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在室内模拟天然条件下硫酸盐盐渍土的盐胀特性，研究盐胀率与其主要影响因素之间的相互关系。试验结果得出初始于密度、补水高度、含盐量和含水量对盐胀率的影响，分析其盐胀机理。并利用多元非线性回归数学模型得出了各主要影响因素与盐胀率的相互关系式。
The salt expansion characteristics of sulfate saline soil under natural conditions were simulated indoors, and the relationship between the salt expansion rate and its main influencing factors was studied. The experimental results show that the effect of initial salt content, salt water content and salt content on salt expansion rate is analyzed. The mechanism of salt expansion is analyzed. And using the multiple nonlinear regression mathematical model to get the relationship between the main influencing factors and the salt expansion rate.