Analysis On Anti-disaster Ability Of Ventilation System Based On The Coupling Technology The Zone And Network Model

To enhance the mine ventilation system's capacity and then prevent disaster, as well as to provide effective decision-making during mine disaster, capacity to prevent disaster in the normal production and disaster period are discussed in the dissertation.The unreasonable structure, Circulated ventilation system and series ventilation structure are researched and analyzed, it will reduce the capacity to prevent disaster of the ventilation system during the disaster period. Fire dynamic simulation technology is one of the most important method for analyzing of mine ventilation system during disaster period, the traditional one-dimensional dynamic simulation technology is the only viable way for mine ventilation system as a whole simulated, but the practice proved that the delamination phenomena is showed near the fire source after the fire occurred, simulation results of network has errors. This paper modify the software of fire simulation network to enhance the accuracy of simulation results; put up the technical feasibility analysis of coupling technology of two-dimensional and one-dimensional simulation, zone modeling simulation can bu used in the mine fire simulation by the multi-unit regional simulation approach. Bring forward the theory of coupling technology of two-dimensional and one-dimensional simulation, mathematical simulation model for the boundary conditions is established, and then discuss and design the program of fully coupled simulation.Compare the simulation results and the practice data, validate the fully coupled simulation is more useful for the analysis of the mine ventilation system's capacity to prevent disaster and service for the salvage during the disaster period.