Launching research has important theoretical and practical value on model test study of the relationship betweenloess landslide and rainfall. According to the monitoring data of model test of loess slope, formula expression ofsafety factor has been fitted on landslide. Firstly, the loess slope damage process was monitored at different rainfall intensity,rainfall duration through rainfall landslide model tests. Secondly, some parameters were determined by laboratorytests, such as loess unit weight, moisture content, shear strength. Thirdly, the relational expression was fitted betweenmoisture and rainfall intensity, rainfall duration, cohesion, internal friction angle, unit weight. Finally, moisture contentbeing an intermediate variable, the expression was got between landslide safety factor and rainfall intensity, rainfall duration.
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