Abstract:
Aiming at the effect problems that mining induced by longwall top coal caving (LTCC) and gob-side entry driving in thick coal seam and repeat staggered dynamic pressure in gob, based on the mining conditions of 3-up-408 caving face in Fucun Coal Industry, this paper studied the surrounding rock deformation characteristics of gob-side dynamic pressurized roadway by theoretical analysis and numerical simulation, and proposed the combined supporting plan of anchor ladder network(cables). The field measured results of stresses in bolts and surrounding rock deformation indicated that the horizontal and vertical convergence of gob-side entry roadway in thick coal seam were only 1.4% and 1.2%, which proved that the supporting plan satisfies the surround rock stability controlling demands and normal service.