Determination of the rate and volume of leakage using the slopes of time-drawdown data |
| |
| Authors: | Isam E Amin |
| |
| Institution: | (1) Department of Geological and Environmental Sciences, Youngstown State University, Youngstown, OH 44555, USA |
| |
| Abstract: | Quantification of leakage is very important in the selection and design of the remediation systems of leaky aquifers that receive contaminated leakage. This is an approach for the calculation of leakage using only two slopes of time-drawdown data. These slopes represent before and after the start of leakage, and are applied to four examples. Results generally agree with those determined by the Hantush approach. Comparison of the two approaches, however, shows that the Hantush approach quantifies leakage using three aquifer parameters (transmissivity, storativity, and leakage factor), the value of which depend on the pumping test method used; it assumes constant hydraulic head in the aquifer supplying leakage, which may not be valid under field conditions; and it ignores differences between the viscosities of the leakage water and the aquifer water, which influence the leakage rate. The proposed approach is free from all three limitations. |
| |
| Keywords: | Leakage rate Leakage volume Leaky aquifers Slope of time-drawdown data |
| 本文献已被 SpringerLink 等数据库收录！ |
|
