西峡公路隧道岩溶地区突水问题及施工处治方案分析

Analysis of Water Inrush Problem in Karst Highway Tunnel and Analysis of Construction Treatment Plan

从分析和探讨西峡公路隧道所处的地层岩性、岩层结构和地形地貌入手,根据西峡公路隧道岩溶地区修建隧道时出现的地面断裂且流出液体、路面基层发生突水、遇到面积较小的岩溶溶洞或渗水较为严重等问题,制定相应的处理方案,隧道衬砌周围小溶洞处置技术、隧道地基突水施工关键技术、隧道跨越长大溶洞施工关键技术,为解决修建隧道所发生的其他地质问题提供借鉴。

First analyze and discuss the lithology rock stratum structure and topography of the Xixia Highway Tunnel. Then according to the ground faults that occurred during the construction of the tunnel in the karst area of the Xixia Highway Tunnel, the outflow of liquid, the water inrush in the basement of the pavement, the karst caves with small area or the seri- ous water seepage, and the corresponding treatment plan were tonnulated. The small karst cave disposal technology around the tunnel lining, the key technology of the tunnel toundation water inrush construction, the key technology of the tunnel spanning the long karst cave construction, provide a reterence tor solving other geological problems occurred in the construe- tion of the tunnel.