Study On The Influence Of The Shaft Due To The Extraction Of Close And Thick Coal Seam Of Han Wang Coal Mine

Coal pillar mining under mine shaft and Industrial Square belongs to the research of the comprehensive system coal pillar mining, Also open up a new field of "three under" mining, Is refers to using the original shaft and other major production systems to recycle their protective coal pillar, Obviously the technical difficulty is much larger than monomer structure of the coal pillar mining.This paper takes the coal pillar roadway type mining with backfilling under mine inclined shaft of Han Wang mine as the engineering background, research on the influence of the shaft after mining. According to the mining geological conditions Han Wang mine, In the perspective of shaft safety and make full use of coal resources, two mining scheme is put forward. By the high content fly ash backfilling material of Han Wang coal mine as experimental object, Study the mobility of the filling slurry, the contractility and water segregation amount In the process of solidification, initial setting time and the uniaxial compressive strength after solidification, To provide experimental basis for the selection of parameters which be applied to the prediction of shaft deformation, numerical simulation, and the physics resemble simulation. Combined with the measured data of adjacent coal mine and the literature data to determine the basic parameters of rock strata movement and the estimated parameters, Using the probability integral method to expect the displacement and deformation of the inclined shaft after the coal pillar is excavated. Numerical simulation and physics resemble simulation is used to analyze the deformation of the shaft in the mining process. Monitoring the filling situation and shaft deformation, analysis of filling effect and shaft deformation.