Technology of pipe shield and anchor combined support to pass through high drop fault formation

In order to solve the soft and broken roof and floor,serious deformed roadway and extremely difficult support and other difficult problem during the mine roa dway passed through a high drop fault formation,based on No. F 104 fault formation of Gubei Mine as a study object,a design and actual engineering applied study was con ducted on the pipe shield and anchor combined support for the mine roadway passed through the high drop fault formation. A pipe shield + pre-grouting advance support wi th the bolt 1 anchor intensification after the excavation of the mine roadway,grouting strength compensation and pouring concrete reinforcement and other step combined s upport method were applied and the detail design parameters and construction procedure were provided. The results showed that the combined support technology applied to the site could effectively control the surrounding rock deformation of the mine roadway and could realize the safety and rapid excavation of the mine roadway. With the ti me passed,the surrounding rock of the mine roadway reached a new balance ,the general deformation of the mine roadway was not high and the actual applied requirement s of the project were applied.