Navigation: »No topics above this level«
ANSDIMAT provides analytical interpretation of aquifer tests for the following hydrogeological conceptual models:
1. Confined aquifer (fully penetrating well)
2. Point source (confined aquifer: partially penetrating well)
3. Line source (confined aquifer: partially penetrating well)
11. Sloping aquifer
15. Slug test
Most models account for the role of lateral and profile boundaries.
The following test stages/periods can be analyzed and interpreted for all conceptual models:
1) pumping (or injection) test,
2) recovery test:
2.1) the change in the level is counted from the beginning of the test (from the initial /static/ water level),
2.2) the change in the level is counted from the beginning of the recovery (from the dynamic water level at the moment when the pumping /injection/ is ceased),
2.3) recovery is analyzed similarly to pumping at a constant rate: the drawdown period is neglected,
3) analysis of the whole test period including pumping /injection/ and recovery stages (drawdown is counted from the initial /static/ water level).
The latter is an analogous to interpreting a pumping test at a variable rate, where the pumping rate during the last step is zero.
Recovery is considered most accurately for a confined aquifer conceptual models. For other conceptual models recovery interpretation is made only by fitting parameters in solving direct or inverse problem. For 2.1 for recovery calculation function (f) is:
and for 2.2 it is: