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Improvement of AIT River Network Model for flood management : Chao Chet - Bang Yee Hon Irrigation Project, Chao Phraya Basin | |
Author | Nikom Kraitud |
Call Number | AIT Thesis no.WM-08-15 |
Subject(s) | Bang Yee Hon Irrigation Project, Thailand Floodplain management--Chao Phraya Basin (Thailand) |
Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management |
Publisher | Asian Institute of Technology |
Abstract | The River Network model, a combination of River model and Cell-Link model is capable of simulating high fluctuation flow in the rivers and slow fluctuating flow through the floodplains. In the Chao Phraya basin of Thailand, most of the irrigation projects are in floodplain areas. The developed model can be used to describe exchange of flow between floodplains under the operation of the regulators in the irrigation projects. The simulation of flow through the gate is considered for three types, which are free flow, submerged flow and fully open gate flow in both vertical sluice and radial gates. The developed model is tested with simple river network and satisfactory results are obtained compared to analytical computation. The developed model is applied to Chao Chet-Bang Yee Hon Irrigation Project. It is calibrated using the 2006 flood and model provides the good calibration results. The application of the developed model is used for improvement of flood retention management in different scenarios by adjusting the operations of regulators in the study area to control water depth. Each scenario is based on the rice varieties which are 3 month rice, 4 month rice and deep water rice. These varieties have difference in cultivation calendar, characteristics and tolerance for flood. Moreover, the effects of diversion of flood from Khlong Phraya Banlue to Phraya Banlue Irrigation Project which is downstream of the study area are incorporated with each scenario. The results of each scenario considered the damaged area of rice fields, the damage cost and the storage volume. The results show that each scenario can be used for minimizing the damage of rice fields in different magnitudes, which depended on tolerance for flood and crop calendar of each variety. The scenario which used deep water rice provided less damaged areas than other scenarios because this variety has high tolerance for flood. However, this rice provided lesser yield than other varieties. The scenario which used only 4 month rice provided smaller damaged areas than scenario which used both 3 and 4 month rice. The results show that the rice cultivation calendars of each rice variety are also significant for flood management. Additionally, the damage area, damage cost and storage volume relationships in each scenario can be used as a guideline for flood management of the study area and the whole Chao Phraya basin. |
Year | 2009 |
Type | Thesis |
School | School of Engineering and Technology (SET) |
Department | Department of Civil and Infrastucture Engineering (DCIE) |
Academic Program/FoS | Water Engineering and Management (WM) |
Chairperson(s) | Babel, Mukand S. ;Sutat Weesakul; |
Examination Committee(s) | Tawatchai Tingsanchali ;Vilas Nitivattananon; |
Scholarship Donor(s) | RTG Fellowship; |
Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2008 |