不同推采速度下孤岛工作面应力场变化的模拟研究

Simulation Study on Stress Field Change of Island Working Face under Different Push Mining Velocity

不同的推采速度会加剧采掘区域的应力集中程度并造成巷道围岩系统失稳及破坏灾害。以济宁二号矿93_下05孤岛工作面为研究对象,开展对不同推采速度下孤岛工作面应力分布及变化规律的数值模拟,确定工作面不同区域的合理推采速度。研究成果对基于预防冲击地压角度合理工作面的安全推采速度具有重要的参考价值和理论指导意义。

The different pushing speed can increase the stress concentration of the mining area and cause the instability and damage of the surrounding rock system of the tunnel.Taking No.93 lower 05 isolated island working face of Jining No.2 Coal Mine as the research object,the stress distribution and change rule of isolated island working face under different mining speed are simulated,and the reasonable mining speed in different areas of working face is determined.The research results have important reference value and theoretical guidance significance for the safe mining speed of reasonable working face based on the prevention of rockburst angle.