Research on Automatic Spray Equipment of Thin Spray Support Technology for New Material in Coal Mine Roadway

Abstract

Based on a new type of non-reactive polymer powder material for thin spray-on support technology in coal mine roadway, an automatic spray equipment for coal mine roadway thin spray-on support is designed and developed. It has Kinds of movements and motion trajectories. This paper introduce The technological basis and working principle of the equipment, design basis, and overall system composition of the equipment, which including: mechanical system, hydraulic system, and control system. Compared with the concrete spraying technology, the thin spray-on technology can reduce the material transportation volume by more than 90%, significantly reduce the labor intensity of workers, improve the construction efficiency and the construction environment. It is an ideal choice for closure and supporting for the future underground roadways.