The invention discloses an early recognition method of a
loess shallow
landslide and belongs to the technical field of
landslide prevention and
control engineering. The method comprises the following steps that a, a basic
terrain data including the slope of a
landslide body alpha, the landslide area A, the upper
trailing edge slope of the landslide body beta, the upper
trailing edge area of the landslide body A<Lu> and the lower side slope of a free face gamma of the landslide body is determined according to field investigation survey; b, the upper slow factor U is calculated according to U=tan(alpha-beta)*(A<Lu> / A) ,wherein beta<alpha; c, when gamma>alpha, the landslide body has the free face, the
terrain synthetic discrimination factor of the landslide body T is calculated through the formula T=tan(alpha)+1.25U; d, the risk grade of the
loess shallow landslide is divided into low, medium and high three grades according to
terrain synthetic discrimination factor of the landslide body T. The early recognition method of
loess shallow landslide and the application can accurately classify the landslide risk in a quantitative way, and identify the early loess shallow landslide without a large amount of historical
observation data of the landslide, the early warning reaction time is shortened and the disaster prevention suitability is greatly improved.