| 软岩三维粘弹塑性参数辨识研究 |
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| 引用本文： | 董志宏,丁秀丽,邬爱清.软岩三维粘弹塑性参数辨识研究[J].长江科学院院报,2008,25(5). |
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| 作者姓名： | 董志宏 丁秀丽 邬爱清 |
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| 作者单位： | 长江科学院,水利部岩土力学与工程重点实验室,武汉,430010 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项，国家自然科学基金 |
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| 摘 要： | 以某水电站地下厂房区软岩部位试验洞监测资料为基础,运用基于均匀设计一遗传算法一神经网络的人工智能反演分析方法,在考虑了仪器埋设滞后的位移损失的情况下,对岩体在宏观结构条件下的流变参数进行三维粘弹塑性位移反分析,得到了岩体的流变参数并进行了位移预测.与监测成果进行了对比分析.结果表明:预测围岩流变位移、速率与监测结果比较接近,规律性较好,说明辨识效果较好.
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| 关 键 词： | 软岩流变 参数辨识 三维粘弹塑性模型 监测位移修正 位移反分析 |
3D Viscoelastic-plastic Parameters Identification of Soft Rockmass |
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| DONG Zhi-hong,DING Xiu-li,WU Ai-Qing.3D Viscoelastic-plastic Parameters Identification of Soft Rockmass[J].Journal of Yangtze River Scientific Research Institute,2008,25(5). |
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| Authors: | DONG Zhi-hong DING Xiu-li WU Ai-Qing |
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| Affiliation: | DONG Zhi-hong,DING Xiu-li,WU Ai-Qing(Key Laboratory of Geotechnical Mechanics , Engineering of the Ministry of Water Resources,Yangtze River Scientific Research Institute,Wuhan 430010,China) |
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| Abstract: | Parameters identification of rheological constitutive model is an important content of geological rheology.On the basis of the in-situ measuring displacement information of the test cavity surrounding rock of some hydroelectric station underground powerhouse,rockmass rheological parameters are identified through 3D viscoelastic-plastic numerical analysis and intelligence method that include uniform design (UD),BP artificial neural network(BP-ANN) and genetic algorithm(GA).And then the surrounding rock mass ... |
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| Keywords: | soft rockmass creep Parameters identification 3D viscoelastic-plastic model modification of monitoring displacements displacement back analysis |
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