STUDY ON THE GEOLOGICAL ENVIRONMENT OF SHENYANG CITY

This paper investigates and analyzes the surface subsidence of mined-out coalfield, groundwater pollution and heavy metal pollution of Shenyang City. The results show that the subsidence areas are 3.85-17.19km² in the coalfields in Southern Shenyang and 0.21-4.89km² in the north. The groundwater pollution becomes heavier from the piedmont to the plain in the study area. The eastern piedmont area is less polluted due to undeveloped industry. In the northern and southern regions, the groundwater is buried deeply less polluted sources, therefore the pollution is slight. In the west, where the industry is developed with more pollution sources, the groundwater is heavily polluted. Heavy metal pollution of soil is common in Shenyang, with Tiexi District as the center to form areal pollution. There is a high concentration zone of Se, Zn, Pb and Hg in the central city and Yuhong industrial area.