Debris flow dam formation in Southeast Tibet

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• 作者：Zunlan Cheng (1)
  Jishan Wu (1)
  Xueyong Geng (1)
  
• 关键词：Southeast Tibet ; debris ; flow dam ; dam formation
• 刊名：Journal of Mountain Science
• 出版年：2005
• 出版时间：June 2005
• 年：2005
• 卷：2
• 期：2
• 页码：155-163
• 全文大小：693KB
• 参考文献：1. CHENG Zunlan, ZHU Pingyi. 2003. Typical Debris Flow Triggered by Ice-Lake Break. / Journal of Mountain Science.6: 761鈥?20 (in Chinese)
  2. Institute of Mountain Hazards and Environment, Chinese Academy of sciences & Xizang Communication Department. 2001. Research on Water Damagr to Highways in Tibet. Chengdu: Sichuan Publishing House of Science and technology. Pp 123鈥?44 (in Chinese)
  3. WU Jishan, ZHANG Jun, CHENG Zunlan. 2003. Relation and its Determination of Residual Lager and Depth of Viscous Debris Flow. Journal of Sediment Research6: 8鈥?4 (in Chinese)
  4. YANG Zonghui. 1991. Summary of Super Debris Flow of Peilong Valley in Sichuan-Tibet Highway. Proceedings of Second Conference about Debris flow. Beijing. Science Press. Pp 252鈥?54 (in Chinese)
  5. ZHU Pingyi, CHENG Zunlan, YOU Yong. 2000. Cause to blockage of river by debrisflow sediment of Peilong Gully in the Sichuan-Tibet Highway. / Journal of Natural Hazards,9(1): 80鈥?3 (in Chinese)
  6. ZHU Pingyi, HE Zhiwen, WANG Yangchu. 1999. / A study of typical mountain hazards along Sichuan-Tibet highway. Chengdu: Science and Technology University Publishing House. Pp 172鈥?81.
  7. ZHU Pingyi, WANG Chenghua, TANG Bangxing. 2000. Characters of Great-Scale Accumulation of Chipping in Tibet. / Journal of Mountain Science 18(5): 453鈥?56 (in Chinese)
  
• 作者单位：Zunlan Cheng (1)
  Jishan Wu (1)
  Xueyong Geng (1)
  
  1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water Conservancy, 610041, Chengdu, Sichuan, China
  
• ISSN：1993-0321

文摘

Glaciers with their deposits abound in the alpine areas of Southeast Tibet. Large debris flows occur frequently from these deposits and form dams that block streams. In this paper, 3 events of large debris flows reported in Peilong Valley located in Southeast Tibet, and which resulted 2 blocking dams resulted, are discussed in details, focusing on the major factors controlling dam formation. The results shows that the first surge group caused by snow and ice avalanches, ice-lake breaks, and large-scale landslides, with a high peak discharge and high velocity, and an abundance of boulders, are most likely to form blocking dams.