Research on Influencing Factors and Process Optimization of Rapid Excavation of Coal Roadway in Working Face
An analysis was conducted on the factors affecting the rapid excavation of the working face in response to the geological conditions,construction techniques,and support technologies that affect the excavation process of the Sanyuan coal mine.On this basis,based on the geological conditions of the area,a numerical calculation model for the working face is established.By establishing boundary conditions,grid models,and constructing gravity field models,the initial stress equilibrium model is solved.Optimized the rapid excavation process,including optimizing the coal cutting process and support scheme under different geological conditions.A mine measurement plan was designed,and the surface displacement of the roadway,the deep displacement of the two sides,and the stress on the anchor cables were analyzed based on the measured data.The results showed that the displacement during tunnel excavation was small,and the excavation distance remained stable after 80 m.The support effect was good and met the excavation requirements.
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