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Vol.52,
No.2,
PP.49-111
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| 1 |  | Engineering Design and Parametric Studies on Drainage Well and Horizontal Drains in Subsurface Drainage System for Large Landslide Stabilization | | | 2 | | Modelling the Performance and Stabilization Effect of Subsurface Drainage using Drainage Well for Large Landslide | | | 3 | | Evaluating Runoff Variation in the Zhuoshui Alluvial Fan Through the Decomposition of the Budyko Curve and Use of Climate Elasticity Methods | | | 4 | | UAV-Assisted Investigation of Vulnerable Sediment Areas at an Irrigation Water Inlet and Potential Disaster Analysis 52(2):100-111Wen-Hao Leu[1] Chien-Yuan Chen[2]* You-Ru Lu[2]* Corresponding Author. E-mail :  chienyuc@mail.ncyu.edu.tw Show preview |  PDF( 12.76MB ) | | UAV-Assisted Investigation of Vulnerable Sediment Areas at an Irrigation Water Inlet and Potential Disaster Analysis | 
Close | | Wen-Hao Leu[1] Chien-Yuan Chen[2]* You-Ru Lu[2] |
AbstractThe irrigation water inlet of the Qishan first-canal waterway is a central agricultural water resource
facility in the Qishan district of Kaohsiung City in southern Taiwan. The inlet was buried by masses of debris during Typhoon Morakot, which landed in Taiwan in 2009. In an attempt to reduce the effects of natural hazards on agricultural lands and hydraulic engineering, an unmanned aerial system (UAS) was used to investigate the stream water inlet of the Qishan first-canal waterway for potential sediments and analyze areas vulnerable to hazards. The results of the analysis revealed that the inlet was located downstream of the Qishan River and that numerous sediments from debris flows, riverbank landslides, and natural dams flowed downstream. The inlet can be buried in sediment and clogged by floodwood, and the hyperconcentration of sediments cause the water to be untakable. A designated water collection gallery for taking the subsurface water connecting to the waterway should be created to maintain the water volume during dry seasons.
Key Words: Qishan River, agricultural irrigation, sediment area, potential disaster analysis, UAS | 〔1〕Farm Irrigation Association of Kaohsiung, Kaohsiung City 813, Taiwan, R.O.C.
〔2〕Dept. of Civil and Water Resources Engineering, National Chiayi University, Chiayi City 60004, Taiwan, R.O.C. * Corresponding Author. E-mail : chienyuc@mail.ncyu.edu.tw | Received: 2020/05/21
Revised: 2020/12/14
Accepted: 2021/01/29
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| | | 5 | | Continuous Rainfall-Runoff Modeling Using HMS-SMA with Emphasis on the Different Calibration Scale | |
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