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早在我国解放初期,锚杆支护就开始在矿井中采川,由于1965年喷射混凝土技术的出现,两者相结合的岩体加固技术获得了迅速发展。它把控制岩层的方法从被动地支承改为主动地加固,改变了传统支护施工速度慢、材料消耗多、劳动强度大的落后面貌。这是我国地下矿山井巷、硐室建筑史上的一次革命。它对于多快好省地发展矿山生产建设起到了积极的作用。一、锚杆支护的作用处于破碎的不稳定的岩体中的矿山巷道,用又粗又密的木支架或厚度大于30厘米的钢筋混凝土支护,常常遭到破坏;而在相同地质条件下,采用锚杆及薄层喷射混凝土联合支护,却能长久地保持巷道的稳定性。这到底是什么原因呢?这是因为两类
Early in the liberation of our country, bolt support began to be mined in the mine. Due to the emergence of shotcrete technology in 1965, the combination of both rock mass reinforcement technologies gained rapid development. It changed the method of controlling rock formation from passive support to active reinforcement, changing the backwardness of traditional support construction with slow construction speed, material consumption and labor intensity. This is a revolution in the history of underground mine shaft and chamber construction in China. It has played a positive role in the development of mine production in a more rapid and economical manner. First, the role of bolt support In broken rock unstable rock roadway, with thick and thick wood support or more than 30 cm thick reinforced concrete support, often been destroyed; and in the same geological conditions , The use of bolt and thin layer shotcrete joint support, but can long-term to maintain the stability of the roadway. What exactly is this? This is because of two categories