高应力软岩巷道预留刚隙柔层支护技术

高应力软岩是一种在高应力环境下强度低、流变性强的的工程软岩体。在这些岩体中掘进巷道显示出来的变形特征与硬岩巷道截然不同。预留刚隙柔层支护在高应力软岩巷道支护工作中起到了有效释放巷道变形能量和控制巷道变形的作用。通过剖析预留刚隙柔层支护中的刚、柔层耦合关系以及耦合支护与围岩的相互作用,对预留刚隙柔层的支护机理做了深入的研究。据此,最后对预留刚隙柔层支护中材料及参数的选择方法给予详细的论述,为高应力软岩硐室的预留刚隙柔层支护提供了合理的设计方法参考。

Technology of Rigid Gap Flexible Layer Support in High Stress Soft Rock Roadway

High stress soft rock is a kind of engineering soft rock that has low intensity and strong theology in high stress area.The deformation characteristics demonstrated by boring in soft rock are very different from in hard rock.Rigid gap flexible layer support plays an important role in releasing roadway deformation energy effectively and controlling roadway deformation in the support of soft rock roadway in high stress area.The mechanism of rigid gap flexible layer support is researched in depth by analyzing the coupling relationship between rigid and flexible layers and interaction of support and surrounding rock in rigid gap flexible layer support.According to above,the choice of materials and parameters in rigid gap flexible layer support is discussed in detail at last,which provides a reasonable design method reference for rigid gap flexible layer support of soft rock roadway in high stress area.