百岛湖水库输水隧洞工程地质分析及评价

Engineering Geological Analysis and Evaluation of the Water Transmission Tunnel of Baiquan Lake Reservoir

随着我国水利工程向着长、大、深的方向发展,输水隧洞建设无疑是水利工程的关键性控制工程。笔者以百岛湖水库输水隧洞(公黄隧洞)为研究对象,在详细调研隧道周边的地形地貌、地层岩性、地质构造、水文地质条件的基础上,通过野外调查、钻探、物探和室内试验的手段,提出了该隧洞建设将可能会遇到的工程地质问题:煤矿与采空区、煤系段瓦斯、隧道涌水、突泥、地下水腐蚀性、对环境水系影响、高地应力、隧洞围岩稳定性和施工对周边环境的影响等问题,并给出了相应的工程处理建议。

With the development of Chinese water conservancy project in the long,large and deep direction,water transmission tunnel construction is undoubtedly the key control project of water conservancy project.The author takes the Baidao Lake Reservoir water transmission tunnel(Gonghuang tunnel)as the research object,on the basis of the detailed investigation of the topography,formation,geological structure and hydrogeological conditions around the tunnel,the engineering geological problems that will be encountered in the tunnel construction are presented:coal mine and mining area,coal section gas,tunnel gushing,mud penetration,groundwater corrosion,impact on environmental water system,high ground stress,stability of tunnel surrounding rock and impact of construction on the surrounding environment,and the corresponding engineering treatment suggestions are also given.