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在第一讲里,我们讨论了抽汲流体引起沉降的现象,描述了地面沉降与现场其它现象是如何相互关联的,特别是沉降与砂层中水位变动的相关性以及与受应力作用的含水层,或者含水层内粘土单元体(粘土透镜体或粘土夹层)的存在的相关性。在第二讲里,我们要讨论抽汲流体引起沉降的机理,以及介绍沉降垂直分量随时间变化的成功模拟。在这里,一维固结理论起着关键的作用。地下水文地质学的一个主要课题是如何预测地面沉降。含水体系压缩的不可恢复部分几乎全发生在其中的细粒沉积物中。在含水体系力学里,滞水体的作用是非常重要的。预测沉
In the first lecture, we discussed the phenomenon of sedimentation caused by fluid extraction and described how ground subsidence and other phenomena in the field are related to each other. In particular, the correlation between subsidence and the change of water level in the sand layer and the water content affected by stress Layer, or the presence of a clay unit body (clay lens or clay interlayer) in the aquifer. In the second lecture, we will discuss the mechanism of settling caused by fluid extraction and the successful simulation of the vertical component of sedimentation over time. Here, one-dimensional consolidation theory plays a key role. A major issue in groundwater geology is how to predict land subsidence. The non-recoverable part of the compressed aqueous system almost entirely occurs in the fine-grained sediments. In the mechanics of aqueous systems, the role of stagnant water is very important. Predictive Shen