Evaluation of Jiuzhaigou earthquake ecological sensitive area and demonstration of road reconstruction plan

A large number of geological disasters caused by the Jiuzhaigou 7.0 earthquake caused great damage to the landscape, ecology and infrastructure in Jiuzhaigou scenic area. The disasters along the scenic roads were frequent, the roads were severely damaged, and many were interrupted. Due to the extremely complicated terrain and geological conditions, the road section between the Wuhuahai and Xiongmaohai is most damaged. Reconstruction and other engineering activities in ecologically sensitive areas such as Jiuzhaigou can not meet the needs of the evaluation of engineering schemes by geological disaster assessment alone. At the same time, the interaction between engineering activities, geological disasters and ecology must be considered. This article for the first time combined with the geological disaster risk assessment, established the ecological risk assessment criteria for ecologically sensitive areas. Based on both of the disaster assessment and ecological risk assessment, the road restoration and reconstruction plan of Laohuzui road section in Jiuzhaigou was evaluated and demonstrated. The road restoration and reconstruction plan was finalized.