节理岩体边坡破坏路径的等效计算研究

doi:10.13722/j.cnki.jrme.2019.0650

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摘要节理岩体的破裂路径一直是岩石力学及工程地质领域的一个热点及难点问题，如何快速、准确地计算岩体的破裂路径，具有重大的理论及工程意义。引入流场理论，将应力在岩体中的传递过程等效为流体的流动，提出一种基于流场理论的节理岩体破裂路径等效分析计算方法。首选，基本等效分析原理，从理论上验证了流场理论应用于节理岩体应力场计算的可行性；然后，利用绕流理论，对节理应力场的分布进行流场分析，表明节理端部存在流场的扰流区域及反向流动区域，从流场的角度验证了节理端部的应力集中及拉应力区的形成；最后，根据流场集中区分布，提出了节理破裂路径的确定方法，并通过试验验证了基于流场理论的节理岩体破裂路径计算方法。

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	朱雷1
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	黄润秋2
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	何思明1

关键词 ：岩石力学, 节理岩体, 破裂路径, 流场理论, 等效计算

Abstract：The fracture path of jointed rock masses has always been a hot and difficult problem in the fields of rock mechanics and engineering geology，and how to quickly and accurately calculate the fracture path of rock masses is of great significance in theory and engineering. In the present paper，a new method to determine the fracture path of jointed rock masses，taking the stress transmission in rock mass as fluid flow，is proposed based on flow field theory，and the feasibility of applying the flow field theory to the calculation of the stress field of jointed rock masses is verified based on the principle of equivalent analysis. The flow field analysis around the joint by using the theory of flow shows that there exists a flow region and a reverse flow area at the end of the joint，which verifies the stress concentration and the formation of tensile stress zone at end of the joint from the angle of the flow field. Finally，a method for determining the fracture path of rock masses is proposed according to the distribution of flow field concentrated zone and verified by the model test.

Key words： rock mechanics')" href="#">

rock mechanics jointed rock mass fracture path flow field theory ')" href="#">equivalent calculation

引用本文:

朱雷1，2，黄润秋2，陈国庆2，何思明1. 节理岩体边坡破坏路径的等效计算研究[J]. 岩石力学与工程学报, 2020, 39(1): 22-33.
ZHU Lei1，2，HUANG Runqiu2，CHEN Guoqing2，HE Siming1. Equivalent calculation of the fracture path of jointed rock masses based on flow theory#br#. , 2020, 39(1): 22-33.

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http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2019.0650 或 http://www.rockmech.org/CN/Y2020/V39/I1/22

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