Mechanical properties of unsaturated soils and their applications in geotechnical engineering
非饱和土力学特性及其在岩土工程中的应用

摘要

非饱和土作为岩土工程中的重要组成部分，具有复杂的力学特性。其独特的湿度、应力和变形行为直接影响工程的稳定性与安全性。本研究通过对非饱和土力学特性的深入分析，探讨了其在不同工程环境中的表现及应用，尤其是在基础工程、边坡稳定性和地下工程等方面的应用。文中提出了一些理论模型和实验方法，旨在为岩土工程中非饱和土的设计与施工提供指导和参考。通过对土壤水分特性曲线、土壤弹性模量等重要力学参数的研究，阐明了非饱和土在不同环境条件下的力学表现。结合工程实践，提出了非饱和土力学特性在现代岩土工程中的应用前景与挑战。

Abstract

As an important component in geotechnical engineering, unsaturated soils exhibit complex mechanical properties. Their unique behaviors in terms of moisture, stress, and deformation directly affect the stability and safety of engineering projects. This study conducts an in-depth analysis of the mechanical properties of unsaturated soils, exploring their performance and applications in different engineering environments, particularly in foundation engineering, slope stability, and underground engineering. Several theoretical models and experimental methods are proposed in this paper, aiming to provide guidance and references for the design and construction involving unsaturated soils in geotechnical engineering. Through research on key mechanical parameters such as soil-water characteristic curves and soil elastic modulus, the mechanical performance of unsaturated soils under different environmental conditions is clarified. Combined with engineering practice, the application prospects and challenges of the mechanical properties of unsaturated soils in modern geotechnical engineering are put forward.