关键词: 沿空煤巷, 动静载, 二次支护, 水射流卸压, 数值模拟

Abstract: Empty driftway ahead of working face the impact appeared frequent along the 705 working face of a mine, combined with the mining process of serious 5 shocks appear accident analysis, the static and dynamic load superposition easily induced shock pressure roadway rockburst. On the basis of the control mechanism of the weak structure of the impact earth pressure, this paper puts forward the reinforcement technology of the two support on the basis of the primary support of the roadway, and adopts the high pressure water jet technology to control the pressure of the coal mass. FLAC2D simulation results show that the surrounding rock bearing capacity significantly enhanced, and can form a wide range of areas in the deep structure of weak surrounding rock. The results of field observation in the field of industrial test show that the surrounding rock of the tunnel is well controlled, and the research results provide a certain reference for the stability control of the surrounding rock of the roadway under the influence of mining and other dynamic disturbance.