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。

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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。

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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。

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