关键词:

冲击地压 , 高冲击韧性锚杆（索）, 主动支护 , 巷道围岩控制

Abstract: In order to solve the problems of serious deformation and damage of the surrounding rock and low support strength of the impact ground pressure roadway, the influence of stress wave on the roadway was analyzed, the high-impact toughness bolt (cable) was developed, and the synergistic anti-scouring mechanism of the high-impact toughness bolt and the high-strength anchor cable was proposed. Based on the engineering background of the 30207 wind tunnel of Mudu Chaideng Mine, the design and application of high-impact toughness anchor (cable) support were carried out from the supporting materials and supporting body structure according to the roadway conditions and environment. From the on-site monitoring results, it can be seen that the deformation of the roadway in the test area has been significantly controlled, and the deformation is mainly based on the deformation of the bottom drum and the two gangs, and the bottom drum volume reaches more than 400mm during the roadway excavation, and the distance of the two gangs reaches 300mm. With the roadway excavation, the force of the roof bolt cable is gradually stabilized, and the force is 170kN and 150kN respectively. The force of the mining help bolt (cable) is quite different, and the axial force of the bolt is gradually lost and gradually stabilized; The force fluctuation of the side bolt of the coal pillar is large, and the force of the anchor cable is relatively small, and the force is located at 70-110 kN. On the whole, the roadway support strength is improved, the stability of the roadway surrounding rock is ensured, and the demonstration effect is good.