Study On Key Techniques Of Fully-mechanized Fast Driving For Large Cross Section Coal Roadway

The paper, combining the gateway of E2-1305 coal face of Liu zhuang coal mine, has done the research to t fully-mechanized fast driving for large cross section coal roadway. Analysis approach get viscous-elasticity analytical solutions of roadway in deep supporting craft process . The Shape of Section of mining roadway and the relational parameters of the cable are decided by FLAC2D. Through theoretical analysis and numerical simulation, we obtained axial force distribution of rock bolt, shear stress distribution of rock bolt , shear stress distribution of iface between anchoring agent and rock, and the relationship of Energy Transfer among this three aspects. We simulateσ_z distributing of excavating different length every time ,have or no remain roof coal,inatall different disposal of cable and pilot method by FLAC3D,obation some conciliations. All this provide the theory reference for fully-mechanized fast driving for large cross section coal roadway, establish theory base, and have certain instruction function for the engineering practice,obtain good technique result and product in a very significant economic effect.