Effect of pumping from fresh water lens | |
| Author | Gaikwad, Vilas P. |
| Call Number | AIT Thesis no. WA-85-6 |
| Subject(s) | Water, Underground Saltwater Encroachment |
| 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 | A simplified model based on Dupuit's and Ghyben-Herzberg's (G-H) assumption to approximate the equilibrium steady shape of fresh salt water interface in unconfined aquifer of finite depth under the natural flow as well as pumping condition is developed. Length of sea water intrusion, interface profile along with the length of horizontal as well as vertical outflow face, quantity of fresh water flow to going to the sea, additional length of intrusion due to pumping can be computed. A vertical Hele-Shaw model is designed and fabricated to test the validity and applicability of the approximate mathematical model based on Dupuit's and G-H assumption. Experiments are carried out for different operating conditions of horizontal wells in the fresh water lens. Dimensionless plots are constructed to show the experimental and theoretical fresh salt water Interface and free water surface as well. The experimental results are conclusive in proving the validity and applicability of the developed simplified model. Another simplified mathematical model based on the Kashef's method of hydraulic forces is developed to delineate the contour maps of salt water mounds produced due to multiple well pumping in coastal unconfined groundwater basins of finite depth. This simplified model is recommended for further studies. |
| 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) | Christoph, Ing. Fried ; Rahman, Md. Ataur |
| Scholarship Donor(s) | Canadian International Development Agency |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1984 |