| 广义剪切活动准则 |
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| 引用本文： | 童亨茂 陈正乐 刘瑞珣. 广义剪切活动准则[J]. 自然杂志, 2015, 37(6): 441-447. DOI: 10.3969/j.issn.0253-9608.2015.06.007 |
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| 作者姓名： | 童亨茂 陈正乐 刘瑞珣 |
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| 作者单位： | 1.中国石油大学(北京)油气资源与探测国家重点实验室，北京 102249；2中国地质科学院地质力学研究所，北 京 100086；3北京大学地球与空间科学学院，北京 100871 |
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| 基金项目： | 国家自然科学基金 (41272160、40772086) 和国家油气重大专项(2011ZX05006-006-02-01、2011ZX5023-004012)资助 |
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| 摘 要： | 针对经典的剪切破裂准则(Coulomb-Mohr准则和以Byerlee律为代表的滑动摩擦律)存在局限，在Coulomb-Mohr准 则和Byerlee律的基础上，从产生剪切破裂的物理本质出发，应用先存构造活动性准则和活动趋势分析理论，提出 “广义剪 切活动准则”。该准则可以用来定量判断任意介质、在任意三轴应力状态下、任意方位界面(包括先存薄弱面和非薄弱面)发 生剪切活动的可能性，并把Coulomb-Mohr准则从均匀介质扩展到有先存构造的非均匀介质，从临界应力状态扩展到任意 应力状态，把Byerlee律为代表的滑动摩擦律从二维应力状态扩展到任意三轴应力状态，具有广阔的应用前景。
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| 关 键 词： | 剪切活动 先存构造 Coulomb-Mohr准则 Byerlee律 广义剪切活动准则 |
| 收稿时间： | 2015-09-23 |
Generalized shear activation criterion |
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| TONG Hengmao,CHEN Zhengle,LIU Ruixun. Generalized shear activation criterion[J]. Chinese Journal of Nature, 2015, 37(6): 441-447. DOI: 10.3969/j.issn.0253-9608.2015.06.007 |
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| Authors: | TONG Hengmao CHEN Zhengle LIU Ruixun |
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| Affiliation: | 1.Key National Laboratories of Oil and Gas Resources and Exploration, China University of Petroleum, Beijing 102249, China; 2.Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100086, China;3.School of Earth and Space Sciences, Peking University, Beijing 100871, China |
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| Abstract: | There are some limitations in classic shear fracture criteria such as Coulomb-Mohr criterion and sliding friction law represented by Byerlee law. On the base of Coulomb-Mohr criterion and Byerlee law, starting from the physical nature of shear fracture, and applying the activation criterion of pre-existing weakness and the theory of activation tendency analysis, a generalized shear activation criterion is proposed. The criterion can be used to quantitatively determine the probability of shear activation for any medium, any stress state, any orientation plane. It extends not only Coulomb-Mohr criterion from homogeneous media to inhomogeneous media with pre-existing weakness, but the sliding friction law represented by Byerlee law from 2D stress state to any triaxial stress state, and shows broad application prospects. |
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