德商高速公路鄄城黄河大桥桥位区地震活动频繁，地基饱水的粉、细砂层发育。
Within the site of Juancheng Yellow River Crossing Bridge on Dezhou-Shangqiu highway, the earthquake activity is frequent and there develop saturated silty and fine sand layers.
第三纪和晚侏罗纪时期沉积的弱胶结粉细砂层在我国东北、南地区有广泛的分布。
Weak cemented fine quicksand layer deposited at the Tertiary Period and Jurassic Period is widely distributed in China's northeast and southwest regions.
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 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.
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