›› 2012, Vol. 33 ›› Issue (3): 835-840.

• Geotechnical Engineering • Previous Articles     Next Articles

Research on early warning of debris flow based on efficacy coefficient method

MENG Fan-qi1, 2, LI Guang-jie1, WANG Qing-bing2, QIN Sheng-wu1, ZHAO Hai-qing3, JIN Xin1, 4   

  1. 1. College of Construction Engineering, Jilin University, Changchun 130026, China; 2. Shandong Monitoring Center of Geological Environment, Jinan 250014, China; 3. Shenyang Institute of Geology and Mineral Resources, Shenyang 110033, China; 4. Liaoning Monitoring Center of Geological Environment, Shenyang 110033, China
  • Received:2010-12-07 Online:2012-03-10 Published:2012-03-12

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Abstract: For great destructive debris flow, predicting the likelihood of its early warning is an important means of disaster prevention and mitigation, as well as scholars focus on the key issues. Based on the principle of efficacy coefficient method, analyzing the meteorological and geological environmental factors synthetically; evaluation factors such as hill slope, relative height, vegetation cover, along the groove loose material reserves, 5 d cumulative rainfall, maximum rainfall intensity per hour, and intraday rainfall are selected. Using the improved analytic hierarchy process to calculate the weight coefficients of evaluation factors, a early warning of debris flow prediction model is established. Taking an early warning of debris flow in Xiuyan for example, the model is tested to predict the results which reflect the actual situation better. The debris flow early warning model has higher reliability and practicability, and it can provide new ideas and methods for early warning of debris flow prediction.

Key words: debris flow, efficacy coefficient method, improved analytic hierarchy process, early warning model

CLC Number: 

  • TV 144
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