临江破碎地层基坑涌水综合分析方法研究  

Study of Comprehensive Analysis Method of Water Gushing of Foundation Pit Near River in Fractured Ground

作　　者：王洪波[1] 张庆松[1] 刘人太[1] 李术才[1] 张乐文[1] 姜鹏[1] 郑卓[1] WANG Hongbo ZHANG Qingsong LIU Rentai LI Shucai ZHANG Lewen JIANG Peng ZHENG Zhuo(Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, Shandong, China)

机构地区：[1]山东大学岩土与结构工程研究中心,山东济南250061

出　　处：《隧道建设》2017年第4期455-461,共7页Tunnel Construction

基　　金：国家自然科学基金(41272385);山东大学基本科研业务费资助项目(2015YQ002)

摘　　要：岩溶破碎地层是地铁基坑水害的常见地质条件,复杂的水文地质条件是灾害频发的主要原因。以南京上元门车站为例,运用水文地质资料、地球物理探测及连通试验手段对南京上元门车站基坑岩性、岩溶裂隙发育特征及相对富水性进行深入研究。根据薄弱地层围岩及裂隙类型,可将基坑划分为4个区域,并提出针对性的治理措施,形成临江破碎地层基坑涌水综合分析方法。最后通过选择适当的注浆材料和配套工艺对临江破碎带进行综合治理,取得较好的治理效果,验证了此方法的可行性,同时实现了临江破碎地层治理的信息化施工。实践表明,该方法能有效减少注浆治理的盲目性,大大降低治理成本,保证注浆治理的效果。The karst and fractured ground are common geological conditions during construction of foundation pit of Metro; and the complex hydrogeological environment is the main cause of disasters. The lithology,characteristics of karst fracture and relative water content of foundation pit of Shangyuanmen Metro Station in Nanjing are studied by analysis of hydrogeological data,geophysical exploration and connectivity test method. The foundation pit can be divided into 4 areas according to the types of surrounding rocks and fractures; and then relevant countermeasures are proposed.Good effects have been achieved by selecting proper grouting materials and construction technology. The practice shows that the comprehensive analysis method of water gushing of foundation pit near river in fractured ground used in case study is feasible and rational,so as to reduce the cost and achieve good effects.

关 键 词：地铁车站 基坑 岩溶破碎地层 涌水灾害 探查手段 注浆治理 

分 类 号：U455[建筑科学—桥梁与隧道工程]