gravel fill

用法例句

The paper introduces in detail the selection of the main technical parameters of the intake unit, calculation of the intake unit dimensions, determination of the amount of silt accumulation and the methods of silt drainage, and so on.

在某给水改扩建工程的设计中,对取水构筑物的设计方案进行了比选,最终确定采用顺流式河岸内斗槽预沉(预沉渠道)取水方式,详述了该取水构筑物主要技术参数的选取、构筑物尺寸的计算、泥砂淤积量的确定及泥砂排除措施等,可为取水工程的设计提供参考。

The effects of sediment on dynamic pressure acting on rigid dam during vertical ground motion;

淤积泥砂对垂直地运动作用时刚性坝面动压力的影响研究

Effects of sediment on dynamic pressures acting on rigid dam due to horizontal ground motion;

淤积泥砂对水平地运动作用时刚性坝面动压力的影响

In this placer,the grain size of the diamonds which occurs in a alluvial grit gravel of residual two-tarraces are large and more gem diamonds can be selected out.

郯城金刚石砂矿属冲积层产状被破坏的阶地砂矿，金刚石产在残余二阶地冲积砂砾层中，金刚石颗粒大，宝石级金刚石较多，是宝石工业的重要原料基地。