Research on thin spray-on technology and equipment of coal mine

Based on the existing problems and demands of coal mine support, as well as the advantages of thin spray-on liner in coal mine support and gas sealing, the research on thin spray-on material is carried out. Two kinds of thin spray-on products are qualitatively analyzed, and the thin spray-on equipment is developed and applied. The results show that the performance of thin spray-on material meets the requirements of coal mine. The production efficiency and construction speed are improved, and the underground material transportation volume and the number of workers are reduced. At the same time, gas infiltration is reduced and the safety of the underground is improved.