饱和黏性土渗透系数测定方法综述  

Review on measurement methods of permeability coefficient in saturated clay

作　　者：王鸣宇[1] 王秀艳[1] 孙琳[1] 

机构地区：[1]中国地质科学院水文地质环境地质研究所,石家庄050061

出　　处：《南水北调与水利科技》2015年第6期1162-1167,共6页South-to-North Water Transfers and Water Science & Technology

基　　金：国家自然基金项目"华北平原深层地下水超采引起的黏性土再固结效应研究"(40472139)

摘　　要：饱和黏性土的渗透系数作为水文地质学中的一个重要参数,其作用是不可忽略的。国内外对于饱和黏性土渗透系数的测定,按测试地点的不同分为室内测试和现场测试方法。测试方法所采用的原理还是以达西定律和太沙基固结理论为主。对于饱和黏性土渗透系数的测试方法较多,但目前尚未形成一套完整的测试体系,测定的方法存在较多不足,测定所选用的仪器也有较多不合理性,为此,回顾了渗透系数测定的历史,探讨了饱和土渗流发生的机理,并总结了饱和土渗透系数的室内测试方法和现场测试方法,在介绍了传统的测试方法之后,又介绍了溶质示踪法、固结曲线确定渗透系数等新的方法,最后针对如何测定饱和土渗透系数进行了探讨。Permeability coefficient of saturated clay is an important parameter in hydrogeology,and its testing methods include laboratory and in-situ methods according to different testing sites.Darcy′s Law and Terzaghi consolidation theory are main theories applied in the testing methods.However,there is not a complete test system,and current testing methods and instruments have their own deficiencies and irrationality.In this paper,the history of measurement methods of permeability coefficient in the saturated clay is reviewed,the mechanism of the seepage in the saturated soil is discussed,and the laboratory and in-situ testing methods are summarized.Besides the traditional testing methods,the new test methods to determine permeability coefficient,such as tracer method and consolidation curve,are introduced.Finally,the paper discusses how to determine permeability coefficient in the saturated soil.

关 键 词：渗透系数 饱和黏性 土室内测试 现场测试 达西定律 太沙基固结理论 水文地质参数 

分 类 号：P642[天文地球—工程地质学]