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端部放矿分段崩落法广泛应用于分段巷道不需支护的稳定矿石中,但许多矿山都证实该法用于不稳定矿石中仍有竞争力。文中介绍了巴克尔齐克矿冶公司地下矿和哈萨克黄金采选公司阿克苏矿在不稳定矿石条件下应用该法的有效工艺,分析了提高开采强度和改进分段巷道支护方法的工艺措施,并列举了巷道顶板变形大小与巷道存在的时间和爆破地震作用的关系式。
End-section caving Sublevel caving is widely used in stable ore that is not required to be supported in segmented tunnels, but many mines confirm that this method is still competitive in unstable ore. This paper introduces the effective process of applying this method to the underground mine of Barkerzick Mining Company and the Aksu Mine of Kazakh gold mining company in the condition of unstable ore and analyzes the technical measures to improve the mining intensity and improve the support method of the section roadway. And lists the relationship between the deformation of roadway roof deformation and the existence time of tunnel and the action of blasting earthquake.