1) sand and gravel overlay
砂砾覆盖层
2) d and gravel overlay
沙砾覆盖层
3) coarse sand coating
粗砂覆盖层
4) grit and gravel overburden layer
沙砾石覆盖层
5) sandy gravel overburden layer
砂卵石覆盖层
1.
The cofferdam of power house at Taipingjiang Hydropower Station is built on thickly bedded sandy gravel overburden layer mixed with sandy loam and erratic stone that has unfavorable anti-seepage property.
太平江水电站厂房围堰为深厚砂卵石覆盖层,且夹含砂壤土及漂石,防渗性能极差,在围堰防渗施工前,进行钻孔勘探,探明了防渗轴线的实际地质情况,选择了高压旋喷灌浆为主的防渗方案,并进行高喷灌浆试验,选定合理的施工参数,实现了高喷施工速度快、防渗效果佳的目的,保证了厂房基坑施工的顺利进行。
6) stone coverage
石砾覆盖
补充资料：沙砾
沙子和碎石块：秋风吹滩起沙砾｜大风起，沙砾击面。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条