通过蒲城电厂场地Q_2黄土的试坑浸水试验,以及相应的室内土工试验,对Q_2黄土的应力-应变曲线进行了分析,提出Q_2黄土不同的应力-应变模型,同时对Q_2黄土的矿化成份以及微观结构进行了试验研究,结合各个有代表性场地黄土试验资料,对湿陷系数与物理性指标的相关关系作了回归分析,最后应用模糊数学的方法建立了湿陷性黄土湿陷等级二级模糊综合评判方法,评判结果与现场实测基本符合。 The stress-strain curve of Q_2 loess was analyzed through the test pit immersion test of Q_2 loess on the site of Pucheng Power Plant and the corresponding indoor soil test. A different stress-strain model of Q_2 loess was proposed, and the mineralization of Q_2 loess was also proposed. As well as the microscopic structures, experimental studies were carried out. Combined with the loess test data for each representative site, regression analysis was performed on the relationship between collapsibility coefficient and physical indicators. Finally, a collapsible loess collapsibility rating was established using the method of fuzzy mathematics. Level fuzzy comprehensive evaluation method, the evaluation results are basically in line with the actual measurement.