冻融作用对黄土物理性质影响研究综述

A Review of the Effects of Freeze-thaw on Physical Properties of Loess

我国黄土总面积达63.1万平方公里,该数据远超其他国家,由此也带来许多问题,特别是冻融作用对黄土工程性质产生的不良影响,该作用会对工程产生巨大影响,是黄土工程产生冻害的主要原因。冻融作用会影响黄土中水分的分布,改变黄土的饱和度,给土体带来沉降和变形。从本质上说,冻融作用会在一定程度上破坏黄土结构,从而引发黄土物理性质发生改变。本文通过分析和整理冻融作用对黄土影响的相关文献,针对目前研究现状、存在的问题和发展趋势,归纳其中共同点,总结其中存在规律,从而对冻融领域未来做出展望。

The total area of loess in China is 631,000 square kilometers. This data far exceeds that of other countries. It also brings many problems, especially the adverse effects of freeze-thaw on the engineering properties of loess. This effect will have a huge impact on the project and is the main cause of frost damage in the loess project. Freeze-thaw effect will affect the distribution of water in loess, change the saturation of loess, and bring settlement and deformation to soil. In essence, freeze-thaw effect will destroy the structure of loess to a certain extent, which will lead to changes in the physical properties of loess. This article analyzes and collates the relevant literature on the influence of freeze-thaw effect on loess, summarizes the common points, summarizes the existing laws, and looks forward to the future of the field of freeze-thaw in view of current research status, existing problems, and development trends.