期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2014
卷号：3
期号：2
页码：9016
出版社：S&S Publications
摘要：The principle objective of groundwater study under reference is to estimate the aquifer parameters. Hydraulicproperties of aquifers and associated layers have been determined by the pumping test which involves abstraction of waterin response to the stress applied due to pumping at a known discharge rate and observing aquifer′s hydraulic head withrespect to time. The nature, occurrence and availability of groundwater are directly related to relative thickness of sand andclay zones in the region. Sandy layers form the most significant aquifers in the study area. Good quality potable water isavailable from coarse grained deep sandy aquifers. On the basis of electrical logging interpretation, the groundwater issaline from ground level to 75.00 m mbgl. The zone from 73.00-78.00 m mbgl has been properly sealed by cement slurry.The well has been shrouded with 3-5 mm pea size gravel up to 75 m from bottom and clay was filled up to the groundsurface after proper development. During the well development process by an over-pumping unit, a pumping test wasconducted, which comprises of Step Drawdown Test (SDT) and Aquifer Performance Test (APT) to determine theperformance, efficiency of well and hydraulic properties of the aquifer respectively. The aquifer parameters evaluated aretransmissivity, hydraulic conductivity, storativity, leakage factor, leakance, hydraulic resistance and hydraulic diffusivity.The estimated data shows an appreciable significance regarding the estimation of aquifer properties. As far as thegroundwater quality is concerned the groundwater samples collected during SDT is found to be satisfactory, devoid ofprevious salinity problem which existed earlier.
关键词：Hydraulic properties; Step test; Specific capacity; Transmissivity; Well loss; Well efficiency; Leakance
