Abstract: Abstract: According to the characteristics of comprehensive mechanized heading face, this paper have established k-ε-Θ-kp mathematic model to solve two-phasep flow of gas and particles in dust space with eulerian-eulerian method and eulerian-lagrangian method. Numerical solution of gas-particle two-phase flow was put forward. Combined with numerical simulation results, the forced-exhaust ventilation mode has been improved to introduce dust control technology with enclosed air curtain, optimize the design of the outer digging machine spraying device, choose preferably the efficient atomizing nozzle, develop a highly efficient chemical dusting agents and air curtain dust control devices. Eventually comprehensive dust control and remove system with enclosed air curtain is constructed in fully mechanized workface. At the same time, the system has been applied in railway laneway in the No.2 mining area of Xinzhi coal mine. It can effectively control the dust of working surface, It was determined that it was the work that the average dustproof rate of full dust and respirable dust reach 94.8% and 93.9%.

Key words: Key words: k-ε-Θ-kp mathematical model, forced-exhaust ventilation, comprehensive mechanized heading face, enclosed air curtain, comprehensive dust control and remove system