Research Progress of Soil Quality in China Mining Subsidence Area

The coal mining activities would cause the subsidence to the surface ground.Thus the ground subsidence would cause the surface ground deformation, t he slope increased, high soil erosion increased, the serious failure of the land resources and the soil quality reduced.The land failure features by the mining subsidence were analyzed.The paper had a statement of the study achievements on the soil quality variation of the mining subsidence land, including the study on the variations of the soil physical property, chemical property and biological property.The paper summarized the variation law and discussed the shortages of the study on the soil qualit y of the mining subsidence land.Finall, the paper summarized the present study progress and the existed problems and provided the focus and orientation for the furth er study on the soil quality of the mining subsidence land.