Analysis Based On Gis-coal Surface Subsidence Laws And Their Ecological Impact

The research of the law of mining subsidence for both raising of people's lives and exploiting of national economy has important finance. To reduce the loss caused by the law of mining subsidence, law and control technology of mining subsidence must be done in order to forecast correctly the forthcoming subsidence situation and evaluate rightly the influence of destroyed environment in the mining course. In the last several decades, a perfect theory about mining subsidence has formed in these aspects, and the computer soft about these aspects has achieved such as mining subsidence forecasting and law and so on. However, all soft products don't combine with available development environment. Though GIS has been widely used in many businesses, it is not enough in the study of mining subsidence. The native advantages of GIS will greatly improve the function of mining subsidence soft.Based on the material of mining subsidence on Eerduosi mining area, this paper summarizes the control technology at home and aboard and makes a deep study on the control law of Eerduosi mining area. The paper applies mode method to solve the problem of calculating parameters on road-tested materials of any shape working face and studies the precision of the curve fitting, and advances the standard and calculating method of assessing curve fitting quality, and synthetically considers both the model error and hap errors influencing curve fitting, and demonstrates a prior selection standards of curve fitting equation.Based on the platform of software of geographical information system, combined with geographical information technology and database technology.