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Vol.49, No.4, PP.199-261
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1
Evaluating the Efficiency of Subsurface Drainage Systems during Large Landslides
49(4):199-213
Der-Guey Lin[1]* Kuo-Ching Chang[1] Eugene Choo[1] Miau-Bin Su[2]
* Corresponding Author. E-mail : dglin@dragon.nchu.edu.tw
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2
Evaluating the Efficiency of Stability Remediation Measures for the T16-Tower Pier Slope of the Taipei Maokong Tramway
49(4):214-232
Der-Guey Lin[1] Kuo-Ching Chang[1] Jui-Ching Chou[2]*
* Corresponding Author. E-mail : jccchou@nchu.edu.tw
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3
Feasibility Assessment of Heavy Rainfall Forecasting using Global Positioning System–Derived Zenith Total Delays
49(4):233-242
Tzu-Pang Tseng[1] Yu-Shen Hsiao[2]* Li-Chun Tseng[2]
* Corresponding Author. E-mail : yshsiao@nchu.edu.tw
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4
Establishing a Hillslope Failure Susceptibility Model Based on the Soil Water Index and Frequency Ratio Method
49(4):243-253
Yi-Jun Liu Su-Chin Chen*
* Corresponding Author. E-mail : scchen@nchu.edu.tw
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Establishing a Hillslope Failure Susceptibility Model Based on the Soil Water Index and Frequency Ratio Method
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Yi-Jun Liu Su-Chin Chen*

Abstract
This study established a hillslope failure susceptibility model for sediment disasters by combining the soil water index (SWI) and landslide susceptibility values to formulate a basis for warning release. The sum of the
rainfall depth in the three tank of tank model can be considered as the rainfall retention depth in soil layer. This study collected data of disaster cases and used them to establish lines of disaster coverage. The results indicated that the SWI alert value corresponded to the line of disaster coverage and the hydrological risk was related to disaster coverage.Furthermore, a landslide susceptibility model was constructed involving the frequency ratio method, which is based on landslide factors. The physiographic hazard level was obtained and normalized according to the landslide susceptibility
value. This study established a hillslope failure susceptibility model for sediment disasters by combining hydrological risk and frequency ratio based physiographic hazard levels.
Key Words: Tank model, Soil water index, Landslide susceptibility analysis, Frequency ratio method, Hillslope
failure susceptibility value.
Department of Soil and Water Conservation, National Chung Hsing University, Taichng 402, Taiwan, R.O.C.
* Corresponding Author. E-mail : scchen@nchu.edu.tw
Received: 2018/08/06
Revised: 2018/10/04
Accepted: 2018/10/19
5
The Mobile Bed Flume Experiment of Single Woody Debris Initial Entrainment
49(4):254-261
Min-Chih Liang Su-Chin Chen*
* Corresponding Author. E-mail : scchen@nchu.edu.tw
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