针对甘肃某铅锌矿开采深度已达800～1000m, 部分巷道出现片帮冒顶等现象及岩爆活动剧烈的现状, 利用模糊物元理论, 选取岩石脆性系数、巴顿岩爆判据、弹性变形能指标和冲击能指数4个指标作为评价依据, 通过岩爆倾向性评价隶属函数构建岩爆倾向性评价模糊物元, 得到不同中段各类岩石的岩爆倾向性综合评价结果;该矿区岩爆以水平应力型和综合应力型为主, 自重应力随开采深度逐渐增大, 将占主导;岩爆破坏为板状劈裂向块状剪切及片状弹射发展的过程;提出了软化围岩、改变围岩应力状态、支护与加固、优化爆破参数等深井岩爆防治措施, 为类似条件深井开采岩爆评价及防治工作提供了理论指导依据.%The mining depth of a lead-zinc mine in Gansu Province is 800 ～ 1 000 m, spalling and roof falling phenomena and rock burst phenomena are appeared in some roadways. Rock brittleness coefficient, Barton rock burst criterion, elastic deformation energy index and impact energy index are selected as the evaluation criteria based on Fuzzy Matter Element theory which is constructed by subordinate function of rock burst tendency evaluation. Fuzzy matter element for rock burst evaluation is established by the membership evaluation function of rock burst tendency, the comprehensive evaluation results of rock burst tendency in different middle sections are obtained. The results show that the phenomenon of rock burst can be divided into gravity stress, horizontal stress and comprehensive stress, and the main types are horizontal stress and comprehensive stress, with the increasing of mining depth, gravity stress is increased gradually, it will become the dominate one; rock burst failure process can be described as plate splits develops into block shear and sheet ejection. Based on above discussion results, the deep rock burst prevention and controlling measures such as softening the surrounding rock, changing the stress tage of surrounding rock, supporting and reinforcement, blasting parameters optimization, etc, so as to provide some theoretical reference for rock burst evaluation and prevention in deep mines under the similar conditions of the mine.
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