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XUE Qiang, ZHANG Mao-sheng, ZENG Qing-ming, et al. Characteristics and Formation Conditions of Maliu Gully Debris Flow in Longchi, Dujiangyan, Sichuan Province[J]. Northwestern Geology, 2014, 47(3): 177-184.
Citation: XUE Qiang, ZHANG Mao-sheng, ZENG Qing-ming, et al. Characteristics and Formation Conditions of Maliu Gully Debris Flow in Longchi, Dujiangyan, Sichuan Province[J]. Northwestern Geology, 2014, 47(3): 177-184.
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Characteristics and Formation Conditions of Maliu Gully Debris Flow in Longchi, Dujiangyan, Sichuan Province

  • Key Laboratory for Geo-hazards in Loess Area, MLR, Xi'an Center of Geological Survey, China Geology Survey, Xi'an 710054, China

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  • Received Date: December 17, 2013
  • Revised Date: July 15, 2014
  • Available Online: July 28, 2022
  • Published Date: September 04, 2014
    Graphical Abstract
    • Abstract
  • The characteristics and formation conditions of Maliu gully debris flow were analyzed by field investigation in Longchi, Dujiangyan, Sichuan Province. The storage capacity of loosening solid matter was calculated and the range of danger zone in this area was designated. The results show that the topographic characteristics of Maliu gully basin provided favorable terrain conditions for the debris flow; besides, the Wenchuan earthquake and the Lushan earthquake have provided rich source conditions, and many heavy rainfall events have offered adequate water conditions for the formation of the debris flow. Moreover, the calculations show that the storage capacity of loosening solid matter is about 29.21×104 m3 in Maliu gully, with about 13.19×104 m3 in formation area, 3.27×104 m3 in flowing area, 12.75×104 m3 in accumulation area. In addition, the maximal hazard zone range of debris flow is 0.2471 km2.
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