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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Silt sand was largely used in the roadbed of a main road locating in alluvial plain in Haikou City. This paper discusses the construction technical essentials of this silt sand roadbed.

海口某城市干道位于冲积平原地区，路基填筑用土大部分采用周边地区粉砂土，本文主要阐述粉砂土路基施工技术要点。

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Loam is a soil with roughly equal proportions of clay, sand and silt.

壤土是由大约等份的黏土、沙和粉砂合成的。

《牛津词典》

The soil should be full of loam, a mixture of sand, silt,clay and organic material.

VOA: special.2009.04.07

Dig up, suck up, that sand and silt then separate the heavier cassiterite from the lighter sand and silt.

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But as the water recedes it has left all the silt and sand and debris.

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The project involved removing the silt and sand with excavators then dumping it out to sea as well as replacing all the chains that were holding buoys in place.

BBC: St Aubin