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为提高地下岩爆灾害预测的准确性,考虑岩石的岩性,选取大理岩、花岗岩、角岩和矽卡岩进行力学和微观试验,研究具有岩爆倾向性岩石的微观机制,建立基于莫氏硬度的岩爆倾向性串并联模型。计算4种岩石的加权模式硬度。结果显示,串联加权莫氏硬度大于6.0、并联加权莫氏硬度大于0.5的岩石表现出强烈的岩爆倾向性,串联加权莫氏硬度小于4.0、并联加权莫氏硬度小于0.3的岩石表现出较弱的岩爆倾向性。试验结果表明,岩石的岩爆倾向性主要与岩石的微观结构、矿物组成和解理条件等有关,含坚硬、储能能力强的矿物的岩石有强烈岩爆倾向性。
In order to improve the prediction accuracy of underground rock burst, consider the lithology of the rock, select the marble, granite, horn rock and skarn for mechanical and microscopic experiments to study the micro-mechanism of the rocks with rock burst tendency, Hard rock burst tendentious series-parallel model. Calculate the weighted mode hardness of 4 rocks. The results show that rocks with series-weighted Mohs hardness greater than 6.0 and parallel-weighted Mohs greater than 0.5 exhibit strong rockburst tendency with tandem-weighted Mohs hardness less than 4.0 and rocks with parallel-weighted Mohs hardness less than 0.3 Rock burst tendency. The test results show that the rockburst tendency of rock is mainly related to the microstructure, mineral composition and cleavage conditions of rock, and rock with strong and energy-storing minerals has strong rockburst tendency.