soft soil stratum 软土地层
silt soil stratum 粉砂土层
complex soil stratum 复杂地层
quaternary soil stratum 第四系土层
Tunnels in Shanghai area sit mostly on soft soil stratum saturated and shield tunneling is the construction method commonly used.
上海地区的隧道多处于饱和含水的软土地层,施工方法以盾构法为主。
The model is only suitable to isotropic elastic soil, but the soil stratum in real engineering site is always layered and anisotropic one.
这种模型适合各向同性的单一土层,而实际工程场地的地基土多是各向异性的成层土层。
The perforation diameter, speed as well as the power supply required are closely related to physical and mechanical properties of soil stratum.
它的穿孔直径和穿孔速度所需动力都与土层的各种物理力学参数有密切关系。
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