摘要
220 kV丽江变电所位于盆地与山麓接合地带,地层岩性主要为第四系残积型粘土和第三系粘土,土层具有中等膨胀潜势,若用非膨胀土换填或用改良膨胀土来回填工程造价均较高,因此,从膨胀土的野外特性、颗粒组成、膨胀潜势、回填特性来分析膨胀土用作填筑材料的适宜性,有重要的工程意义。
The 220kV substation of Lijiang is located between the basin and mountain, and there are clay minerals in the Tertiary System and clay minerals in the Tertiary System as its main rock stratum, which have the moderate expansive potential. The engineering cost is high if the unexpansive or improved expansive soil is used to substitute the clay as the backfilled soil. Therefore it is important for the engineering to analyze the filling feasibility of the expansive soil from its field characteristics, grain composition, expansive potential and backfilling.
出处
《土工基础》
2008年第3期36-38,共3页
Soil Engineering and Foundation
关键词
膨胀土
回填土
适宜性
expansive soil, backfilled soil, feasibility
