Dust is one of the most burdensome hazards found in the environment.It is composed of crushed solids that pose a threat to the health and life of people, machines and machine components.At high concentration levels, it can reduce visibility.All of these negative phenomena occur during the process of underground mining, where dust hazards are common

In view of the common U-shaped apron structure of large- and medium-sized airports at home and abroad, this study considered the optimization design and performance evaluation of the U-shaped apron operation procedure.First, by analyzing the physical structure characteristics and traffic operation characteristics of the U-shaped area, exclusive, pa