Combination of Hydrogeological Simulation and Geological Modeling: A Case Study of Conglomerate and Sandstone Distributed Site.

In general, some parameters assumption or model simplifications are needed for hydrogeological simulation by the limitations of computing loading and lack of survey data. In addition, the hydrogeological simulation result and other geological investigation information are usually displayed separately, which are not able to provide a comprehensive interpretation. However, geological modelling technique provides a solution for these limitations.

In this study, a conglomerate and sandstone distributed site in Taoyuan city, Taiwan, was applied for hydrogeological model establishment, flow simulation, and particle tracking calculation by FracMan software. Furthermore, regional investigation data including geological map, resistivity imaging profile (RIP), geological drilling, and hydrogeological simulation result, were applied to SKUA-GOCAD and integrated into a three-dimensional geological model, which provided comprehensive interpretations. At last, the lithology distribution model built by SKUA-GOCAD was applied to FracMan for another case simulation. This result was compared with the previous result simulated with simplified geological model, showing that how much geological modelling can help hydro-geological simulation.