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Vol.44,
No.2,
PP.97-190
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| 1 |  | The Effects of the Cover Ratio of Erosion Control Geosynthetic Mesh on Soil Losses along Hillslopes | | | 2 | | The Factors of Evacuation Decisions for Local Governments and Inhabitants in Debris-Flow Potential Areas | | | 3 | | Characteristic Analysis of Rainfall-induced Landslide Potential in Western Taiwan | | | 4 | | Numerical Analysis of Slope Stability at the 115.9k Point of the Su-Hua Highway | | | 5 | | 3-D Mechanical Conversion Model for the Soil-Root System of the Predominant Plant in the Shi-Men Watershed | | | 6 | | Analysis of Environmental Factors and Landslide Susceptibility Prediction for the Watershed Landslides | | | 7 | | Soil Water Index Applied as a Debris Flow Warning- Reference Based on a Tank Model 44(2):131-143Su-Chin Chen[1] Chiao-Wen Tsai [1]* Chen-Yu Chen[2] Mei-Chen Chen[2]* Corresponding Author. E-mail :  d099042001@mail.nchu.edu.tw Show preview |  PDF( 7.11MB ) | | Soil Water Index Applied as a Debris Flow Warning- Reference Based on a Tank Model | 
Close | | Su-Chin Chen[1] Chiao-Wen Tsai [1]* Chen-Yu Chen[2] Mei-Chen Chen[2] |
AbstractA tank model is a conceptual model which simulates the moving behavior of water in the soil layers, including runoff, infiltration and percolation. The water depths of three tanks,representing surface, middle and deeper soil layers, respectively, were summed up as a soil water index
(SWI). This study analyzes the debris flow cases in Eastern Taiwan based on the tank model and the current warning threshold value for debris flow. Results showed SWI has a linear relationship with the depth in the second tank, i.e. the soil moisture in the middle soil layer is closely related to the occurrence of debris flow cases. In addition, debris flow occurred when SWI>107mm. This finding can be used as a warning for debris flow in Eastern Taiwan.
Key Words : Tank model, soil water index, debris flow disaster, warning threshold value. | Dept. of Soil and Water Conservation, National Chung Hsing University, Taichung 402, Taiwan, R.O.C.
Soil and Water Conservation Bureau, Council of Agriculture, Executive Yuan, Taiwan, R.O.C. * Corresponding Author. E-mail : d099042001@mail.nchu.edu.tw | Received: 2012/05/28
Revised: 2012/08/31
Accepted: 2013/03/04
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| | | 8 | | The Monitoring and Flow Dynamics of Gravelly Debris Flows | |
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