软岩巷道长、短锚杆注浆技术在巷道底鼓中的研究与应用

摘要

Since surrounding rock is influenced by high stress, serious roof slipping and falling and floor heave occur in soft rock roadway. To keep the stability of the surrounding rock, long-short anchor grouting is used to increase stone strength, suppress floor heave, and improve the bearing capacity of the surrounding rock. By theoretical study, FLAC3D numerical simulation and engineering practice are combined to analyze the mechanism of the floor heave and then to determine the best supporting scheme.%基于软岩巷道围岩受高应力的影响，顶板滑移、冒落严重，底鼓极其剧烈。为了控制巷道围岩稳定性，利用巷道顶底板长、短锚杆联合注浆锚固技术，提高结石强度，抑制底鼓及加强围岩综合承载能力。通过理论研究，采用FLAC3D数值模拟与工程实践相结合，分析了巷道底鼓破坏机理，确定了最佳支护方案。