HR: 0830h
AN: H31B-0448    [PDF]
TI: Push-Pull Test with Resting Phase as a Method to Estimate Hydraulic Parameters
AU: * Hwang, H
EM: napls94@snu.ac.kr
AF: Seoul National University, School of Earth and Environmental Science Lab of Hydrogeological Env., Seoul, 151-747 Korea, Republic of
AU: Lee, K
EM: kklee@snu.ac.kr
AF: Seoul National University, School of Earth and Environmental Science Lab of Hydrogeological Env., Seoul, 151-747 Korea, Republic of
AB: Groundwater velocity estimate from a drift pump back teset change depending on the length of drift time. Generally, smaller velocity estimates are obtained when the drift time increases. Push pull test is an injection and withdrawal test and the dispersivity estimates from the push pull test without drift time are usually smaller than those from the radially convergent-flow tracer test. In order to resolve these differences, we performed push pull tests for various resting phases. An analytical solution and moment value are obtained to analyze the push-pull test data with resting phases. Tracer tests with bromide ion as a tracer were performed under various resting conditions. The test results are compared with those obtained from natural-gradient and convergent-flow tracer experiments in bench and field scales.
DE: 1832 Groundwater transport
SC: Hydrology [H]
MN: 2003 Fall Meeting