Abstract:

In order to improve the working environment of comprehensive mining surface, reduce occupational disease hazards, lower the incidence of occupational diseases, and ensure the health and safety of operators in coal enterprises, the incidence of occupational diseases in China's coal industry in recent years was analyzed. According to the principles of various prevention and control technologies, the generation and distribution characteristics of occupational disease hazards in comprehensive mining surface were discussed. In addition, multiple technologies and measures were utilized. They mainly included purified air flow, optimized equipment start-up process, four-way linkage dust reduction, inter-frame guide groove, over-limit automatic early warning, self-moving full-section dust filter, positive-pressure fully-enclosed helmet, remote closed operation room, active sound absorption, and noise filtering. Dust and noise hazards were reduced from three dimensions: source control, process elimination, and terminal control. Furthermore, the technologies and measures were applied in mines in Shendong. The results show that the dust content and noise value can be reduced to the limit value of coal mine safety regulations. As a result, the incidence of pneumoconiosis and noise deafness can be lowered, the health of employees can be effectively protected, and the high incidence of occupational diseases can be alleviated.

Key words: comprehensive mining surface, occupational disease hazard, pneumoconiosis, dust content, noise value