论文部分内容阅读
分析锚杆支护大面积推广应用中的几个技术问题,包括锚杆的加工、巷道的断面形状选择、锚固方式、切眼施工与支护方式、联合支护中刚度的匹配等,它们常被忽视,并影响到支护系统的安全可靠性,借此提出一种高安全可靠性的新型主动支护技术体系,即基于预应力结构理论的高预应力主动支护:高性能预应力锚杆、小孔径预应力锚索、预应力钢绞线桁架及其组合支护。
This paper analyzes several technical problems in the large-scale application of bolt support, including the machining of bolt, the choice of cross-sectional shape of tunnel, the anchoring method, the construction and support of cut-outs, the matching of stiffness in joint support, etc. Is neglected, and affects the safety and reliability of the support system. In this way, a new type of active support system with high safety and reliability is proposed, that is, high prestressed active support based on prestressed structure theory: high performance prestressed anchor Rod, prestressed anchor with small aperture, prestressed strand truss and its combined support.