A Preliminary Study of Geological Disasters in Wolong National Nature Reserve in Sichuan

Wolong National Nature Reserve was severely affected by Mao County-Wenchuan fracture control and Wenchuan earthquake on May 12,2008. The main types of its geological disasters were collapses, landslides, mudslides,and unstable slopes. The agency compiled the measured data about 159 geological disaster spots of Wolong Reserve in April 2013, including 17 landslides, 80 collapses, 42 mudslides, and 20 unstable slopes. The geological disaster risk analysis showed that 6 727 people and 261.95 million yuan property were threatened by the geological disasters. The geological disasters were mainly distributed along the Pitiao River shore, and became graolually serious from Dengsheng Ditch to Water Dividing Board. At the same time, few recommendations were put forward about the disaster prevention and control based on geological disasters characteristics.