Theory of Erosion Control
| Numbering Code | U-AGR05 3E179 LJ80 | Year/Term | 2022 ・ Second semester | |
|---|---|---|---|---|
| Number of Credits | 2 | Course Type | Lecture | |
| Target Year | 3rd year students | Target Student | ||
| Language | Japanese | Day/Period | Fri.1 | |
| Instructor name |
NAKATANI KANA (Graduate School of Agriculture Assistant Professor) KOSUGI KENICHIROU (Graduate School of Agriculture Professor) |
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| Outline and Purpose of the Course | Lectures will be given on sediment transport and characteristics of mountainous streams, focusing on disaster prevention works to safeguard against sediment disasters, such as sabo engineering. | |||
| Course Goals | The primary goal is to study basic theories and actual situations related to sediment transport and sediment disasters in mountains. The final goal is to consider and propose effective countermeasures for sabo engineering. | |||
| Schedule and Contents |
1. Sediment disasters in mountains and sabo engineering （outline of the course）(Kosugi, Nakatani) 2. Recent sediment disasters in Japan, 2017 Northern Kyushu Direct Heavy Rain (Nakatani) 3. Recent sediment disasters in Japan, 2016 Kumamoto Earthquake (Nakatani) 4. Recent sediment disasters in Japan, 2014 Hiroshima City (Nakatani) 5. Classification of sediment transport in mountainous streams（bed load, suspended load, debris flow, sediment sheet flow）(Nakatani) 6. Basic theories and simulation models for sediment transport in mountainous streams (Nakatani) 7. Woody debris from mountainous streams (disasters, supplying mechanisms and countermeasures) (Nakatani) 8. Observation of sediment and woody debris from mountainous streams(Nakatani) 9. Multiple sediment disasters: landslide dams (mechanism, impact predictions, countermeasures) (Nakatani) 10. Sediment disasters related to volcanic eruptions (mechanism, impact predictions, countermeasures) (Nakatani) 11. Structural countermeasures against sediment disasters: closed type sabo dams(Nakatani) 12. Structural countermeasures against sediment disasters: open type sabo dams and woody debris capturing structures(Nakatani) 13. Non-structural countermeasures against sediment disasters: hazard mapping and evacuation works(Nakatani) 14. Measures considering land-use and social needs, with structural and non- structural countermeasures (Nakatani) 15. Sediment transport and riverbed variation from mountainous area, river to sea and feedback of the course (Nakatani) Final examination |
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| Evaluation Methods and Policy |
Evaluation will be based on the final examination (40%) and class performance (60%). Class performance consists of attendance and grades earned in short reports assigned for every class and one longer report assignment during the course. Refer to the current year's "Guide to Degree Programs" for evaluation attainment levels. |
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| Course Requirements | Students should take Environmental Geoscience A (Geosphere Disaster Science). | |||
| Study outside of Class (preparation and review) | No particular preparation is necessary, but it will help in understanding the course if you actively collect information about sediment disasters (including landslides, debris flow, and volcanic eruptions) and disaster prevention works in Japan and other countries. | |||
| Textbooks | Textbooks/References | Will not be used. Handouts will be distributed during the lectures. | ||
| References, etc. | 丸谷知己［編］ 『砂防学』 (朝倉書店,2020) ISBN:978-4-254-47053-6 | |||
