Triggered by outburst flood, mudflow is a kind of debris flow and also a form of soil erosion, and it is an indicator of the most serious soil erosion process in the Loess Plateau.
To join ellipse yield function, hardening parameter with plastic work, associated flow law and damage theory, the elastoplastic damage constitutive model of loess were derived.
结合以塑性功为硬化参数的椭圆形屈服面，根据相关联流动法则及损伤理论推导出了黄土弹塑性损伤本构模型。
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Occurrence conditions of liquefaction for loess and the judgment method of flow slide of saturated loess by steady state strength are presented.