sand soil foundation

The earth dam foundation at Heilongtan Reservoir in Lunan county, Yunnan province is consisted of silty sand Layer and silty soil with low bearing capacity and poor shear strength.

云南省路南县黑龙潭水库土坝基础属粉细沙层及低液限粉质土，允许承载力低，抗剪强度差，不足以维持坝体稳定。

The application of gravel pile and CFG pile composite foundation in foundation treatment of liquefaction of sand and soil in seismic area is introduced combined with engineering example.

结合工程实例，介绍了在高地震区砂土液化地基土处理中，应用碎石桩、CFG桩组合型复合地基。

Middle reaches canal head foundation is the non-cohesive soil, extremely loose silt sand.

中游渠首地基是粘粒极少、极松散的粉细沙层。