Author(s)

Xi Wang, Yule Yan

Corresponding Author

Yule Yan

ABSTRACT

Underground mining is the main way of coal mining, which will form underground goaf and lead to ground collapse. Land in subsidence area is usually repaired by filling method. The purpose of this study is to evaluate the pollution characteristics and ecological risks of Cr, Ni, Cu, Zn, As, Hg, Cd and Pb in the reconstructed soil in different methods; to assess the health risks of heavy metals in soil and groundwater respectively; and to determine the possible sources of ecological and human health risks in the area. The results can help to provide basic research data on the distribution of heavy metal pollution, migration law, prevention and treatment of the gangue filling reconstruction site.

KEYWORDS

Risk assessment, heavy metal pollution, coal mining