喷射混凝土、锚杆支护是无产阶级文化大革命中发展起来的新技术,是冶金矿山建设战线技术革新的丰硕成果。1965年以来,喷射混凝土、锚杆支护已陆续在五十余个冶金矿山中采用,支护了竖井、斜井、平巷和各种类型的硐室。实践证明,它在经济上是合理的,技术上是先进的,质量上是可靠的,是一项行之 Sprayed concrete and bolt support are new technologies developed during the great proletarian cultural revolution and are a fruitful result of the technological innovation of the metallurgical and mining construction front. Since 1965, shotcrete and bolt support have been adopted in more than 50 metallurgical mines in succession, supporting vertical shafts, inclined shafts, drifts and various types of chambers. Practice has proved that it is economically reasonable, technologically advanced, and reliable in quality. It is a matter of course.