纤维混凝土喷层具有抗拉、抗剪、韧性和耐冲击等性能,因而能提高整个支护喷层的结构强度。选用纤维主要应根据纤维材料的自身弹性模量、抗拉强度及与基质混凝土的亲附能力。对纤维来源、加工制造、环境污染和成本等情况,也应综合考虑。由于石棉纤维的粉尘有害人体健康,合成纤维成本昂贵,玻璃纤维在混凝土中较难配置均匀等缺点,目前各地应用于现场的,大都采用钢纤维做为填加材料。钢纤维除增强 Fiber concrete spray layer with tensile, shear, toughness and impact resistance and other properties, thus enhancing the structural strength of the spray gun support. The main choice of fiber should be based on the fiber material’s own elastic modulus, tensile strength and affinity with the matrix concrete. The sources of fiber, processing and manufacturing, environmental pollution and costs, etc., should also be considered. Asbestos fiber dust harmful to human health, expensive synthetic fibers, glass fibers in concrete is difficult to configure uniform shortcomings, the current applied to the scene around, most of the steel fiber as a filler material. In addition to steel fiber reinforced