NUMERICAL SIMULATION OF POLLUTANT MIGRATION IN MULTI-LAYER MEDIA WATER-BEARING SYSTEM CONTAINING AQUITARD: A CASE STUDY OF TIEBUTIE POOL, DAQING CITY

The typical oil pollution in the saturated-unsaturated multi-layer media water-bearing system characteristic of Tiebutie Pool in Daqing City is chosen as the object of the present investigation. On the base of the analysis of the hydrogeological data, the permeability law of the aquitard linking the upper and lower water-bearing beds in the water-bearing system has been achieved by an experimental research. Then the numerical simulation model of the oil pollutant migration in this kind of water-bearing system is constructed by means of the numerical simulation technology. The numerical model thus established can be used to forecast the pollution trend of the pollutants and to propose the corresponding measures to control the pollution. In summary, this research result is of wide application in China where the sustainable development strategy is strongly upheld.