Firstly, the physical and mechanical properties of Shapotou soft rock are detailedly analysed in this paper.

首先，本文对沙坡头坝基软岩的物理力学特性进行了详细的分析。

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The engineering properties and mechanical behavior are functions of the physical properties of the rock constituents and controlled by the alteration state.

岩石的物理性质受岩石成分及蚀变状态控制，而岩石的工程学性质和力学特征是其物理性质的函数。

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So the study of the physical and mechanical properties of heated salt rock is important and essential to ensure the safety of nuclear wastes disposed in salt rock.

因此，为保证核废料地下处置的安全性，研究盐岩在一定温度条件下的物理力学特性十分重要。

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