Abstract: In view of the deficiencies of current dust and smoke suppressors for coalmine blasting, such as low efficiency, difficult acquisition of raw material and high price, a kind of high-performance formulation of dust and smoke suppressor is developed by using uniform design method to decide the mixing proportion, which is composed of hygroscopic agent, surfactant, smoke suppressor and corrosion inhibitor.Taking these 4 elements as variables, a regression equation for dust and smoke suppression coefficients is obtained by stepwise regression method based on 3.0 version software for uniform designing.On this basis, the optimal value of dust and smoke suppression coefficients is found under given experimental conditions.The optimized formulation of aqueous solution is: hygroscopic agent, 5%; surfactant, 1%, erosion inhibitor 0.4%;and smoke suppressor 0.2%.Application tests indicate that this kind of agent can effectively and conveniently suppress the poisonous dust and smoke produced in coalmine blasting, and will have an extensive application prospect in safety and environment field.

Key words: Dust and smoke suppressor, Formulation, Uniform design,Dust suppression rate,Smoke suppression coefficient