Excavation Deformation Analysis of Deep-Cutting High Rock Slope

2011 ◽  
Vol 368-373 ◽  
pp. 219-224
Author(s):  
Lin Nie ◽  
De Pei Zhou
Keyword(s):  
Numerical Analysis ◽  
Rock Slope ◽  
Hydropower Station ◽  
Deformation Analysis ◽  
Deformation Characteristics ◽  
Dead Weight ◽  
Slope Excavation ◽  
Excavation Stability ◽  
High Rock Slope ◽  
Load Conditions

The mainly purpose of the paper is to investigate the slope excavation deformation of the rock slope at the deep-cutting valley under different load conditions. As an example of the rock slope at the intake of the sluice tunnel of Jinping hydropower station, whose slope deformation characteristics was system analyzed by numerical method during different construction conditions. The dead weight, rain, seism and theirs combination were involved in the numerical analysis. The numerical results could give a reference for the excavation stability of the high rock slope, and it is the basis to determine the reasonable construction method and to optimize the design of the strengthening and enhancing engineering.

scholarly journals Reliability Analysis of Rock Slope Excavation Considering the Stochasticity and Finite Persistence of Wedges

2018 ◽  
Author(s):  
Guilin Wang ◽  
Fan Sun ◽  
Qiuyuan Tang
Keyword(s):  
Theoretical Basis ◽  
Slope Failure ◽  
Rock Slope ◽  
Binary Particle Swarm Optimization ◽  
Swarm Optimization ◽  
Wedge Failure ◽  
The Monte Carlo Method ◽  
Slope Excavation ◽  
Simplified Method ◽  
Excavation Stability

With a focus on wedge failure during rock slope excavation and considering stochasticity and finite persistence based on a stochastic structural-plane network simulation and Lajtai’s rock resistance criteria, we present a simplified method combined with binary particle swarm optimization (BPSO) to calculate the shear strength of 3D rock masses. The probabilities of rock slope failure under excavation surfaces of various sizes were obtained using the Monte Carlo method. These probabilities can provide a theoretical basis for determining excavation stability. The approach was applied to a rock slope excavation project in Chongqing, China, and yielded satisfactory results. 

Rock Slope Stability Study of Numerical Analysis

2013 ◽  
Vol 753-755 ◽  
pp. 457-461
Author(s):  
Jing Jin ◽  
Jing Jiang
Keyword(s):  
Numerical Analysis ◽  
Research Method ◽  
Rock Slope ◽  
Stability Study ◽  
Comprehensive Analysis ◽  
Rock Slope Stability ◽  
Hydropower Station ◽  
Element Calculation ◽  
Analysis And Evaluation ◽  
Calculation Software

Combining the current research method of rock mass parameters, to the RuMei hydropower station in Tibet as the background, using the finite element calculation software, and using the two section for numerical analysis, considering all kinds of conditions under the condition of the simulated stress strain and displacement, the distribution of plastic failure, comprehensive analysis and evaluation of its stability.

Stability Analysis of Steep-High Rock Slope Based on Block Mechanical Theory — Case in Jiangping River Hydropower Station

2011 ◽  
Vol 361-363 ◽  
pp. 1689-1693 ◽  
Author(s):  
Lin Liu ◽  
Wei Ya Xu ◽  
Chong Shi
Keyword(s):  
Rock Slope ◽  
Limit Equilibrium ◽  
Geological Structure ◽  
Control Measures ◽  
Hydropower Station ◽  
Technical Problems ◽  
Hydroelectric Project ◽  
Geological Conditions ◽  
High Rock Slope ◽  
Structure Plane

Due to specific geological conditions, stability of complex high slopes has become one of the key technical problems in hydroelectric project. Especially for steep-high rock slope, it is hard to calculate the stability by normal rigid limit equilibrium method. Steep-high rock slope in Jiangping River hydropower station is taken for example. On the base of study of geological structure and judgment of preferred structure plane, simplified geological model is built up. The main deformation destruction mode and type are analyzed based on block theory, rock mechanics and other basic mechanics while the related critical values are calculated. So slope stability is discussed and corresponding control measures are worked out. This method can be used in following stability research of similar slope.

scholarly journals Deformation analysis of underground powerhouse of a large hydropower station based on FLAC3D

2021 ◽  
Vol 632 ◽  
pp. 042033
Author(s):  
Shuai Ma ◽  
Taosheng Huang ◽  
Xiaojun Bao ◽  
Zhiyuan Wang ◽  
Haotian Zhang ◽  
...  
Keyword(s):  
Hydropower Station ◽  
Deformation Analysis ◽  
Underground Powerhouse

scholarly journals Stability Analysis of Jointed Rock Slope by Strength Reduction Technique considering Ubiquitous Joint Model

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Ruili Lu ◽  
Wei Wei ◽  
Kaiwei Shang ◽  
Xiangyang Jing
Keyword(s):  
Rock Slope ◽  
Reduction Method ◽  
Domain Size ◽  
Jointed Rock ◽  
Strength Reduction ◽  
Hydropower Station ◽  
Strength Reduction Method ◽  
Vertical Side ◽  
The Stability ◽  
Jointed Rock Slope

In order to study the failure mechanism and assess the stability of the inlet slope of the outlet structure of Lianghekou Hydropower station, the strength reduction method considering the ubiquitous joint model is proposed. Firstly, two-dimension numerical models are built to investigate the influence of the dilation angle of ubiquitous joints, mesh discretization, and solution domain size on the slope stability. It is found that the factor of safety is insensitive to the dilation angle of ubiquitous joints and the solution domain size but sensitive to the mesh discretization when the number of elements less than a certain threshold. Then, a complex three-dimension numerical model is built to assess the stability of the inlet slope of the outlet structure of Lianghekou Hydropower station. During the strength reduction procedure, the progressive failure process and the final failure surface of the slope are obtained. Furthermore, the comparison of factors of safety obtained from strength reduction method and analytical solutions indicates that the effect of vertical side boundaries plays an important role in the stability of jointed rock slope, and the cohesive force is the main contribution to the resistant force of vertical side boundaries.

Sign in / Sign up

Export Citation Format

Share Document