Water-sand mixture inrush through weakly cemented overburden

Water-Sand Inrush Controlling FactorsPhysical SimulationNumerical SimulationDevelopment of the overburden fractureFurther analysis was performed using numerical simulations to determine the development of the overburden fracture and water pressure variations in the Paleogene aquifer. In the 1980s, Cundall and Strack proposed the discrete element method of particle flow (Cundall and Strack 1980). ThHydraulic pressure variationsBased on the numerical simulation of the overburden failure, we simulated variations in the hydraulic pressure within the Paleogene aquifer for connecting fractures. When simulating the water and sand mixing flow, we considered both the relative velocity between sand particles an在link.springer上