欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
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σθ,岩石抗拉强度Rt和岩体完整性指数K v等3个主要独立参数的经验拟合表达式rb t vP（θ/R）K=σ,用来表征岩爆趋势和强度（简称岩爆势Pr b）。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λ=1.0）时Pr b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。
英文摘要：
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 Prb =（σθ/Rt）Kv, wheretrais maximum value of shear stress in sides walls; Rtis tensile strength; Kvis 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 ofH = 1 000 and 2 000 m（lateral coefficient 2, = 1.0）, the Prb 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 Prb.
同期刊论文项目
同项目期刊论文
期刊信息
位置：