| 基于岩石长期稳定性的工程寿命预估研究 |
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| 引用本文： | 王来贵,李磊,刘学,王建国.基于岩石长期稳定性的工程寿命预估研究[J].中国地质灾害与防治学报,2010,21(3):97-100. |
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| 作者姓名： | 王来贵 李磊 刘学 王建国 |
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| 作者单位： | 1. 辽宁工程技术大学,力学与工程学院,辽宁,阜新,123000
2. 煤炭科学研究总院沈阳研究院,辽宁,沈阳,110015 |
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| 基金项目： | 地质灾害防治与地质环境保护国家重点实验室开放基金资助项目，国家自然科学基金重点资助项目 |
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| 摘 要： | 为了从岩石蠕变特性的角度对岩石工程的时效作用进行理论研究,通过对改进的西原蠕变模型进行理论分析,模拟微分方程数值曲线,从而得出与时间相关的蠕变加速度失稳判据;结合蠕变模型第三阶段的非线性特性,采用趋近系数对蠕变稳定阶段进行预测,对于非衰减蠕变破坏,通过破坏倾斜角进行预估。揭示了岩石第三阶段蠕变失稳的机理和规律,为预测岩石工程的失稳破坏及其寿命预估提供新的理论依据。
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| 关 键 词： | 时效作用 蠕变模型 失稳判据 趋近系数 破坏倾斜角 工程寿命 |
Life expectation of an rock engineered slope based on the long-term stability |
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| WANG Lai-gui,LI Lei,LIU Xue,WANG Jian-guo.Life expectation of an rock engineered slope based on the long-term stability[J].The Chinese Journal of Geological Hazard and Control,2010,21(3):97-100. |
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| Authors: | WANG Lai-gui LI Lei LIU Xue WANG Jian-guo |
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| Institution: | 1.School of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000,China;2.Shenyang Branch of China Coal Research Institute,Shenyang 110015,China) |
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| Abstract: | In order to do theoretical study on time-effect combining of an engincered rock from the point of view of creep properties of rock,instability criterion of creep acceleration interrelated with time was proposed based on theoretical analysis of improved creep K-B model and simulation of differential equations of numerical curve.For forecasting the stable stage of creep using reaching coefficient in combination with nonlinear characteristics of the third stage of K-B model,the concept of failure of tilt angle was put forward for non attenuation creep failure.The paper revealed the mechanisms and rules of creep instability on the third stage of crock,and provided new theoretical basis for forecasting the instable failure and life prediction of rock engineering. |
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| Keywords: | time-effect creep model instability criterion reaching coefficient failure of tilt angle life of engineering |
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