Study on soil heavy metals pollution in daliuta coal mine area

The coal output per year in Daliuta, Hugitu and Halagou coal mines exceeds 3000 thousand tons, and moreover still numerous local and individual coal mine, the coal resources development under the weak ecology had led to many worse effects on geological environment, water environment and ecological environment. The essay stresses how coal development affects the soil heavy metal pollution by collecting and analysis of 43 surface earth samples. The results proves that contents of Hg,Pb,Cd,Cr,Cu, Zn and Ni 8 kinds of heavy metal element in soil is less than those of environmental quality standard for soils level 2, and there are larger environment content. in the soil. Compared with the values of near district soil backdrop,other elements in earth sample except for Ni exist accumulates super standard pollution in different degrees. Hg is the most main accumulate pollution element in the research distinct. Severely degree accumulates pollution are the major in soil heavy metal accumulates multiple pollution and is the 58.14% in total pollution samples. The siol in mine area has been polluted in certain degree but its pollution effect is litter.