Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (6): 1789-1797.doi: 10.13278/j.cnki.jjuese.201506202

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Event of Block up of Upper Yellow River by Dehenglong-Suozi Landslides

Guo Xiaohua1, Lu Yudong1, Li Xiaolin2, Sun Zheng3, Li Chongyang4, Zhang Rong1   

  1. 1. Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education/School of Environmental Science and Engineering, Chang'an University, Xi'an 710064, China;
    2. Environmental Geological Prospecting Bureau of Qinghai Province, Xining 810007, China;
    3. Engineering Investigation Institute of Qinghai Province, Xining 810016, China;
    4. Hydrology and Engineering Geology Department 915, Geological Investigation Institution of Sichuan Province, Chengdu 610012, China
  • Received:2014-02-21 Published:2015-11-26

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Abstract:

Giant landslides (1×108 m3) are common along the upper Yellow River from Longyang Gorge to Liujia Gorge. The largest one on record reached 30×108 m3, which had ever blocked and dammed the Yellow River. The study on the mechanism of giant landslides along the upper Yellow River would be important for construction engineering and countermeasures to prevent from any undesirable events. The author analyzed seven geological occurrences, and concluded that Dehenglong landslide and Suozi landslide occurred during 70-80 ka. They were triggered by an earthquake and dammed up the Yellow River at that time. They had a close relationship with the tectonic movement in Qinghai-Tibetan Plateau before ca. 80 ka, which is evidenced by the existence of the dammed lakes caused by Dehenglong-Suozi landslides.

Key words: the upper Yellow River, giant landslides, dammed lake, earthquake-triggered landslides, Dehenglong-Suozi landslides

CLC Number: 

  • P642.23

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