Study on the Influence of Different Mining Heights on Stress Distribution in Working Faces
The pressure effect on the fully mechanized mining face with thick coal seams and high mining height varies greatly,which has an important impact on the safe mining of coal mines.Numerical simulation is used to study and analyze the stress distribution of the working face during the comprehensive mining process of thick coal seams with high mining height.Numerical analysis models are established for different mining heights to simulate the mining process of coal and rock.The results show that the vertical stress of the advanced support of the working face decreases with the increase of mining height during the process of high mining height comprehensive mining,and the horizontal stress of the goaf of the working face increases with the increase of mining height.There is an optimal mining height process value that meets the pressure and tensile stress of coal and rock.
large mining height comprehensive miningmining heightstressanalogue simulation
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万方数据
