Application of multi-methods in the calculation and validation of aquifer parameters in Longkeng water source area in So
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ORIGINAL PAPER
Application of multi-methods in the calculation and validation of aquifer parameters in Longkeng water source area in Songyuan City, China Zhang Fang & Zhe Ma & Chang-lai Xiao & Xiu-juan Liang
Received: 4 September 2013 / Accepted: 17 December 2013 # Saudi Society for Geosciences 2014
Abstract To obtain more accurate hydrogeological parameters of an aquifer, multi-methods are applied in this paper. Taking the Longkeng water source in Songyuan City as an example, a pumping test, as well as the groundwater dynamical, spring discharge inverse, and groundwater hydrochemical kinetics method are first applied to determine the hydrogeological parameters of the aquifer in this area. Groundwater numerical simulating models are then built using Groundwater Modeling System software to identify and certify the parameters. According to the all-time waterlevel fitting curve of long-term observation wells, the relative error of simulated water level is less than 6 %. According to these methods, the parameters for the whole region are obtained, and these parameters are more accurate than those obtained by using pumping tests alone. Keywords Hydrogeological parameters . Pumping test . Groundwater dynamical analysis . Spring discharge inverse method . Hydrochemical kinetics . Numerical simulation
Introduction Aquifer parameters mainly include hydraulic conductivity (K), transmissivity (T), specific yield (μ), specific storage (μ∗), and influence radius (R). Hydraulic conductivity (K) and specific yield (μ) are the key properties used to characterize aquifer formation. The determination methods for aquifer parameters are mainly pumping test (Nie et al. 2009), water pressure test, water injection test, tracer test, indoor Z. Fang (*) : Z. Ma : C.
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