Reinforcement Technology of Roadway Support in Short Distance and Across Rise-entry Mining

The supporting model of anchor net spray(high stress yield bolt + net spray) + bird nest anchor + W steel not only can adapt to the requirements of releasing large plastic deformation energy from tunnel digging of surrounding rock,but also can adapt to the initial stability of the surrounding rock,and control the excessive deformation,which is a rigid-flexible coupling,new and active support mode.