STUDY ON THE CAUSE OF ROCKFALL DISASTER AND ITS PREVENTION IN LIANGYI PAVILION SCENIC SPOT OF THE WORLD GEOPARK FANGSHAN

The world geopark Fangshan scenic spot in Daxi town, Wenling city, Zhejiang province is located on the volcanic strata of Jiuliping formation, Moshishan group, early cretaceous. The formation of volcanic platform landscape in Fangshan is related to the hard rhyolite which is not easy to be weathered. According to field investigation, the rock mass in Fangshan scenic area has layered structure, and the engineering geological conditions are evaluated as good. However, there are many rockfalls in the high and steep reverse slope near the tour road, and mud and stone falling in the water zone may occur when the typhoon comes. Therefore, a serious geological hazard may be formed in some places where tourists appear. For example, in the typhoon season of 2013, Liangyi pavilion in Fangshan scenic area was damaged by mud and stones washed down from the top of the above-mentioned high and steep slope. In addition, a large number of falling rocks scattered on the ground in Liangyi Pavilion scenic spot was found. Tourism safety is seriously threatened by geological hazards in Liangyi Pavilion scenic spot. In terms of the prevention and control of geological disasters in Liangyi Pavilion, the engineering geological method of mountain tourism planning based on the combination of engineering geology and tourism was put forward to adjust the route of scenic spots, so as to ensure the safety of tourism and maintain the original state of Fangshan scenic area.