目前国内锚喷支护的应用技术发展迅速,在许多方面接近世界水平,但在支护材料方面差距还很大,这使得锚喷支护的应用领域受到了限制。国外,早在七十年代初期已将钢纤维喷射混凝土应用到各类工程实践中。例如,瑞典波立登矿用钢纤维喷射混凝土加固了因受矿石冲击而损坏的矿石溜井;日本在三条隧道中 At present, the application technology of anchor and shotcrete support in China is growing rapidly and in many respects is close to the world level. However, there is still a long way to go in terms of support materials, which limits the application of anchor and shotcrete support. Abroad, as early as the early seventies steel fiber shotcrete has been applied to all kinds of engineering practice. For example, the Swedish Bordell mining steel fiber shotcrete reinforces the ore slipway damaged by the impact of ore; in three tunnels in Japan