Research On Ground Movement Laws Of Deep Mining In Kailuan Mining Area

Compared with geology and mechanics environment of shallow mining, it has been many changes with the increase of mining depth. And surface movement and deformation laws of deep mining are significantly different from shallow mining. 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 field investigations, data collection and comprehensive analysis of the results of surface movement observation stations in Kailuan mining area, obtaining methods of surface movement and deformation predicting parameters is put forward. The results show that this method to determining predicting and angle parameters 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 Kailuan mining area to determining surface movement and deformation parameters of deep mining. According to the geological and mining conditions of Kailuan Lvjiatuo coal mine, the numerical simulation models of deep mining are set up. The sameness and differences between deep mining and shallow mining in laws of strata and ground movement are compared and analyzed, by using UDEC numerical simulation.And the relationship between mining depth, mining height, sizes of working field, the ratio of mining depth and mining thickness, and the laws of surface movement in deep mining are studied. 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".