Dao Qing Mine Large Angle Roadway Bolting Design And Application

Based on the analysis of the geological conditions in DaoQing mine, the principle ofbolt（rope）support theory is analyzed combined with the surrounding rock stabilitytheory, the existing anchor bolt（anchor cable）support theory and the impacting factorsof bolting reliability. And in the light of obviously asymmetric or not equilibriumcharacteristics in gateway of inclined coal seam surrounding rock distortion anddestruction in the same transect, the asymmetry supporting way is adopt, and thenecessary measures are taken in angle and other key parts，the supporting density andintensity are strengthened，anchor bolt supporting design is done in DaoQing mine byusing the roadway design of supporting subsystem of digital mine management softwaredeveloped by Liaoning Technical University. The supporting type and the section shapeare selected through the computer software, which sets rock surrounding coefficient andsurrounding rock parameter for roadway surrounding rock. The sectional drawing, crosssection features table, material consumption table can be created automatically bycomputer, which saved workload and guaranteed the accuracy and scientificity of thesupporting design at the same time, which established new route for the area of roadwaysupport design.