岩溶隧道处置技术一直是工程界的重点及难点问题,结合某高速铁路贵州区段施工状况,将隧道岩溶分为串珠型或管道型的线状溶洞、洞穴型溶洞及洞厅型溶洞,根据其不同的填充性质提出了不同的施工处置措施。并具体结合丫口寨隧道、斗磨隧道、大独山隧道,对典型岩溶,包括无充填型溶洞群、暗河、富水填充型岩溶、过水通道型岩溶及黏土填充型岩溶的处置措施进行分析,主要结论为,针对岩溶隧道,应综合考虑岩溶类型和特征,因地制宜进行设计、施工。

Karst tunnel disposal technology has always been a key and difficult issue in the engineering field.Based on the construction conditions of Guizhou section of a high-speed railway,this paper divides the tunnel karst into beaded or pipe-type linear karst caves,cavern-type karst caves and cavern-type karst caves,and different construction treatment measures are put forward according to their different filling properties.In combination with Yakouzhai Tunnel,Doumo Tunnel and Dadushan Tunnel,the treatment measures of typical karst,including unfilled karst cave group,underground river,water-rich filled karst,water-passage karst and clay-filled karst,are analyzed.The main conclusions include:For karst tunnels,the type and characteristics of karst should be considered comprehensively,and the design and construction should be carried out according to local conditions.