| Author | Abidin, Mohamed Roseli Bin Zainal |
| Call Number | AIT Thesis no. WA-84-14 |
| Subject(s) | Irrigation engineering
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | The fundamental condition for an efficient management of irrigation projects is an adequate operation of the supply system. The method of operating the system which has either a continuous or rotational supply is already considered during the design stages but often improvements are needed even after some years of operation of a system .
This study involved investigations on the operation of three different kinds of irrigation supply systems to lowland rice fields namely a reservoir, gravity flow and pumping where each of the three schemes are subdivided into two major aspects. They are t he technical aspects and the climatically conditions, On the technical aspects, the investigations are carried out by observing the operations a t the sites themselves, while probability concepts are applied in analyzing the effective rainfall, available discharges with view in optimizing the irrigation requirements, the determination of appropriate
cropping schedules and presaturation periods.
The results of the study revealed that the cropping schedules should not be based only on the rainfall distributions but also on the available flows .
For large scheme a further subdivision of presaturation periods is necessary .
The fully supply levels sensitivity analysis, water flowing patterns need to be determined. Further more , for pumping scheme , it is best to carry out the soil -water balance experiment so that the pumping activities can be minimized .
Finally intermittent irrigation needs to be practiced for schemes with insufficient supply even though they are designed for continuous flow and to set
a different water layer depth to achieve during the presaturation period as well as to find out the actual irrigation supply received by the rice fields. |
| Year | 1983 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Christoph, Ing. Fried |
| Examination Committee(s) | Rahman, Md. Ataur ; Prida Thimakorn
|
| Scholarship Donor(s) | Carl Duisberg-Gesellschaft e. V., Fed. Rep. of Germany |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1983 |