| Author | De Mel, Widanalage Shiran Randewa |
| Call Number | AIT Thesis no.WA-82-5 |
| Subject(s) | Aquifers
|
| 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 | Groundwater production in Bangkok has steadily increased from 8 ,000 m3/day in 1954 to more than one million m /day in 1979. As a result of this heavy
utilization, land subsidence and saltwater intrusion has taken place. In some areas, land subsidence and saltwater intrusion has taken place. In the ground elevation in Bangkok ranges from 0.5m to 2m above MSL . Salt intrusion has taken place in several sections of the aquifers causing freshwater wells to be abandoned; by 1983 the estimated loss of available pumping facility due to salt
intrusion is 83,000 m3/day. The land subsidence problem has been investigated and preventative measures to be taken are under consideration. However, investigations to salt intrusion problem are very limited. These studies reveal
that the salt intrusion is not only from the sea but al so due to vertical leakage from aquifers above. The present study formulates a multiaquifer solute transport model which takes into account the interaction between aquifers. A multiaquifer hydrodynamic model is coupled with the solute transport model to investigate the causes of salt intrusion in Bangkok and Phra Pradaeng aquifers considering
intrusion caused by sea, by seepage from Tha Chin and Chao Phraya rivers and by connate water bodies. It appears that seeping of saltwater from the two rivers is not the only cause of contamination in the aquifers. This study concludes that the salt intrusion in aquifers is predominantly from the connate water bodies entrapped in both the aquifers and vertical leakage, particularly for Phra Pradaeng aquifer from overlying Bangkok aquifer, is found to be significant in areas where the two layers interconnect as evident from detailed geological
investigation. |
| Year | 1982 |
| 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) | Gupta, Ashim Das
|
| Examination Committee(s) | Suphat Vongvisessomjai. ; Christoph, Ing. Fried
|
| Scholarship Donor(s) | Government of Switzerland |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1982 |