[1]WANG Nian-qin,XUE Yao-qiong,LI Shao-bing,et al.Debris Flow Lability Comprehensive Evaluation Model on Rough Set Theory[J].Research of Soil and Water Conservation,2014,21(03):246-250.
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Debris Flow Lability Comprehensive Evaluation Model on Rough Set Theory
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 03
Page number:
246-250
Column:
Public date:
2014-06-28
- Title:
- Debris Flow Lability Comprehensive Evaluation Model on Rough Set Theory
- CLC:
- P642.23
- DOI:
- -
- Abstract:
- The judgment of debris flow disaster liability is the important part of the debris flow disaster evaluation, and fast and accurate evaluation has important guiding significance of human engineering activity. As all as we know, topography and geomorphology, geological and hydrological conditions play a decisive role in the debris flow disaster, and are the main influence factors of debris flow lability. Based on mechanism of debris flow disasters, the debris flow lability can be divided into high lability, middle lability, low lability and not lability. Based on the full consideration of the contributions on debris flow lability factors, the factors’ determine standard was given, the relative important degree of each evaluation indexes was obtained according to the rough set theory, then based on expert experience method a subjective weight was determined, the comprehensive weight was determine by combining with the relative important degree and subjective weight, then, a new kind of debris flow lability comprehensive evaluation model of multilevel fuzzy assessment was set up based on the theory and method of fuzzy mathematics on multilevel fuzzy assessment, 5 debris flow gullies of Fengxian, Shaanxi were taken as the example to verify the model. The results show that the debris flow gully liability in 5 gullies follows the order of Wujiagou, Santaishan watershed, Hougou catchment, Yintongliang catchment, Sigou catchment. The results are in good agreement with the actual situation.
- References:
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