AN OPTIMIZATION METHOD FOR INTERPRETING ERT DATA BASED ON GROUNDWATER NUMERICAL MODELING

Geophysical non-uniqueness are everywhere. Faced with this situation we usually tend to combine geological data to calibrate the interpretation results. However, the information on geology and deep drilling are deficiency in remote areas, and field existing wells are often difficult to obtain information on lithology catalog, which will cause that the inversion results are difficult to interpret. Whether hydraulic characteristics of the water level and water quality information contained in the geological body can be used to assist the geophysical inversion? Based on this idea, a method for interpreting ERT data based on groundwater numerical modeling is provided in this article. In this article, Magneto-telluric method is a way to accomplish numerical simulation of geophysical forward and inversion. Firstly, by studying the known geological model and multiple geological models interpreted from ERT data, a set of groundwater numerical models can be set up. Then numerical simulation of groundwater flow and solute transport were conducted. Lastly, the optimal geological model can be obtained by comparing the result of numerical simulation of groundwater. Sensitivity analysis were also conducted to verify the method.