Ground Movement And Deformation Law Analysis Of The Pan Yidong First Mining Face

China has a large number of mines buried under thick alluvial mining under thick alluvial mines will inevitably lead to very complex rock formations and ground movement.In order to recognize this move and decision-making for the next production services. Currently, the main method surface movement observation station is built for field observations.This paper combines the Pan Yidong1252(1) first face of ground movement and deformation analysis of the law project. Huainan Mining Group under the background of "Build big mine, high input, high-quality and strict management" safe production,the establishment of observation stations、observation embodiment、the data processing field observation. Do control measure to control points and monitoring points、connect measurement、daily observation and comprehensive observation.Use static GPS positioning、GPS-RTK、high-precision electronic level measure elevation measurements and so on.Then,adjustment field measurement data. According to Pan Yidong observation station measured data mining analysis, combined with geological and mining conditions and mining principle of mining subsidence, research and analysis of horizontal movement and subsidence deformation caused by mining subsidence calculation, provide technical support for the subsequent decision.The results show that:with the working face forward,1252(1) first mining face in the entire mining process The main cross section deformation characteristics in line with nearly horizontal deformation coa、thick loose bed cover、non-full extraction of the main section of movement degeneration law. The main section of inclined and horizontal movement in the process of dynamic development basic similar shape,and with the advance of the dynamic deformation range and increasing the amount of deformation face. Eventually stabilize around the eyes and open cut mining line had stopped moving deformable extreme(movement and deformation extreme positive and negative). Main section horizontal deformation and curvature deformation moving relatively small amount of deformation (particularly curvature deformation). Dynamic deformation susceptible to measurement error and other non-mining factors interfere, so as the face advance the main section of the course there is a certain deformation characteristic curve volatility, but the overall trend in line with nearly horizontal deformation coal, non-full extraction, mining face covered with thick loose layer of ground movement and deformation laws.