《非饱和土力学》是1997年中国建筑工业出版社出版的图书，作者是弗雷德隆德。本书是岩土工程方面的一本重要专著，主要讨论了非饱和土力学以及其性状。
简要回顾了非饱和土力学的研究历史及研究意义。
The research status and significance of the unsaturated soil mechanics at home and abroad are reviewed.
而且广义朗肯土压力公式能够合理利用已有的工程经验和工程数据，为非饱和土力学的工程实用化提供了一条新的思路。
The formula can appropriately utilize existing engineering experience and data, which is a new way to application of the soils mechanics for unsaturated soils in engineering.
本文主要的研究内容和成果如下：1在非饱和土力学的基础上推导了二维渗流控制控制方程的稳态渗流方程和瞬态渗流方程。
The main research content and result are as follows: 1 The two-dimensional governing equations for steady-state flow and transient flow are derived based on unsaturated soil mechanics.
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