Groundwater Flow Modeling and Suggestion for Pumping Rate Restriction around K-1 Oil Stockpiling Base with Geological Consideration

This study aimed at simulating several responses to stresses caused by the ground water level variations around the K-1 oil stockpile. For this simulation, we considered the characteristic hydrogeological condition including the special occurrence of long and thick acidic dyke, which is regarded as the main geological structure dominating the ground water flow system at this study area. We activated twenty-four imaginary wells which are located in northern and southern area around central K-1 site. Each neighboring distance is altogether 300 m and whole distance between K-1 site and remote wells is 1,200 m. Through the modeling, we operated the long-term and continuous pumping tests and finally categorized five zones based on maximum pumping rates for the imaginary wells; zone I within 300 meter distance from K-1 site with a pumping rate of 50 ; zone II between 300 to 600 meter distance from K-1 site with a pumping rate of 75 ; zone III between 600 to 900 meter distance from K-1 site with 150 ; zone IV between 900 to 1,200 meter distance from K-1 site with 300 ; and zone V of acidic dyke area. At zone V, especially because of their possibility of high transmissivity for groundwater flow, it is necessary to control and restrict groundwater discharge.