岩爆倾向性指标及其相互关系探讨

发布时间：2018-06-12 01:47

本文选题：岩爆倾向性 + 评价指标　；参考：《岩土力学》2017年05期

【摘要】：岩石岩爆倾向性评价是地下工程岩爆风险评估的基础,评价指标众多,且各有特点,应用存在误区。在澄清岩爆倾向性概念的基础上,通过系统文献调研,对岩爆倾向性评价指标进行了归纳和分类,从获取方法的角度重点分析了岩爆倾向性指数W_(et)和强度脆性系数B。针对W_(et)获取中卸载点难以准确控制的传统难题,建议了以体积应变反弯点作为卸载控制点的试验方法,试验结果表明,该方法科学、有效。基于对岩石W_(et)和B值的充分调研总结,分析了二者的相互关系,改进了B值评价标准,为更科学合理地评价岩石岩爆倾向性奠定了坚实基础。
[Abstract]:The evaluation of rock burst tendency is the basis of rock burst risk assessment of underground engineering. There are many evaluation indexes and each characteristic and application misunderstanding. On the basis of clarifying the concept of rock burst tendentiousness, through systematic literature investigation, the evaluation indexes of rockburst tendency are summarized and classified, and the rock burst tendency is emphatically analyzed from the angle of obtaining method. The sex index W_ (ET) and the strength brittleness coefficient B. are difficult to accurately control the unload point in the W_ (ET). The experimental method of taking the volume strain back point as the unloading control point is suggested. The test results show that the method is scientific and effective. Based on the full investigation and summary of the W_ (ET) and B values of rock, the relationship between the two is analyzed, and the relationship between them is analyzed. The evaluation criteria of B value have laid a solid foundation for more scientific and reasonable evaluation of rock burst proneness.
【作者单位】：中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室;
【基金】：国家自然科学基金(No.51279201) 国家重点基础研究发展计划(973)项目(No.2014CB046902)~~
【分类号】：TU45

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