Abstract:

To study the area of coal mining subsidence and the land ecological service value because of mining subsidence .Firstly， forecast mining subsidence quantitatively by FLAC model, then, analyzed and estimated land ecological service value quantitatively caused by the mining subsidence according to the mining subsidence prediction results based on GIS technology. The results show that the maximum value for subsidence of the whole field is 3 590 mm, the maximum inclined value is for 71.8 mm, the maximum value for curvature is 2.18×10-3/m, the maximum horizontal deformation value for 27.3 mm/m, maximum level moving 898 mm for the whole field, surface subsidence area for 8.09 km2, Will lead to loss of land ecosystem service value 5,371,100 Yuan.