MINING SUBSIDENCE AND ITS PREVENTION AND CONTRAL IN HUAINAN MINING AREA

The authors, on the basis of surface subsidence reserch and practics which caused by mining in Huainan Mining Area, have divided the surface subsidence under the various geological mining conditions in this area into four types of basins and select various math, models to indicate and express. They have drawn the surface subsidence trend forecast charts of three main parts in this area with the help of drawing machine and state the harm caused by surface subsidence to the Huai River dykes and dams, national railways, buildings, underground pipelines and transmission lines, they have analyzed and forecasted the failure changes of the surface form; put forward the surface subsidence adminstering countermeasures which involve two parts: both preventative meassures and the comprehensive contral.