[Objective] To analyze the development characteristics and formation mechanism of geological disasters in order to improve the prevention and control of geological disasters in Jian'ou City

Fujian Province. [Methods] Based on the detailed investigation on geological disasters

through the analysis of the geological disaster development type

scale

distribution and damage features of Jian'ou City

the development rule of geological disasters was summarized in the area. According to the formation conditions and inducing factors of geological hazards

with the analysis of typical disaster

the formation mechanism and different shear strength characteristics were identified. [Results] (1) The characteristics of the disaster which developed in a large numbers of small scale landslide were summarized

and general performance of the soil collapsed along the bedrock surface; (2) The causes of geological disaster include the following points: firstly

the frequent tectonic movements resulted in a broken rock mass in the area which contained unstable structural plane combinations. Secondly

due to the low shear strength of soil on the surface of the slope

slope destruction would be easily induced under artificial cut slope and rainfall conditions. [Conclusion] The condition of geological environment in Jianou City is poor

and unreasonable cutting slope is easy to induce landslide.