| Author | Somchai Sweggulchol |
| Call Number | AIT Thesis no. WA-85-27 |
| Subject(s) | Water, Underground--Mathematical models
|
| 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 optimum pumping pattern in zone II of Sukhothai groundwater Irrigation Project in relation to the crop water requirement and limitation on lowering of groundwater level has been assessed basing on the available hydrogeologic and agricultural data. The hydraulic characteristics of the aquifer namely transmissivity and storability and their distribution over the project area have been determined analyzing pumping test data and using Krigging model spatial approximation. Standard procedure (Modified Penman) has been used to estimate the irrigation water requirement. The optimization model based on linear programming has been used to allocate the maximum pumping time per day for each kind for each month subjected to three constraints. The first one is a net project water requirements depending on the kind of crops, cropping area, and climatic conditions. The second is the drawdown caused by a cyclic pumping: an alternating fixed periods of pumping with fixed periods of recovery. The third is the residual drawdown constraint which is the drawdown remaining from the effect of pumping at the end of the rest period. The optimum pumping pattern schedule, found therefrom, satisfies the crop water requirement for every month. For each month, this optimal pumping pattern can supply water to meet crop water requirements of the required area. Considering the whole period of planting, command areas for each well to respective crop growing are indicated in Table 5.2. |
| Year | 1984 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Water Resources Research Engineering (WA) |
| Chairperson(s) | Gupta, Ashim Das |
| Examination Committee(s) | Prida Thimakorn ;Yoganarasimhan, G. N. |
| Scholarship Donor(s) | Federal Republic of Germany (CDG) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1984 |