摘要
九寨沟景区拥有世界自然遗产、世界生物圈保护区、绿色环球21世纪3项国际桂冠,还先后评为国家级风景名胜区、国家级自然保护区、国家森林公园、国家地质公园、国家重要湿地、国家5A级景区。8·8九寨沟地震后,笔者有幸参加了九寨沟景区震后地质景观应急排查以及九寨沟世界自然遗产震后地质变化与重建对策研究工作,通过二次野外现场调查以及与前期已有成果的对比研究,发现九寨沟核心景区“层湖叠瀑”景观中除火花海、诺日朗瀑布、熊猫海3处景观地震后宏观特征变化明显外,其余景观包括树正群海、老虎海、犀牛海、诺日朗群海、镜海、五花海、箭竹海、天鹅海、长海、五彩池、珍珠滩瀑布、树正瀑布、日则保护站大泉等的宏观特征无变化或者变化不明显,其中火花海堤坝垮塌,使火花海景观消失;诺日朗瀑布在中部距顶面3~4m位置形成了二组相互交汇的裂隙,诺日朗群海的水流沿交汇处的裂隙漏失并对瀑布进行冲刷,瀑布崖壁有进一步形成崩塌的危险;老虎嘴—箭竹海之间由于两侧地形陡峭,地震后形成大量的高位崩塌,崩积物大量倾泻于熊猫海,造成熊猫海面积与容量减少。
The field investigation and study indicate thatafter the earthquake on Aug.8,2017,the macro-features of the other scenic spots did not change or change significantly except the Spark Lake,Norilang Fall,the Panda Lake inthe heart of Jiuzhaigou ValleyScenic Spots.The Spark Lake dam collapsed,making the Spark Lake landscape disappearing.Two intersecting fissures was formed at the site of about 3-4m from the top surface in the middle of the Nuorilang waterfall which resulted in the current leaking through the fissures at the junction and washing over the fall cliff and making the cliff of the fall in danger of further collapse.Due to The massive high-level collapses followed the earthquake,huge amounts of colluvial material dumped into the Panda Lake which resulted in the decrease of the lake area and the volume of the Panda Lake.
作者
曹俊
杨更
杜杰
宋伟
刘明
袁茂珂
朱忠福
肖维阳
CAO Jun;YANG Geng;DU Jie;SONG Wei;LIU Ming;YUAN Mao-ke;ZHU Zhong-fu;XIAO Wei-yang(Regional Geological Surveying Team,BGEEMRSP,Sichuan Rongda Jiuzhou Tourism Technology Co.,Ltd Chengdu 610213;Jiuzhaigou Valley Scenic Spots Administration,Jiuzhaigou,Sichuan 623402)
出处
《四川地质学报》
2021年第1期161-166,共6页
Acta Geologica Sichuan
基金
世界自然遗产保护与恢复研究课题之九寨沟世界自然遗产震后地质变化与重建对策研究子课题项目资助。
关键词
8·8地震
“层湖叠瀑”
景观变化
九寨沟景区
Jiuzhaigou earthquake on Aug.8,2017
stratified lakes and folded waterfalls
landslide change
Jiuzhaigou ValleyScenic Spots
