Effects of Parameter Variations Generated by Pumping on LNAPL Migration in the Aquitard: An Analytical and Experimental Study
Yue Su, Yong Huang, Huan Shen, Xiaosong Dong, Xiaochang Sun, Zhimin Fu
TL;DR
This study examines how pumping affects the movement of contaminants in underground layers, showing that pumping influences migration patterns and deformation in aquitards.
Contribution
The study introduces a new analytical and experimental approach to understand LNAPL migration under dynamic pumping conditions in aquitards.
Findings
LNAPL migration in aquitards is directed toward pumping wells and overlying aquifers during pumping.
Higher pore water pressure and consolidation deformation near pumping wells slow LNAPL migration.
Pumping rate significantly affects groundwater flow and contaminant movement in aquitards.
Abstract
The parameter variations in the aquitard have an important influence on the migration laws of contaminants in the aquitard. In order to study the influence of dynamic changes in parameters during pumping on the migration laws of Light Non-aqueous Phase Liquid (LNAPL) in the aquitard, the one-dimensional consolidation and groundwater flow equations for the aquitard were employed to derive the governing equations for the migration of LNAPL in the aquitard. A self-designed experimental platform was developed to investigate the effects of the pore water pressure, consolidation deformation, and pumping rate on LNAPL migration during pumping. The laboratory experimental results indicated that during pumping, the migration behavior of LNAPL in the aquitard typically exhibited a trend toward the pumping well and the overlying aquifer. The closer to the pumping well, the greater the change in…
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Taxonomy
TopicsGroundwater flow and contamination studies · Hydraulic Fracturing and Reservoir Analysis · Seismic Imaging and Inversion Techniques