岩体结构面剪切强度模型研究进展

发布时间：2019-08-05 14:57

【摘要】：结构面剪切强度是结构面最主要的力学性质。近半个世纪以来,相关领域学者对结构面剪切强度模型进行了深入研究,取得了丰硕成果。首先,系统地总结了结构面剪切强度模型研究现状,并介绍了各剪切强度模型的特点。然后从剪切强度的本质特征、实用性、研究热点对模型进行了分析评价。最后分析认为:(1)在结构面剪切强度影响因素中,形貌特征最为复杂、定量化最为困难,特别是在各向异性表征方面仍需做大量研究工作;(2)结构面形貌各向异性和尺寸效应表征参数的合理性需力学试验来验证,3D打印技术的应用,可有效解决岩体结构面不可重复试验的困难,有望在结构面各向异性、尺寸效应的室内试验研究方面取得突破性进展;(3)结构面剪切强度的各向异性和尺寸效应特征应进行统一辩证的研究,只有这样,获得的模型才能有助于准确估算工程岩体剪切强度。
[Abstract]:The shear strength of structural plane is the most important mechanical property of structural plane. In the past half century, scholars in related fields have deeply studied the shear strength model of structural plane, and achieved fruitful results. Firstly, the research status of shear strength model of structural plane is systematically summarized, and the characteristics of each shear strength model are introduced. Then the model is analyzed and evaluated from the essential characteristics and practicability of shear strength. Finally, it is considered that: (1) among the factors affecting the shear strength of the structural plane, the morphology is the most complex and the quantification is the most difficult, especially in the anisotropy characterization. (2) the rationality of structural plane morphology anisotropy and size effect characterization parameters needs to be verified by mechanical test. The application of 3D printing technology can effectively solve the difficulty of non-repeatable test of rock mass structural plane, and is expected to make breakthrough in the laboratory test research of structural plane anisotropy and size effect. (3) the anisotropy and size effect characteristics of shear strength of structural plane should be studied dialectically. Only in this way can the obtained model be helpful to accurately estimate the shear strength of engineering rock mass.
【作者单位】：内蒙古科技大学矿业研究院;
【基金】：国家自然科学基金项目(编号:51564038,51464036) 内蒙古自治区自然科学基金项目(编号:2015MS0548) 内蒙古科技大学优秀青年基金项目(编号:2016YQL04)
【分类号】：TU45

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