| 任建兴.单轴压缩条件下岩石峰后第Ⅱ种类型应力—应变曲线的新解释[J].矿产勘查,2020,11(2):232-236 |
| 单轴压缩条件下岩石峰后第Ⅱ种类型应力—应变曲线的新解释 |
| New explanation of the second type stress-strain curve after the rock peak under uniaxial compression |
| 投稿时间：2019-06-16 |
| DOI： |
| 中文关键词: 应力-应变曲线 单轴压缩 岩石峰后曲线 能量守恒 |
| 英文关键词: stress-strain curve, uniaxial compression,rock post-peak curve,conservation of energy |
| 基金项目: |
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| 摘要点击次数: 2160 |
| 全文下载次数: 76 |
| 中文摘要: |
| 研究岩石试件在单轴压缩(无侧限状态)条件下的应力—应变全过程曲线,对岩体力学的发展以及工程实际应用都有重要的意义。Wawersik等人通过对6种不同岩石所作的单轴压缩试验的结果,把岩石的破坏划分为两种类型,即稳定破裂型(第Ⅰ类岩石)和非稳定破裂型(第Ⅱ类岩石)。然而对第Ⅱ类岩石峰后曲线是否合理国内外至今并没有定论,并且有人认为所谓的Ⅱ型曲线是由人为控制造成的,实际上并不存在。本文根据国内外目前的试验成果,从试验的控制条件以及能量守恒的观点等两个角度出发,对Ⅱ型曲线的存在与否提出了一定新见解,以此希望能达到抛砖引玉的效果。 |
| 英文摘要: |
| The research on the whole process of rock sample stress-strain curve under uniaxiasl pressure of great importance to both the development of rock mechanics and practical application. By analysing the results of uniaxial compression experiment of six different rocks,Waversik divided rock failure into two categories,namely,stable failure( the first kind of rock)and unstable failure(the second kind of rock). Argument about whether the post-peak curve of the second kind of rock are sound has not been settled. Some think that the so-called second kind of curve is brought by human factor,it doesn`t exist. In the article,another view is given by analysing current test-results from at home and abroad from angles of conservation of energy and the control of test conditions in the hope of serving as a catalyst to spur more views on this issue. |
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