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本文建立了非对称开来时矿柱岩爆问题的简化力学模型,用计算机符号运算求出了模型的理论解。在此基础上讨论了岩爆准则与前兆,并进一步讨论了岩爆发展过程与前兆规律。文献[1]、[2]、[3]及本文的工作表明,各种条件下的矿柱岩爆问题都具有非恒定变形速率的特点,因此顶板下沉速率趋于无穷作为矿技岩爆前兆具有普遍性。
In this paper, a simplified mechanics model of rockburst in open-pillars with asymmetric opening is established. The theoretical solution of the model is obtained by computer symbolic computation. On this basis, the rockburst criteria and precursors are discussed, and the development process and precursor law of rockburst are further discussed. The literature [1], [2], [3] and the work in this paper show that the pillars rockburst under various conditions have the characteristics of non-constant deformation rate, so roof subsidence rate tends to infinity as a rock burst Precursor is universal.