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| Dynamic response analysis of an upstream tailing dam under earthquake |
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Received:January 06, 2022
Revised:March 01, 2022
Accepted:March 04, 2022
Published Online:June 10, 2022
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| DOI： |
| KeyWord:ABAQUS；Upstream tailing dam；Dynamic analysis；Dynamic displacement ；Response acceleration ；Dynamic stress ；liquefied |
| Author | Institution |
| GONG Xingyong |
昆明理工大学 电力工程学院 |
| WANG Mingming |
昆明理工大学 电力工程学院 |
| YANG Shuanggang |
昆明理工大学 电力工程学院 |
| HU Shengming |
湖南省水利水电勘测设计规划研究总院有限公司 |
| GOU Chao |
昆明理工大学 电力工程学院 |
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| Abstract: |
| Due to the special damming methods and materials of the tailings dam, the dam body is easy lose stability and is damaged under the action of the earthquake, which poses a threat to the life and property of downstream residents. Aiming at the dynamic response of tailings dam, based on the finite element analysis method, the dynamic response of tailings dam is analyzed by using the equivalent linear principle. The dynamic displacement, response acceleration, dynamic stress, and liquefaction distribution of an upstream tailings dam under seismic load are analyzed and calculated. The calculation results show that the tailings dam is in a stable state under the static action. The maximum acceleration amplification factor along the river appears at the node of 3h/4 dam height. The maximum principal stress and minimum principal stress of the accumulation dam are compressive stress. The maximum dynamic displacement of the dam body along the river and vertically is small. The post-processing program is written in MATLAB language to generate the dam liquefaction area under different seismic time histories. The results show that the liquefaction area is mainly concentrated in the shallow area of the sedimentary beach below the phreatic line and does not penetrate the whole dam. |
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