Study On The Hydrogeological Characteristics Of An Industrial Park In Fujian Coastal Area

Seawater intrusion is currently the most common hydrology geological disasters in the coastal areas. On the basis of analyzing the hydrogeological conditions in the study area systematically, it is of great significance for our country’s environmental protection, industrial and urban construction to use numerical simulation software, predict quantitatively seawater intrusion in the hydrological geological disasters, and use the research results to create risk-averse.On the basis of collecting the background information of the natural geographic and geological background of petrochemical base in Gulei, Zhangzhou, we set 28 field geological drilling, and studied the hydrogeological conditions in the study area with the methods like groundwater dynamic observation, groundwater chemical analysis and so on. And on the basis of analyzing the hydrogeological conditions in the study area, we established the 3 d model in the study area with FEFLOW software, identified and corrected the model through dynamic observation data of underground water level and water quality. The model identified simulated the seawater intrusion of rainfall infiltration amount for the current 80%, 60%, 30%.The research results show that the type of groundwater in the study area is mainly for the loose rock pore water. Precipitation is the main groundwater replenishment source, Overall characteristics of the groundwater flow field is from north to south is a north-south divide of groundwater, groundwater flow mainly from the watershed flow spread out. At present, local groundwater in the study area have been rendered the characteristics of mild seawater intrusion, but with the development of project construction in the study area, the ground of hardening area will gradually expand, the rainfall infiltration decreases of seawater intrusion situation will intensify.This study provides a scientific basis for the environmental impact assessment of the environmental impact assessment of the follow-up project construction in the study area, and puts forward the corresponding prevention and control basis and Countermeasures for the possible water intrusion.