Abstract: The soil properties of the small and micro erosion gullies in the mountain areas in the weathered granite soils are generally softer and more special than those of the surrounding soil layers. The support design of the soil slope in these gullies should be focused on, and special strengthening should be performed if it is necessary. Throughout the engineering practice, this paper introduces several case histories that can be used for the reference in support design. First, pay attention to checking the accuracy and comprehensiveness of the basic survey data, especially the review of topography and the influence of microtopography on geological conditions. The second is to pay attention to the construction and dynamic design of the information method. According to the actual conditions on the site, timely and effectively adjust the support design plan. For the soil slope at the position of the small and micro erosion gullies, if it is necessary, concrete shotcrete, grouting, and deep drainage methods can be used. Measures such as sweep holes to strengthen support.

Key words: Small Erosion Gully, Slope, Supporting Structure