Dust-reduction method for underground metal mine

Abstract

The invention discloses a dust-reduction method for an underground metal mine. A dust suppression agent solution is sprayed on a slope. The method includes the following steps of preparing the dust suppression agent solution according to the mass ratio of 1:5 to 1:10; setting the spraying standard of the dust suppression agent solution as 1.5 to 3.0kg/m<2>; spraying the dust suppression agent solution for three times, watering once a day after the formation of a film on the surface is complete, and setting the watering standard as 0.5 to 1.0kg/m<2>. The method has obvious effects of dust reduction and water saving. When the water is sprayed once a day, the air humidity is 25 to 30%, and the moisture can be kept moist for more than 60 days. The number of watering times cannot meet the requirements from the original 3 to 5 times per day, and now watering once a day can control the concentration of dust in the environment at 1.8 to 3.8 mg/m<3>. In addition, a lot of labor and vehicle wearcosts are saved, and the effect of improving the working environment of downhole workers is obvious.

Description

technical field [0001] The invention relates to the technical field of mining industry, in particular to a method for reducing dust in metal underground mines. Background technique [0002] The role of the ramp in the mining industry is very important. As an important second safety channel in the mine, it is also used as an air intake channel in the middle of multiple productions. At the same time, it also undertakes a large number of hauling tasks. For companies in the north, The underground conditions of mining are relatively dry, and the dust generated during the hauling process is very large. After the vehicle is driven, the dust concentration reaches 48.5-57.3mg / m 3 , while in the prior art, sprinkler trucks are generally used for dust reduction operations, and the dust reduction effect is very obvious. However, due to the high wind speed of the ramp, the air is dry, and the air humidity in the underground is only 27%. The dust suppression time is only 2-3 hours, and i...

AI Technical Summary

Problems solved by technology

[0002] The role of the ramp in the mining industry is very important. As an important second safety channel in the mine, it is also used as an air intake channel in the middle of multiple productions. At the same time, it also undertakes a large number of hauling tasks. For companies in the north, The underground conditions of mining are relatively dry, and the dust generated during the hauling process is very large. After the vehicle is driven, the dust concentration reaches 48.5-57.3mg / m 3 , while in the prior art, sprinkler trucks are generally used for dust reduction operations, and the dust reduction effect is very obvious. However, due to the high wind speed of the ramp, the air is dry, and the air humidity in the underground is only 27%. The dust suppression time is only 2-3 hours, and it wastes water resources. It dries quickly after each watering, and watering 3-5 times a day still cannot meet the requirements. Its characteristics are: a large amount of dust production, and the time is relatively continuous , the pollution area is wide, and the damage to the underground environment is very serious. Therefore, the dust reduction work on the ramp during the hauling operation is a very important breakthrough point for the improvement of the underground environment.