应变型岩爆三要素分析及岩爆势表达

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摘要在已建立的应变型岩爆五因素综合判据基础上，通过现场地质调查、统计分析和运用关系矩阵法，对所涉多个因素和指标进行归类合并，形成包括最大切向应力，岩石抗拉强度和岩体完整性指数等3个主要独立参数的经验拟合表达式，用来表征岩爆趋势和强度(简称岩爆势 )。对岩爆强度的无、弱、中和强等4个级别，提出3个分级界限值(1.7，3.3和9.7)。概算深度H = 1 000和2 000 m(侧压系数 = 1.0)时结果分别为3.3和6.5，相当于弱岩爆上限值和中岩爆中间值。工程实例检验应用进一步表明该岩爆势指标的科学合理性。

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关键词 ：岩石力学, 岩爆, 地应力, 岩爆分级, 岩爆势, 界限值

Abstract：On the basis of the 5-factors comprehensive method for rockburst classification，the authors put forward an empirical criterion for expressing rockburst potential and intensity. The field investigation and statistic analyses are carried out with help of interaction matrix approach. The proposed criterion is called rockburst potential ，where is maximum value of shear stress in sides walls； is tensile strength； is the intactness index of rock mass. Corresponding to the 4 grades as intense，moderate，weak and no rockburst，the 3 boundary values are presented as 1.7，3.3 and 9.7. General calculation for depths of H = 1 000 and 2 000 m(lateral coefficient = 1.0)，the values are 3.3 and 6.5，corresponding to upper limit of weak rockburst，and median of moderate rockburst，respectively. Case studies for application show the feasibility and reliability of the index .

Key words： rock mechanics rockburst in-situ stress classification rockburst potential boundary values

收稿日期: 2012-11-05

引用本文:

尚彦军1，张镜剑2，傅冰骏3. 应变型岩爆三要素分析及岩爆势表达[J]. 岩石力学与工程学报, 2013, 32(8): 1520-1527.
SHANG Yanjun1，ZHANG Jingjian2，FU Bingjun3. ANALYSES OF THREE PARAMETERS FOR STRAIN MODE ROCKBURST AND EXPRESSION OF ROCKBURST POTENTIAL. , 2013, 32(8): 1520-1527.

链接本文:

http://www.rockmech.org/CN/Y2013/V32/I8/1520

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