改进了用单轴压缩法计算圆柱形岩石强度的方法

IF 2.8 Q2 MINING & MINERAL PROCESSING Mining of Mineral Deposits Pub Date : 2023-03-30 DOI:10.33271/mining17.01.043
L. Vasyliev, M. Malich, D. Vasyliev, V. Katan, Zahar Rizo
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引用次数: 2

摘要

目的是改进考虑标准水平应力的柱状岩样强度计算分析技术。方法。考虑标准水平应力,采用4个试验特征(k为抗剪强度;为接触系数和内摩擦系数;Е为弹性模量),并将单轴压缩过程中得到的设计强度与实验数据进行对比。发现。该技术使柱状岩石样品的最大强度和残余强度的识别成为可能,使用四个性能指标,可以简单地通过实验来定义。在单轴压缩条件下获得的分析强度极限和实验数据的比较,支持了所提出的技术的高效率的想法。创意。首次建立了考虑标准水平应力、接触和内摩擦参数的截形楔破坏圆柱形岩样的解析模型。实际意义。该技术的优势在于可以将计算结果迅速应用于工业企业,因为工业企业的环境有助于应用简单的程序来确定岩石的物理力学特性指标,以确定地下结构的稳定性,并在露天矿和采矿和加工综合体中分解时减少能耗。
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Improving a technique to calculate strength of cylindrical rock samples in terms of uniaxial compression
Purpose is to improve analytical technique to calculate strength of cylindrical rock samples taking into consideration standard horizontal stresses. Methods. Mathematical modeling of cylindrical rock sample breakage under the truncated-wedge destruction was performed taking into consideration the standard horizontal stresses using four experimental characteristics (i.e. k being shear strength; fс and μ being contact and internal friction coefficients; and Е being elasticity modulus) as well as comparing the design strength with experimental data obtained in the process of uniaxial compression. Findings. The technique makes it possible to identify both maximum strength and residual strength of cylindrical rock samples using four indicators of properties which can be simply defined by experiment. Comparison of the analytical strength limits and experimental data, obtained in terms of uniaxial compression, supports the idea of high efficiency of the proposed technique. Originality. For the first time, analytical modeling of cylindrical rock sample breakage has been performed in terms of the truncated-wedge destruction taking into consideration the standard horizontal stresses as well as contact and internal friction parameters. Practical implications. The technique advantage is to apply promptly the calculation results in the context of industrial enterprises since their environment helps apply simple procedures to define indices of physiсomechanical characteristics of rocks for determination of stability of underground structures and reduction of energy consumption while disintegrating in open pits and mining and processing complexes.
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来源期刊
Mining of Mineral Deposits
Mining of Mineral Deposits MINING & MINERAL PROCESSING-
CiteScore
5.20
自引率
15.80%
发文量
52
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