Abstract

An integrated method, covering the actual monitoring analysis, practical geological model, and theoretical mathematical simulation model, is systematically proposed and successfully applied. Deformation characteristic of a unique high rocky slope was firstly analyzed from multiple angles and multiple layers by changeable elevations and distances. Arrangements of monitoring points were listed and monitoring equipment was designed to comprise a complete monitoring system. Present larger displacement was concluded for bottom larger displacement caused by water erosion and middle larger displacement formed by seepage. Temporal and spatial displacements rule study of multiple-points linkage effects with water factor proved this conclusion. To better excavate useful message and analyze the deep rule from the practical monitoring data, the slope geological model was conducted and rock mechanic parameters were researched. Finally, a unique three-dimensional finite element model was applied to approach the structure character using numerical simulations. The corresponding strength criterion was used to determine the safety coefficient by selecting a typical section. Subsequently, an integrated three-dimensional finite element model of the slope and dam was developed and more detailed deformation evolution mechanism was revealed. This study is expected to provide a powerful and systematic method to analyze very high, important, and dangerous slopes.

Highlights

  • Since 1949, China has constructed approximately 85,000 dams, especially for huge hydropower projects, such as Sanxia, Xiaowan, Jinping, Tian Shengqiao, Xiluodu, Longtan, and Shuangjiangkou, which made China the largest hydropower producer of developing nations worldwide. It has resulted in many high slope problems [1]

  • The study of a high slope has become very popular in the geotechnical engineering field [2,3,4]

  • The finite element method (FEM) of numerical simulation technology was widely used for geotechnical engineering

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Summary

Introduction

Since 1949, China has constructed approximately 85,000 dams, especially for huge hydropower projects, such as Sanxia, Xiaowan, Jinping, Tian Shengqiao, Xiluodu, Longtan, and Shuangjiangkou, which made China the largest hydropower producer of developing nations worldwide It has resulted in many high slope problems [1]. To further reflect the deformation rule and obtain final conclusion supported by practical monitoring data, a three-dimensional finite element model of the slope and dam was applied to approach the structure character using numerical simulations [19, 20]. The whole deformation law of slope and dam was analyzed by a generalized three-dimensional finite element model

Arrangement of Monitoring Points
Deformation Analysis of Original Model Monitoring
Analysis of the Rock Mechanic Parameters
Determination of the Safety Factor for the Slope
Analysis of the Finite Element Model
Conclusions
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