Research On Movement Laws Of Deeep Mining In Xinyi Coal Mine

With the increase of mining intensity and the extension of working level,mining depth was increasingly higher,and with the extracion quantity of coal mining under “three-body”is increasingly more.So,the strata and ground movement laws of deep mining must be in depth study for accurately predicting and controlling of surface subsidence and safety mining under the "three body".Based on the geological and mining conditions of Xinyi coal mine 11010 working face,it was established the observation station to measure the surface subsidence caused by excavation of working face.The characteristics of surface movement and deformation and angel parameters of strata movement were got by calculating depends on measured data.Results shows that surface subsidence influence range and deformation value reduced largeiy,angle parameters of strata movement was larger than those of full minging and surface subsidence and deformation tended to be gentle.Obtaining methods of surface movement and deformation predicting parameters is put forward based on MATLAB.The results show that this method to determining predicting is very convenient and valid.Relation between surface movement and deformation parameters and geological and mining factors are regression analysis,which provide some references for Xinyi mine coal to determining surface movement and deformation parameters of deep mining.According to the geological andmining conditions of Xinyi mine coal,the numerical simulation models of deep mining are set up.The laws of strata and ground movement are analyzed by using UDEC numerical simulation.And the relationship between mining depth,mining height,sizes of working field,and the laws of surface movement in deep mining are studied.Research shows that the development of mining depth,the fracture zone increases gradually.The results can provide theoretical basis and scientific references for Kailuan mining area and similar mining area to predicting and controlling surface subsidence and mining under the "three body".