| Author | Aryal, Santosh Kumar |
| Call Number | AIT Thesis no.WA-87-6 |
| Subject(s) | Aquifers--Simulation methods
|
| 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 need of finding out an optimal pumping and recharge policy for
an over exploited aquifer system is widely felt in order to manage the
aquifer so that the resources can be utilized for a larger time period
and to prevent the undesired effects of lowering of the piezometric surface .
Two linear programming optimization models were developed utilizing
the simulation model to find out the optimum pumping and recharge patterns. In order to combine the simulation model explicitly with t he optimization models the unit response functions ( discrete kernels ) were
generated using well known iterative alternate direction implicit (!ADI )
method. The first optimization mode l maximizes the benefit of water
pumped minus the cost of artificial groundwater recharge. A sensitivity
analysis was performed varying the cost of artificial groundwater recharge and amount of recharge water availability. The second model was
in the form of minimizing the maximum drawdown over the simulation domain
at the end of a planning horizon. As a sensitivity analysis this model
was with four schemes. Both the models were subjected t o drawdown and
recourse availability constraints .
The optimum pumping and recharge policies were obtained from both
of the models. The results obtained from the first model was based upon
the hydrogeologic and economic considerations. By sensitivity analysis
it was found that the economic considerations does not have any effect
on the pumping and recharge policies unless the recharge availability is
enough to meet t he drawdown constraints. The results obtained from the
second model also indicated the dependence of decision variables on
hydrogeologic characteristics such as transmissivity of the aquifer, location of boundaries and location of Wells. |
| Year | 1987 |
| 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 ;Paudyal, Guna N.
|
| Examination Committee(s) | Bogardi, Janos J.
|
| Scholarship Donor(s) | The Government of France |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1987 |