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一、自燃陶粒替代砂、石为混凝土骨料 井下喷射混凝土支护是一种技术先进、安全可靠、经济合理、施工快捷的支护方法,传统的井下巷道喷射混凝土支护是一种原材料与普通混凝土相同,而施工工艺特殊的施工方法。井下巷道喷射混凝土支护,就是将水泥、砂、石子按一定比例混合搅拌后送入喷射机中,再用压缩空气加水后将搅拌好的混合物料喷射到巷道壁上。这种方法其主要存在问
First, spontaneous combustion of ceramic particles instead of sand, stone for concrete aggregate shotcrete support underground is a technologically advanced, safe, reliable, economical and efficient construction of the rapid support method, the traditional underground shotcrete shotcrete support is a raw material and Ordinary concrete, construction technology and special construction methods. Downhole roadway shotcrete support, that is, cement, sand, gravel mixed according to a certain percentage of the mixture into the jet machine, and then compressed air and water after the mixing of good mixing material jet to the roadway wall. This method exists mainly in question