| 引水隧洞工程中热应力对围岩表层稳定性的影响分析 |
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| 引用本文： | 王贤能,黄润秋.引水隧洞工程中热应力对围岩表层稳定性的影响分析[J].地质灾害与环境保护,1998(1). |
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| 作者姓名： | 王贤能 黄润秋 |
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| 作者单位： | 成都理工学院工程地质研究所 |
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| 摘 要： | 岩石中的热应力作用，是岩石热学问题中的一个重要研究内容。热应力由温度变化造成，温度的周期性变化引起热应力的周期性变化，热应力周期性作用导致岩石的疲劳破坏。以雅砻江锦屏水电站深埋引水隧洞为例，分析隧洞围岩温度场的分布特征，根据热应力交变作用特点，提出岩石的疲劳破坏判据，并利用这个判据分析热应力作用下隧洞围岩表层的破坏特点。
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| 关 键 词： | 引水隧洞 温度场 热应力 疲劳破坏 围岩表层剥落 |
INFLUENCE OF THERMAL STRESS ON THE SURFACE STABILITY OF SURROUNDING ROCK IN A DIVERSION TUNNEL |
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| Wang Xianneng\ Huang Runqiu.INFLUENCE OF THERMAL STRESS ON THE SURFACE STABILITY OF SURROUNDING ROCK IN A DIVERSION TUNNEL[J].Journal of Geological Hazards and Environment Preservation,1998(1). |
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| Authors: | Wang Xianneng\ Huang Runqiu |
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| Abstract: | Thermal stress effect is an important research aspest in rock thermology. In the surrounding rock of diversion tunnel, the temperature varaies with the water cyclically varation. Moreover, the thermal stress, which is an alternating stress caused by the varation of temperature, may induce fatigue failure of rock. In this paper, the distribution of temperature field and the thermal stress of Jinping diversion tunnel are analysed, and the mechanism and creterion of fatigue failure are also discussed. |
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| Keywords: | Diversion tunnel Temperature field Thermal stress Fatigue failure Spalling of surrounding rock |
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