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A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump
Published on: June 1, 2022
Evaluation of combined direct-push methods used for aquifer model generation
Ralf Köber1, Götz Hornbruch, Carsten Leven
1University of Kiel, Institute of Geosciences, Olshausenstrasse 40, D-24098 Kiel, Germany. rkoeber@gpi.uni-kiel.de
Ground Water
|April 4, 2009
Summary
Direct-push (DP) technology offers high-resolution aquifer characterization for contaminant transport modeling. Combining DP slug tests, injection logging, and profiling tools improves hydraulic conductivity estimates and remediation designs in complex aquifers.
Area of Science:
- Hydrogeology
- Environmental Engineering
- Geophysical Methods
Background:
- Established methods lack spatial resolution for advanced contaminant transport modeling.
- Direct-push (DP) technology offers rapid hydrogeological characterization without wells.
- Shallow unconsolidated aquifers require detailed data for effective remediation.
Purpose of the Study:
- To evaluate the effectiveness of combined direct-push (DP) hydraulic investigation tools.
- To assess the suitability of DP data for developing sophisticated numerical contaminant transport models.
- To improve the accuracy of hydraulic conductivity estimations in complex aquifer systems.
Main Methods:
- Combined application of DP slug tests, DP injection logging, and the hydraulic profiling tool.
- Investigation of a contaminated German refinery site.
- Setup of hydraulic aquifer models and evaluation via tracer transport simulations.
- Comparison of simulated and measured tracer breakthroughs under natural gradient conditions.
Main Results:
- Model scenarios integrating all DP tools accurately reproduced measured tracer breakthroughs.
- Using DP slug tests alone resulted in higher deviations in hydraulic conductivity estimates.
- Combined DP approaches provide realistic aquifer models suitable for remediation optimization.
- The integrated DP investigation approach demonstrated suitability despite potential technical limitations.
Conclusions:
- Combined DP hydraulic investigation tools provide essential high-resolution data for contaminant transport modeling.
- Integrated DP approaches enhance the accuracy of aquifer characterization and hydraulic conductivity estimation.
- This methodology aids in optimizing remediation strategies and understanding flow regimes in complex aquifers.
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