论文部分内容阅读
针对丁5-6-26071风巷开采深度大、顶板破碎的特点,在已判别围岩稳定性的基础上,以高预应力高强锚杆-锚索协调支护为原则,对其进行了支护设计,并用数值计算的方法加以分析,工业性试验表明:掘巷阶段巷道表面位移、深部位移及深部受力均在合理的范围之内,巷道断面收缩率最大为12.4%,满足使用要求。此种支护技术在丁5-6-26071风巷的成功运用为平顶山矿区其他深井回采巷道支护提供了参考。
According to the characteristics of Ding 5-6-26071 wind tunnel with large exploitation depth and broken roof, based on the stability of surrounding rock, the principle of high prestressed and high-strength anchor-anchor cable coordination and support has been carried out. The design of the roadway is analyzed by numerical calculation. The industrial tests show that the roadway surface displacement, deep displacement and deep force are within a reasonable range. The maximum reduction of roadway cross section is 12.4%, which meets the requirements of application. The successful application of this kind of support technology in Ding 5-6-26071 air duct provides a reference for other deep mine roadway support in Pingdingshan Mining Area.