马兰矿18506工作面厚硬顶板回采巷道支护技术研究

Study on support technology of thick hard roof mining roadway in 18506 face of Malan mine

为了解决马兰矿在工作面回采过程中,由于顶板来压引起的巷道围岩变形严重、锚杆大量失效等问题,通过数值模拟、理论分析等手段发现巷道顶板来压表现为"压力大小交互、周期长短交替"的特点,在18506工作面设计应用抗动载支护系统,现场应用及围岩观测验证了效果良好,为类似地质条件下巷道的支护提供参考依据。

In order to solve the problem of the deformation of the surrounding rock of the roadway caused by the roof pressure and the large failure of the bolt,the roadway roof pressure with features of big and small pressure interaction,alternating cycle length was summarized by the numerical simulation and theoretical analysis.Dynamic load resistant support system was applied in 18506 working face,with good field application and surrounding rock observations,providing a reference for the support of roadway under similar geological conditions.