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| 岩石热断裂破坏特性研究 | |
| 引用本文： | 谢卫红,高峰,李顺才.岩石热断裂破坏特性研究[J].北京科技大学学报,2007,29(9):863-868. |
| 作者姓名： | 谢卫红 高峰 李顺才 |
| 作者单位： | 1. 徐州空军学院机场工程系,徐州,221000 2. 中国矿业大学理学院,徐州,221008 3. 徐州师范大学电子工程学院,徐州,221011 |
| 基金项目： | 国家重点基础研究发展计划(973计划) , 国家自然科学基金 , 江苏省自然科学基金 |
| 摘 要： | 岩石的热膨胀是不可逆的,会受加热历史的影响,加热时的特性和冷却后的特性差异较大. 本文研究了温度载荷作用下岩石材料在压缩和拉伸时的热断裂破坏过程,分析了岩石热断裂破坏的宏观力学特性,探讨了岩石宏观热破坏作用机理. 根据岩石热破坏机理与岩石强度准则,计算了试件在各温度作用下受压和受拉破坏时产生的最大应力. 计算结果能较好地与实验结果吻合. |
| 关 键 词： | 岩石 热力学特性 断裂机理 实时实验 强度准则 断裂破坏 破坏特性 研究 rock failure characteristic fracture 实验 结果 最大应力 受拉破坏 受压 温度作用 试件 计算 岩石强度准则 破坏机理 作用机理 热破坏 宏观力学特性 分析 |
| 修稿时间： | 2006-04-24 |
Thermal fracture failure characteristic of rock |
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| XIE Weihong,GAO Feng,LI Shuncai.Thermal fracture failure characteristic of rock[J].Journal of University of Science and Technology Beijing,2007,29(9):863-868. | |
| Authors: | XIE Weihong GAO Feng LI Shuncai |
| Abstract: | Rock's heat inflation is an irreversible process,and it is influenced by heating history.There is a great characteristic difference during heating and after cooling.Real-time tests on the thermal fracture failure process of rock under uniaxial compressive and tension loading were carried out,the macro-mechanical properties of rock during thermal fracture failure were analyzed,and the thermal failure mechanism was discussed.According to the thermal fracture mechanism and its strength criterion,the maximum stress of samples was computed,and the results were in good agreement with the experimental. |
| Keywords: | rock thermal mechanical properties fracture mechanism real-time experiment strength criterion |
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