| 深埋隧洞开挖岩爆数值模拟与预测 |
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| 引用本文： | 陈文亮,章青,刘仲秋.深埋隧洞开挖岩爆数值模拟与预测[J].长江科学院院报,2012,29(5):40-44. |
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| 作者姓名： | 陈文亮 章青 刘仲秋 |
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| 作者单位： | 1. 浙江省水利河口研究院，杭州 310020； 2.河海大学 工程力学系，南京 210098； 3.山东农业大学，山东 泰安 271000 |
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| 基金项目： | 国家自然科学基金(50539090) |
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| 摘 要： | 为能更好地反映深埋隧洞岩爆的脆性破坏特征,在岩爆的数值模拟中采用了一个复合破坏准则弹脆塑性本构模型,并结合锦屏二级水电站辅助洞工程,综合运用各种判据和方法建立岩爆的预测体系,对开挖过程中岩爆的发生情况进行了预测,判定在洞肩和洞底角点处发生岩爆可能性较大,这与锦屏二级水电站辅助洞岩爆实际发生情况基本一致。对岩爆的预测具有一定的参考价值。
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| 关 键 词： | 深埋隧洞 脆性岩体 岩爆 数值模拟 预测 |
Numerical Simulation and Prediction of Rockburst in Deep Tunnel Excavation |
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| CHEN Wen-liang
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ZHANG Qing
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LIU Zhong-qiu.Numerical Simulation and Prediction of Rockburst in Deep Tunnel Excavation[J].Journal of Yangtze River Scientific Research Institute,2012,29(5):40-44. |
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| Authors: | CHEN Wen-liang ZHANG Qing LIU Zhong-qiu |
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| Affiliation: | 1. Zhejiang Institute of Hydraulics &; Estuary, Hangzhou 310020, China; 2. Department of Engineering Mechanics, Hohai University, Nanjing 210098, China; 3. Shandong Agricultural University, Taian 271000, China) |
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| Abstract: | In order to better reflect the characteristics of brittle failure of rockburst in deep tunnel,an elasto-brittle-plastic constitutive model based on combined failure criterion for brittle rock was employed in the numerical simulation of rockburst.A rockburst prediction system based on various criteria and methods was established to predict the rockburst during the excavation of the auxiliary tunnel of Jinping-II hydropower station.The analysis showed that rockburst was more possible to happen at the shoulder and bottom corner points of the tunnel,which was consistent with the in-situ actual observations. |
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| Keywords: | deep tunnel brittle rock rockburst numerical simulation prediction |
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