Study on Mining-Induced Effective of Soil Erosion in Mining Areas

The process of estimating the soil erosion index based on RS and GIS method was described in the paper. The methods of applying the GIS and field theory to research the mining-induced effectives of soil erosion are discussed. The mining-induced effective of soil erosion was depicted and quantitatively analyzed around spatial variation, cumulative effective and mining delay. The results of the case study show that the obvious related law exists between soil erosion and mining subsidence. The soil erosion intensity takes on ascending trend during the early post-mining ages and late descendent trend till to a new level. The mining delay of soil erosion is about 4 to 17 years. The soil erosion begins at 4 years and achieves the most serious condition at 17 years after mining activity. The mining-induced erosion ends around 26 years after mining activity. The mining-induced change law of vegetation land and middle-grade erosion part of arable land drives the whole soil erosion.