九寨沟地震生态敏感区评估与道路重建方案论证

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

九寨沟7.0级地震诱发大量地质灾害对九寨沟景区景观、生态和基础设施造成了较大破坏,景区公路沿线灾害频繁,公路受损严重,多处中断,其中五花海与熊猫海之间的老虎嘴路段因地形地质条件极其复杂,受损最为严重。在九寨沟生态极其敏感区进行恢复重建等工程活动中,仅靠地灾评估无法满足工程方案评价的需要,同时须考虑工程活动、地灾和生态之间的相互影响。本文首次结合地灾风险评估,建立了生态敏感区的生态风险评估标准,在对九寨沟老虎嘴路段联合进行地灾评估和生态风险评估的基础上,对该路段道路恢复重建方案进行了评价论证,最终确定道路恢复重建方案。

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.