[1]WANG Chun-shan,BA Ren-ji,ZHOU Hong-fu,et al.Risk Evaluation of Debris Flows in Urban Area of Shimian County of Sichuan Province[J].Research of Soil and Water Conservation,2014,21(04):219-223,228.
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Risk Evaluation of Debris Flows in Urban Area of Shimian County of Sichuan Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 04
Page number:
219-223,228
Column:
Public date:
2014-08-28
- Title:
- Risk Evaluation of Debris Flows in Urban Area of Shimian County of Sichuan Province
- CLC:
- P642.23
- DOI:
- -
- Abstract:
- There are the frequent occurrences of debris flows in and the urban and surrounding areas of Shimian county. Based on detailed investigation of geological hazards in Shimian county, the 34 debris flows are evaluated with single gully debris flow risk assessment method by using a watershed as the segmentation borderline. The main influence factors were determined in terms of debris flow hazard and vulnerability evaluation. Then the hazard and vulnerability of the 34 debris flow gullies were calculated. The results show that the main hazard of debris flow of the study area is light risk, the second is moderate hazard. There is high vulnerability of debris flow bearing body. The main risk of debris flow is moderate, and there are certain distribution characteristics of risk. Finally, the debris flow risk distribution map is made through the analysis from dot to surface. And distribution range of each risk area is determined. The analysis results could provide reference bases for the geological disaster warning and forecasting during the flood season in this county.
- References:
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1900-01-01