| Based on the large landslide reinforcement project of the La Goon Road and a large number of domestic and foreign literature, an analysis and a description on landslide reinforcements were given and the serviceability of the reinforcements were gotten. A better means of assessing landslide stability was used in this landslide after analyzing the domestic and foreign assessment methods of landslide stability.Combined the meteorological and hydrological data, the geological information of environmental quality with the geological survey, the reasons of the large landslide of La Goon Road were analyzed which provided the basis to judge the stability of the landslide. After the rock mechanical parameters of the landslide were gotten by experiments: elastic modulus E, Poisson's ratio, cohesion C, angle of internal friction and other mechanical parameters, a finite element model was found by ANSYS which was a large comprehensive finite element software, combined with practical engineering control measures. According to the results, the displacements and plastic zone developments of the large landslide before and after its reinforcement were analyzed, and the danger in the future was forecasted after its reinforcement. The landslide's safety factors before and after the reinforcement project are calculated using the strength reducing method, which gave a base for the evaluation of the landslide stability.The finite element analysis results show that the reinforcement design was suitable for the big landslide. The reinforcement design had a great reference value for other similar projects in design and stability assessment of landslide.
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