This thesis estimates siltation intensity of Guangli channel by the obtained data and the data of numerical simulation, and suggests the dredged sand volume from the channel every year.

本文利用已得的数据资料以及数值模拟后的数据资料进行了回淤强度的预算，并据此对航道疏浚后每年的清淤量提出了合理的建议。

youdao

USES material not qualified. Such as sand, stone, aggregate quality unqualified; In addition, mostly because cement volume expansion rate is too large (stability serious adverse).

所用材料不合格。如砂、石、集料质量不合格；除此之外，大多数是因为水泥体积膨胀率太大(安定性严重不良)。

youdao

However, Domestic technology lag behind foreign technology in some areas, such as volume control with plastic, sand thickness uniformity control.

但在一些关键技术上，如含胶量控制，夹砂层厚度均匀性控制，与国外同类产品还存在一定的差距。

youdao

This problem was avoided in 2004, but unfortunately, on that occasion, the volume of sand available behind the dam was too low to rebuild the sandbanks.

ECONOMIST: Flooding the Grand Canyon

According to RBM, the minerals removed from the sand through mining comprise about 5% of the dunes' total volume.

CNN: South Africa dune mining whips up sandstorm