| 高围压高水压条件下大理岩卸围压变形破坏与能量特征 |
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| 引用本文： | 张雪颖,阮怀宁.高围压高水压条件下大理岩卸围压变形破坏与能量特征[J].水利水电科技进展,2009,29(5):5-8. |
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| 作者姓名： | 张雪颖 阮怀宁 |
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| 作者单位： | 1. 河海大学岩土力学研究所,江苏,南京,210098;南京工程学院建筑工程系,江苏,南京,211167
2. 河海大学岩土力学研究所,江苏,南京,210098 |
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| 基金项目： | 国家重点工程项目，国家自然科学重点基金，国家自然科学基金，南京工程学院科研基金 |
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| 摘 要： | 利用伺服机对大理岩进行高围压及高围压高水压岩石的卸荷力学试验。基于试验结果,研究岩样卸围压的变形破坏及其能量特征。结果表明:①大理岩峰前卸荷比峰后卸荷表现出更大的脆性;②孔隙水压力加速了岩石的脆性破裂,降低了岩石的强度;③高围压情况下卸荷比低围压情况下卸荷更容易使岩体发生破坏。
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| 关 键 词： | 岩石 卸荷力学试验 高围压 变形破坏 能量特征 |
| 修稿时间： | 2009/10/21 0:00:00 |
Unloading deformation failure and energy properties of marble under high confining pressure and high water pressure |
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| ZHANG Xue-ying,RUAN Huai-ning.Unloading deformation failure and energy properties of marble under high confining pressure and high water pressure[J].Advances in Science and Technology of Water Resources,2009,29(5):5-8. |
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| Authors: | ZHANG Xue-ying RUAN Huai-ning |
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| Abstract: | Using the RMT-150B servo-controlling testing machine,unloading mechanical tests of marble under high confining pressure and high water pressure conditions were carried out.Based on the experimental results,the unloading deformation failure and energy properties of marble specimens were studied.The results show that marble unloaded before the peak is more brittle than marble unloaded after the peak.The pore water pressure accelerates the brittle fracture of rocks and also reduces their strength.When the marble is unloaded,it is easier to damage under high confining pressure than under low confining pressure. |
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| Keywords: | rock unloading mechanical test high confining pressure deformation failure energy feature |
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