摘要
以大姚六苴礅区矿山6个中段的3种岩性为研究对象,通过地应力测量、室内单轴抗压强度、巴西圆盘劈裂强度、弹性变形测量,结合E.Hoek判据、Russenes判据、徐林生判据、脆性判据对不同中段的岩爆倾向性进行分析.四种判据通过复合判据结合进行研判.研究结果表明:670中段会发生轻微岩爆～中等岩爆,710、740、770均无岩爆,800的紫红色细粒砂岩及860的矿石会发生轻微岩爆.基于多重判据的六苴矿区岩爆倾向性分析为地下矿山的岩爆灾害预防提供了一定的参考价值.
Abstract
For the study of rock burst proneness with different levels,different lithology of Liuju mine lot in Dayao,we selected 3 kinds of lithology in 6 middle sections of the mine as the study object,the study was carried out through crustal stress measurement,indoor uniaxial compressive strength measurement,Brazil disc splitting tensile strength measurement,elastic deformation measurement,and combining with E.Hoek,Russenes and Xu linsheng criterion,as well as fragility criterion,it analyzed the rock burst proneness of different middle sections.Four kinds of criteria are studied and judged through composite criteria.Study results show that a slight rock burst～middle burst can occur at 670 middle section,there's no rock burst at 710,740,and 770,slight rock burst can occur at 800,the fuchsia fine particle sandstone and 860 ore.The rock burst proneness analysis of the Liuju mine lot is based on multiple criteria,which provide a certain reference to rock burst disaster prevention.
维普
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