8·8地震后九寨沟景区地质灾害分布及其对九寨沟核心景观影响

Distribution of Geohazards in the Jiuzhaigou Valley Scenic Spots and Its Impact on Core Landscape of the Scenic Spots after Jiuzhaigou Earthquake on August 8,2017

8•8地震后,九寨沟景区共发育地质灾害隐患153处,其中崩塌96处、滑坡16处、泥石流26处、不稳定斜坡15处,按地质灾害规模划分有巨型2处、大型12处、中型44处、小型95处;新增地震次生灾害隐患81处,其中崩塌56处、不稳定斜坡10处、滑坡12处、泥石流3处;九寨沟地质灾害主要集中分布于日则沟、树正沟、则查哇沟沿沟两侧海拔2200~3200 m范围,日则景区56处、树正景区41处、长海景区31处、扎如景区12处、丹祖沟景区13处,同震地质灾害具有明显的“断层效应”;景区内分布的滑坡、崩塌等松散堆积物为今后泥石流的形成提供了物源,对当地居民、游客和旅游服务设施和景观资源构成潜在威胁。

After Jiuzhaigou Earthquake on August 8,2017,153 potential geohazards including 96 avalanches,16 landslides,26 debris flows,and 15 unstable slopes are developed in the Jiuzhaigou Valley Scenic Spots.A total of 81 potential post-earthquake geohazards have been added,including 56 avalanches,10 unstable slopes,12 landslides and 3 debris flows.These geohazards are distributed on the sides of Rizegou Valley,Shuzhenggou Valley and Zechawagou Valley with an elevation of 2200-3200 m.There are 56 geohazards in the Rize Scenic Spots,41 geohazards in the Shuzheng Scenic Spots,31 geohazards in the Changhai Scenic Spots,12 geohazards in the Zharu Scenic Spots and 13 geohazards in the Danzugou Valley Scenic Spots.These potential geohazards pose a potential threat to local residents,tourists and tourism service facilities and landscape resources.