On Engineering Geological Characteristics of Quaternary Expansive Soil in Yangtze-to-Huaihe Water Diversion Project
In order to study the engineering geological characteristics of quaternary expansive soil distributed along the Yangtze-to-Huaihe water transmission line,various investigation methods such as geological surveying and mapping,field drilling,in-situ testing and indoor soil test were adopted,and the research results of the test sec-tion are analyzed and summarized.The study shows that the quaternary expansive soil of the Caizi Lake Line,Xi-aohe Branch Line and Yangtze-to-Huaihe Communication Line in Yangtze-to-Huaihe water diversion project is mostly distributed in the second-grade or above terrace,hilly land and hilly area,and the expansion potential is mainly weak and medium expansive soil,with main characteristics as expansion and contraction,overconsolida-tion,fracture and so on.Based on the engineering geological characteristics of quaternary expansive soil,the ex-pansion grade and subdivision of the distributed expansive soil channels are divided,and the evaluating method of the shear strength of expansive soil channel slope as well as the treatment measures of different grades of expan-sive soil channel slope are put forward.
the Yangtze-to-Huaihe water diversion projectexpansive soil channelengineering geological characteristics
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