A new flexible closed spraying support technology for developing roadway
In order to meet the requirements of support,safety and environmental protection of mining roadway,based on the rapid thin spraying technology and the application status of related material technology,a flexible spraying material,that is,double mining(SCPPT-2 type)composite spraying material applying on the surface of coal and rock mass was developed and applied to the developing roadway support of drainage way at the boundary of Xiayukou Coal Mine 2-2 coal seam mining area.Based on the development of this project,the non-reactive thin spray products for sealing surrounding rock face are fi-nalized.The research results and field application show that the developed thin spraying materials have good film forming quality,tensile strength is greater than 2.5 MPa,and environmental protection performance reaches the standard of indoor building materials.Compared with SHOTCRETE,thin spraying technology can reduce the material transportation by more than 90%,greatly reduce the number of workers,increase the construction speed by4～6 times,and significantly reduce the gas overflow in the roadway after sealing.
developing roadwaythin spraying technologyspraying supportflexible materialsroadway support
国家科技期刊平台
NSTL
万方数据
维普
