PEI Laizheng, TAN Jianmin, LI Ming, et al. Formation Mechanism and Dynamic Characteristics of Chengpin Debirs Flow on July 16, in Anhua County of Hu'nan Province[J]. Bulletin of Soiland Water Conservation, 2018, 38(4): 34-37.
PEI Laizheng, TAN Jianmin, LI Ming, et al. Formation Mechanism and Dynamic Characteristics of Chengpin Debirs Flow on July 16, in Anhua County of Hu'nan Province[J]. Bulletin of Soiland Water Conservation, 2018, 38(4): 34-37. DOI: 10.13961/j.cnki.stbctb.2018.04.006.
[Objective] By analyzing the formation mechanism and dynamic characteristics of the debris flow disaster
this paper aims to provide a scientific reference for prevention and mitigation research of the future disaster.[Methods] By field investigation and analysis.[Results] The disaster formation conditions of the Rangjia gully
in Anhua County
Yiyang City
Hu'nan Province
including topography
formation lithology and hydrology
are all prone to the formation of large-scale debris flow. Due to the continuous heavy rainfall
a large-scale landslide was formed and blocked the gully channel
but then the landslide-dam failed and formed outburst debris flow with the peak flow up to 190.65 m3/s.[Conclusion] The most striking feature of this debris flow is the conversion of landslide to debris flow. However
two manmade check dam along the downstream of the channel were all destroyed by outburst flow from the upstream
which magnified the peak flow.
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references
Cui Peng, Chen Xiaoqing, Zhu Yinyan, et al. The Wenchuan Earthquake, Sichuan Province, China, and resulting geohazards[J]. Natural Hazards, 2009,56(1):19-36.