The ground stratum is quite complex, with silt layer and fine sand layer mixed, so the construction is difficult to be carried out and the requirement of pit support is strict.
基坑所处地层十分复杂,有较厚的淤泥层和细砂层,基坑支护要求高,施工难度大。
The model stratums mainly included miscellaneous filling soil surface, interaction stratum of silty clay, silt and fine sand and pebble round gravel at the bottom of station tunnel.
模型介质材料分别模拟地表杂填土层,粉质黏土、粉土、粉细砂互层和车站隧道底部的卵石圆砾层;
At the stratum, the content of sand and clay varies in an opposite way, while the content of silt remains quite stable.
两柱状样地层中粉砂含量基本不变,砂与粘土含量则呈此消彼长。
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