[1]HAN Ai-guo,HAN Kun-li,LIU Han-chao,et al.Discussion on the Possibility of Applying Peak Discharge Computation of Outburst Flood for Man-made Dams to Natural Dams[J].Research of Soil and Water Conservation,2007,14(06):234-237.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
14
Number of periods:
2007年06期
Page number:
234-237
Column:
Public date:
1900-01-01
- Title:
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Discussion on the Possibility of Applying Peak Discharge Computation of Outburst Flood for Man-made Dams to Natural Dams
- Author(s):
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HAN Ai-guo1, HAN Kun-li2, LIU Han-chao1, CHAI He-jun3
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1. National Laboratory of Geological Hazard Prevention and Geological Environment Protection, Chengdu University of Technology, Chengdu 610059, China;
2. Chengdu Institute of Survey and Investigation, Chengdu 610081, China;
3. Chongqing Communication Design & Research Institute, Chongqing 400067, China
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- Keywords:
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landslide damming of river; natural dam; outburst flood; peak discharge
- CLC:
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TV122.4
- DOI:
-
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- Abstract:
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Landslide damming of river is very common in mountainous regions, and the stability coefficients of natural dams are rather low, so they are prone to break under the induction of rainstorm, earthquake and other factors.The successive outburst flood will destroy all sorts of installations, even seriously threaten the safety of residents in downstream watercourse and banks, so it is of great significance to carry out outburst flood computation.Among those factors which affect the degree of flood disaster, peak discharge and flood peak are two important index.In this paper, peak discharge under the case of instantaneous break of natural dam is discussed taking advantage of computation method of man-made dam proposed by Prof.Xie Renzhi.Based on the actual breach condition of natural dam, the shape of break section is reasonably analyzed, the width of break section in computation formula is modified.The result is proved to be reliable by survey of dam breach flood in history.All these provide a new way for outburst flood calculation and also provide theoretical foundation for outburst flood disaster evaluation of natural dams.