Numerical simulation study on"three zones"of overlying rock in inclined coal seam working face
In order to accurately divide the distribution range of the"three zones"of the overburden in the inclined coal seam working face,it was proposed to take the theoretical calculation results as the basis,incorporate the coal seam inclination angle into the influen-cing factors,and simulate the movement process of overlying rock during mining along the coal seam direction and inclination.Compara-tive analysis was conducted to determine the maximum development height of the roof collapse zone and the water conducting fracture zone in the mining area.According to the geological mining conditions of Z14-2W01 working face in Panji Coal Mine,numerical simula-tion method was adopted to divide the"three zones"of overburden rock and verified by field measurement.The research results showed that the height of the caving zone and the water-conducting fracture zone obtained by numerical simulation method in the inclined coal seam working face was close to the field measured results,and its accuracy was verified.
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