灰岩区输水隧洞典型岩溶工程地质问题处理

Treatment of Typical Karst Engineering Geological Problems of Water Conveyance Tunnel in Limestone Area

以杭州市第二水源千岛湖配水工程灰岩区输水隧洞为依托,进行典型发育形态岩溶工程地质问题处理的研究。根据前期工程地质资料,基于隧洞开挖所暴露的多类型岩溶现象,结合超前地质预报成果,通过具体问题具体分析,以实际采用的处理措施为依据论述相关岩溶地质问题的处理方法。在分析过程中,阐述各典型岩溶现象的发育形态、基本特点,以及对工程可能造成的影响,并阐明所采用处理方法的基本原理,总结出几点工程经验。研究成果对该类岩溶区输水隧洞工程实施具有一定的借鉴、指导意义。

Based on the water tunnel in the limestone area of the second water source Qiandao Lake water distribution project in Hangzhou, this paper conducts research on the treatment of typical karst engineering geological problems. Based on the preliminary engineering geological data, based on the multiple types of karst phenomena exposed by the tunnel excavation, combined with the results of advanced geological predictions, the research was carried out. Through specific analysis of specific problems, the treatment methods of related karst geological problems are discussed based on the actual treatment measures. In the analysis process, the development form, basic characteristics of each typical karst phenomenon,and the possible impact on the project are explained. And clarify the basic principles of the processing methods used, and sum up several engineering experiences. The research results will have certain reference and guiding significance for the implementation of water tunnels and other projects in this type of karst area.