中国矿山工程

Due to structural zone and deep high-stress, the surrounding rock of some underground roadways is broken or deformed, leading to support difficulty. Through theoretical analysis and field test, this paper puts forward a high-strength grouted anchor support scheme, finalizes technical parameters and puts it into application by combining with actual conditions. And the application effect is judged through field investigation and deformation observation. The results show that the high-strength grouted anchor support technology can effectively improve the self-bearing capacity, integrity and strength of surrounding rock, and effectively control the deformation of roadway, which provides a reference for the control of broken roadway surrounding rock under similar conditions.