Analysis on Spatial Disturbance Influence of Surrounding Rock Stress in the Staggered Roadways and Its Control Countermeasures

Combined with specific engineering examples, the spatial disturbance influence characteristics and laws of surrounding rock stress in staggered roadways are analyzed by numerical simulation. This paper concludes that (1) compared pressure behavior general roadway, stability roadway is relatively poor, showing local serious behavior, such as intensified destruction side, failure fracture penetration between roadways, deformation rock. The reason at position obviously superimposed disturbed each other; (2) influencing factors instability interlaced follows: greater buried depth smaller distance more intense superposition roadways; horizontal azimuth, range unbalanced original field, worse resulting (3) for layout, increasing closer to orthogonal layout selecting arch section lower conducive bearing (4) constrained space conditions role bolt cable support limited. Passive key realize safety so control technical scheme active passive combined put forward, upper “bolt + shotcrete concrete cushion floor” U-shaped steel reinforcement shotcrete” within can achieve satisfactory supporting effect.