Investigation Of Contaminant Migration During The Related Function Between Salt Water And Groundwater On The Artificial Shore

During China's accelerating industrialization and urbanization process, the coastal cities develop so fast, which needs more space for development. In order to meet the needs of regional economic development, a wave of land reclamation is carrying out in the coastal cities. The artificial shore, resulted from land reclamation, leads to an increasing proportion of artificial shoreline, the change of original natural landscape and even the damage of the balance between the sea water and groundwater. The above problems have aroused many serious problems such as seawater intrusion, the marine pollution resulting from the penetration of land-based pollution, etc. Hence, there are important practical significance and scientific significance to study on the migration and transformation of pollutants of the artificial shore's salt water interface.The paper analyzed the hydro-geological structure of Harbor Industrial Zone of Tianjin and confirmed the structure, function and output and output characteristics of this zone's groundwater system based on the hydro-geological data and field verification of Harbor Industrial Zone of Tianjin. After analyzing relevant data of Harbor Industrial Zone of Tianjin, we built the physical simulator in the laboratory and filled the simulator with soil and water to conduct the real simulation of the artificial shore of Tianjin. After finishing the construction of the device, we confirmed the hydro-geological parameters of this device and established its physical model. Based on the physical model, the water flow theory of groundwater dynamics, hydrogeology was applied to construct of the groundwater flow equation. Finally, we explored the related function between salt water and groundwater and migration of contaminants through monitoring chloride and total nitrogen. The final achievement of this study will provide important theoretical basis for the management and control of the pollution of artificial shore, and will be beneficial to build the artificial eco-shore.