深井厚层复合顶板煤层巷道围岩控制技术研究

hrough numerical simulation analysis and spot experiment, this paper studied on surrounding rock control technology of large fracture coal roadway in deep mine under thick compound roof, according to high initial stress supporting thought of coal roadway in deep mine and supporting logos of dynamic situation compacting. Using high pretensioned stress long anchor bolt and anchor rope combined supporting program of coal roadway under 756 meters in Dingji Mine, carrying out type approval test and mineral pressure observation analysis. Mineral pressure observation result shows it has a good effect on roadway surrounding rock controlling and a steady surrounding rock structure, fracture of surrounding rock was controlled within 200mm and the test is successful.