论文部分内容阅读
造成巷道变形破坏的主要原因是围岩松动圈的扩大,因此研究松动圈的发展变化很有意义。基于巷道围岩钻孔可视化探测结果,验证前苏联E.1.Shemyakin等人所提出的“不连续区”松动圈演化规律,并提出了“不连续类拱结构”的概念。实践证明,锚网索梁喷注联合支护方案能明显提高破碎围岩的整体强度,增强围岩承载能力和稳定性,更好的控制巷道的变形。
The main reason for the deformation and destruction of the roadway is the expansion of the loose ring of the surrounding rock. Therefore, it is significant to study the development and changes of the loose ring. Based on the visualization of the borehole surrounding rocks, the evolution of “discontinuous zone ” loose rings proposed by former Soviet Union E.1.Shemyakin et al. Was verified and the concept of “discontinuous arch structure ” was proposed. Practice has proved that the combined support scheme of bolting with wire rope and girder can obviously improve the overall strength of the crushed surrounding rock, enhance the bearing capacity and stability of the surrounding rock and better control the deformation of the roadway.