土液化特性中的几点发现

本文介绍了近二十年来在我国水利水电科学研究院进行饱和土振动液化试验研究中发现的几个重要特性。它们包括应力状态对饱和砂土振动液化过程中孔隙水压力变化的影响,颗粒排列对砂土骨架结构振动稳定性的影响,饱和砂土在振动作用下孔隙水压力的产生、消散和扩散机理,以及粉土（少粘性土）液化可能性的评价准则等等。这些特性都是当今研究液化问题中被重视和感兴趣的题目。文中表达了作者对这些问题的看法。

Some Findings in Soil Liquefaction

This paper presents some important findings found from the researchs on soil liquefaction during the past two decades in the Water Conservancy and Hydroelectric Power Research Institute of China. They are the effect of stress condition on the development of excess pore water pressure in the course of soil liquefaction, the effect of the orientation and arrangement of sand grains upon the stability of the skeleton structure of the sands against vibratory action, the mechanism of development, dissipation and dispersion of pore water pressure in a saturated soil mass commenced by vibratory action, and criteria for evaluating liquefaction potential of silty soils. These topics are receiving more attention now a day in solving the problem of soil liquefaction. The author also tries to deliver his opinion about these problems in this paper.