(1) Wind and dust suppression wall. As far as the mechanism of the wind-blocking and dust-suppressing wall is concerned, it can avoid the obvious vortex of the incoming wind and reduce the speed of the wind, thereby reducing the speed of the incoming wind to reduce the amount of dust and achieve the purpose of dust prevention and suppression. The material of the windproof and dust suppression wall is generally made of organic non-metallic composite materials or metal plates. Under the principle of aerodynamics, it is processed into geometrically shaped windproof panels based on the coal yard environment. The windproof panels are combined with the coal yard dustproof and dust suppression requirements. Combined to form a wind and dust suppression wall. The upper and lower interference airflow on the inside of the wall can effectively reduce the impact of wind on the coal yard and reduce the probability of dust. During the installation process of the windshield and dust suppression wall, the opening ratio of the windshield should be controlled, generally 30% is the best, and the windshield distance is about 10 times the height of the windshield. In this way, it can be obtained Ideal wind and dust suppression effect.

(2) Chemical dust suppression technology. Chemical dust suppression technology mainly uses chemical dust suppressants to effectively suppress coal field dust. Generally, chemical dust suppressants can be divided into three types, namely wetting agents, binders and coagulants. Wetting agents and binders mainly suppress dust in open-air coal storage yards. Wetting agents are appropriately added to water with a small amount of surfactants and moisture retaining agents to appropriately extend the time for coal dust to scatter. Binders are a kind of Chemicals, with polymer resin and surfactant as the main components, spray the binder on the surface of the coal pile. After the consolidation layer is formed, it can form a layer of coverage on the surface of the coal pile, thereby reducing the probability of dust in the coal yard. The application of chemical dust suppression technology in coal field dust control has extended the dust suppression time to a certain extent, is easy to operate, and improves water resource utilization, and has received great attention from society. However, because some chemical dust suppressants can easily cause secondary pollution in practical applications and have high production costs, there are certain limitations in the application of chemical dust suppressants. In the new era of the development of modern society, the process of industrialization has accelerated significantly, and the environmental awareness of social groups has increased significantly. Research on new chemical dust suppressants should be increased to develop dust suppressants with excellent dust suppression effects and economic applicability to meet the needs of society. Continuous development needs.

(3) Other dust suppression technologies, including compaction, covering, sealing, setting up windbreaks, etc. The application of compaction technology mainly applies external pressure to the loose coal pile to enhance the density of the coal pile, reduce the porosity, and reduce its volume, thereby reducing dust in the coal field. However, the dust suppression efficiency of compaction technology is low and its application range is limited, making it unsuitable for use in coal yards with frequent operations. Covering technology is to place coverings such as plastic tarpaulins on the surface of coal piles to effectively cope with windy weather and reduce dust in coal yards. It is a relatively simple method of dust suppression, but it has temporary characteristics, especially for dust suppression in large-area coal yards. The operation in the process is difficult, and once the covering is discarded, it will often cause new pollution to the environment. Sealing technology suppresses dust in coal yards by sealing dry coal sheds, reticulated shell structures, etc., thereby reducing dust pollution to the ecological environment. Sealing technology is safe to use and has good wind resistance, but the cost is higher. The installation of windbreak belts is an ecological dust suppression measure. Since windbreak belts have the function of absorbing and retaining dust, they can slow down the wind speed and inhibit the outward spread of dust. They can also beautify the ecological environment and meet the basic requirements of sustainable development.