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Evaluation of Runoff Reducing Function of Traditional Paddy Field

Takesue, Mizuki LU (2023) In TVVR 5000 VVRM01 20231
Division of Water Resources Engineering
Abstract
As there is an increasing trend in the large-scale flood disaster caused by short-duration rainfall in Japan, the discussion of the disaster prevention is renewed into “River Basin Disaster Resilience and Sustainability by All” recently. Given the enormous impact of maximum runoff on flood damage, this study mainly focuses on the peak-cutting and detention effect in the agricultural area where farmland consolidation has been considered to be affecting on the runoff. The research is composed of field survey and modelling. The aim of this study is to compare the runoff reducing function between consolidated and unconsolidated area(i.e. traditional paddy field) and to create the model based on the data observed in field survey. According to... (More)
As there is an increasing trend in the large-scale flood disaster caused by short-duration rainfall in Japan, the discussion of the disaster prevention is renewed into “River Basin Disaster Resilience and Sustainability by All” recently. Given the enormous impact of maximum runoff on flood damage, this study mainly focuses on the peak-cutting and detention effect in the agricultural area where farmland consolidation has been considered to be affecting on the runoff. The research is composed of field survey and modelling. The aim of this study is to compare the runoff reducing function between consolidated and unconsolidated area(i.e. traditional paddy field) and to create the model based on the data observed in field survey. According to the results of the field survey, the traditional paddy field has a greater peak-cutting and detention effect. The reason for these effect can be attributed to the large infiltration effect, length and the geometrical condition of water channel network and high rougness of the channels. During the modelling process, the model was developed until the peak and approximate flow rates could be detected. However, modifications are required for a more realistic simulation, particularly with regard to the geometrical data of the channels. (Less)
Please use this url to cite or link to this publication:
author
Takesue, Mizuki LU
supervisor
organization
course
VVRM01 20231
year
type
H2 - Master's Degree (Two Years)
subject
keywords
Flood, River Basin Disaster Resilience and Sustainability by All, Peak-cutting, Detention effect, Unsteady flow analysis
publication/series
TVVR 5000
report number
TVVR23/5002
ISSN
1101-9824
language
English
additional info
Examiner: Magnus Larson
id
9114505
date added to LUP
2023-05-15 13:38:04
date last changed
2023-05-15 13:38:04
@misc{9114505,
  abstract     = {{As there is an increasing trend in the large-scale flood disaster caused by short-duration rainfall in Japan, the discussion of the disaster prevention is renewed into “River Basin Disaster Resilience and Sustainability by All” recently. Given the enormous impact of maximum runoff on flood damage, this study mainly focuses on the peak-cutting and detention effect in the agricultural area where farmland consolidation has been considered to be affecting on the runoff. The research is composed of field survey and modelling. The aim of this study is to compare the runoff reducing function between consolidated and unconsolidated area(i.e. traditional paddy field) and to create the model based on the data observed in field survey. According to the results of the field survey, the traditional paddy field has a greater peak-cutting and detention effect. The reason for these effect can be attributed to the large infiltration effect, length and the geometrical condition of water channel network and high rougness of the channels. During the modelling process, the model was developed until the peak and approximate flow rates could be detected. However, modifications are required for a more realistic simulation, particularly with regard to the geometrical data of the channels.}},
  author       = {{Takesue, Mizuki}},
  issn         = {{1101-9824}},
  language     = {{eng}},
  note         = {{Student Paper}},
  series       = {{TVVR 5000}},
  title        = {{Evaluation of Runoff Reducing Function of Traditional Paddy Field}},
  year         = {{2023}},
}