Study on mechanism of reservoir valley width deformation during impoundment of Xiluodu arch dam

被引：0
|
作者：
Wang Y. [1 ]
Yang Q. [1 ]
Zhang M. [1 ]
Wang T. [1 ]
Liu Y. [1 ]
机构：
[1] State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2023年 / 42卷 / 05期
基金：
国家自然科学基金重点项目; 中国国家自然科学基金;
关键词：
deformation reinforcement theory; hydraulic engineering; structural plane; valley deformation; Xiluodu arch dam;
D O I：
10.13722/j.cnki.jrme.2022.0670
中图分类号：
学科分类号：
摘要：
The mechanism of the deformation of Xiluodu Valley is still controversial，which is a key problem in the current engineering field. Based on the comparative analysis of Jinping I and Xiluodu valley deformation，the valley deformation of Xiluodu shows the feature of large value，large scale and integration. In this paper，we adopt the elasto-plastic method of deformation reinforcement theory as the approximation of visco-plastic method，and take the pore elastoplastic effective stress and the hydrogeological structure of Xiluodu Reservoir area into account. The key location which controls the Xiluodu valley deformation is studied by analysing the unbalanced force，which drives the plastic deformation of structure. The results indicate that the unbalanced force caused by the increase of pore pressure after impoundment is mainly concentrated in the basaltic layer and the interlayer dislocation plane at the bottom of the valley，that could drive the rock mass to produce large-scale deformation along the layers and may be the primary mechanism of the structural valley deformation of Xiluodu. © 2023 Academia Sinica. All rights reserved.
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页码：1083 / 1095
页数：12
相关论文
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