02637nam a2200253   450000500170000000800410001703500150005810000230007324500630009626000520015930000110021149000230022250001620024550200580040752015170046565000530198270000370203570000390207270000520211170000460216371000540220981000550226385600650231820260818093833.0160398         th                  eng    a.b100283651 aSiddique, Mohammad12aA digital model for the evaluation of Nakhon Luang aquifer  aBangkok :bAsian Institute of Technology,c1978  a158 p.1 aThesis ;vno. 1077  aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering of the Asian Institute of Technology, Bangkok, Thailand  aThesis (M.Eng.) - Asian Institute of Technology, 1978  aA two dimensional confined flow model was applied to simulate the unsteady behaviour of Nakhon Luang Aquifer. Historical water level maps were reproduced to a practical degree of hatchability when estimated plumage was impressed on the system with appropriate distribution. Fairly accurate  comparisons between model results and original maps were obtained on detailed basis in Metropolis Bangkok where better hydrogeologic control existed. The general piezometric pattern was, however, preserved on gross . basis.  The performance of Nakhon Luang Aquifer was then evaluated with the help of the model for four schemes of groundwater development. The schemes allowing for continued exploitation of this resource result in regional water level declines which are more serious in the Metropolis Bangkok.  With all reservation on other forms of future uses ~ , the MWWA pumpage plus  40% the pumpage for the planned housing units may alone result in a water level decline below the deepest pump setting in Bangkok by 1990. It is,  therefore, in the interest of MWWA and other groundwater consumers that MWWA should shift over to surface water alternative. In addition, the  housing units should also be provided with MWWA supply so that the anticipated industrial/private users may not aggravate the situation. Current well design practices should also take care of declining water levels in designing the length of surface casing which determines the lowest pump setting and hence the useful service life of wells. 0aAquifersxThailandxBangkokxMathematical models1 aArbhabhirama Anat, eChairperson1 aGupta, Ashim Das, eCo-Chairperson1 aSelvalingam, Selvadore, eExamination Committee0 aJerasak Premchit, eExamination Committee2 aGovernment of United Kingdom, eScholarship Donor2 aAsian Institute of Technology.tThesis ;vno. 1077  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B22864