Determining Time-to-Failure in Rocks Using Long-Term Strength Criterion

IF 0.7 4区工程技术 Q4 MINING & MINERAL PROCESSING

Journal of Mining Science Pub Date : 2023-12-01 DOI:10.1134/s1062739123060042

引用次数: 0

Abstract

The mathematical modeling of creep and long-term strength of rocks uses the non-associated flow rule. The authors propose a unified approach to the plasticity and creep processes. The theoretical calculations are compared with the testing data of different materials. In creep deformation in rocks, the applied problems on limit state of rock mass in plain strain are considered: pressure applied by a solid die block with flat bottom on rock mass limited by a horizontal plane and occupying the bottom part of a half-space; instability of pit wall or natural slope under different loads. These problems evaluate stresses in the limit state zones and the times-to-failure in rocks mass with regard to internal friction.

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利用长期强度标准确定岩石的破坏时间

摘要岩石蠕变和长期强度的数学建模采用非关联流动规则。作者提出了塑性和蠕变过程的统一方法。理论计算结果与不同材料的测试数据进行了比较。在岩石的蠕变变形中，考虑了岩体在平应变下的极限状态应用问题：平底实心模块对受水平面限制并占据半空间底部的岩体施加的压力；坑壁或天然斜坡在不同荷载下的不稳定性。这些问题评估了极限状态区域的应力和岩体内部摩擦的破坏时间。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Mining Science 工程技术-矿业与矿物加工

CiteScore

1.70

自引率

25.00%

发文量

审稿时长

24 months

期刊介绍： The Journal reflects the current trends of development in fundamental and applied mining sciences. It publishes original articles on geomechanics and geoinformation science, investigation of relationships between global geodynamic processes and man-induced disasters, physical and mathematical modeling of rheological and wave processes in multiphase structural geological media, rock failure, analysis and synthesis of mechanisms, automatic machines, and robots, science of mining machines, creation of resource-saving and ecologically safe technologies of mineral mining, mine aerology and mine thermal physics, coal seam degassing, mechanisms for origination of spontaneous fires and methods for their extinction, mineral dressing, and bowel exploitation.