An innovative wind tunnel apparatus for evaluating the performance of the surfactant-aided coal dust suppression

摘要

#$%^&*AU2019101391A420200102.pdf#####Abstract An innovative apparatus for wind tunnel test is designed for evaluating the performance of the surfactant-aided coal dust suppression to reduce coal dust in underground coal mines. The traditional experiments evaluate the performance of surfactant-aided suppression based on the surface tension test, the adsorption test, the zeta potential test and coal wettability test. This innovative apparatus can evaluate the coal dust reduction performance of the surfactant-aided suppression in underground roadways and tunnels more authentic than traditional static methods. This apparatus mainly consists of a wind tunnel body made by iron frame and acrylic plastic, a dust generator, a liquid spray system, and five metal stands. This described apparatus can be used to evaluate the performance of the surfactant-aided suppression for coal dust reduction.(5) (6) (8) (3) (1) Blocking mesh (H: 0.5m, W: 0.5m) (2) Dust generator (3) Stands (4) Liquid spray system (5) Handheld aerosol monitor (6) Dust measurement hole (0:0.005m) (7) Wind tunnel heading (H: 0.5m, W: 0.5m) (8) Water residual (9) Wind tunnel body (H: 0.5m, W: 0.5m, L: 4.5m+1m+4.5m) Figure 1 Wind Tunnel