scholarly journals Stability investigation and stabilization of a heavily fractured and loosened rock slope during construction of a strategic hydropower station in China

2017 ◽  
Vol 221 ◽  
pp. 70-81 ◽  
Author(s):  
Tao Chen ◽  
Jianhui Deng ◽  
Nicholas Sitar ◽  
Jun Zheng ◽  
Tiexin Liu ◽  
...  
Keyword(s):  
Rock Slope ◽  
Hydropower Station ◽  
Stability Investigation

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.

Rock slope deformation mechanism in the Cihaxia Hydropower Station, Northwest China

2014 ◽  
Vol 74 (3) ◽  
pp. 943-958 ◽  
Author(s):  
Zelin Zhang ◽  
Gao Liu ◽  
Shuren Wu ◽  
Huiming Tang ◽  
Tao Wang ◽  
...  
Keyword(s):  
Deformation Mechanism ◽  
Rock Slope ◽  
Northwest China ◽  
Slope Deformation ◽  
Hydropower Station

Mechanism of toppling and deformation in hard rock slope: a case of bank slope of Hydropower Station, Qinghai Province, China

2019 ◽  
Vol 16 (4) ◽  
pp. 924-934 ◽  
Author(s):  
Jun-chao Cai ◽  
Neng-pan Ju ◽  
Run-qiu Huang ◽  
Da Zheng ◽  
Wei-hua Zhao ◽  
...  
Keyword(s):  
Rock Slope ◽  
Hard Rock ◽  
Hydropower Station ◽  
Qinghai Province ◽  
Bank Slope

scholarly journals Stability Assessment of the Excavated Rock Slope at the Dagangshan Hydropower Station in China Based on Microseismic Monitoring

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
K. Ma ◽  
N. W. Xu ◽  
Z. Z. Liang
Keyword(s):  
Rock Mass ◽  
Slope Stability ◽  
Monitoring System ◽  
Rock Slope ◽  
Rock Slope Stability ◽  
Hydropower Station ◽  
Bank Slope ◽  
The Stability ◽  
The Right ◽  
Dagangshan Hydropower Station

A high-resolution microseismic (MS) monitoring system was implemented at the right bank slope of the Dagangshan hydropower station in May 2010 to analyse the slope stability subjected to continuous excavation. The MS monitoring system could real-time capture a large number of seismic events occurring inside the rock slope. The identification and delineation of rock mass damage subject to excavation and consolidation grouting can be conducted based on the analysis of tempospatial distribution of MS events. However, how to qualitatively evaluate the stability of the rock slope by utilizing these MS data remains challenging. A damage model based on MS data was proposed to analyse the rock mass damage, and a 3D finite element method model of the rock slope was also established. The deteriorated mechanical parameters of rock mass were determined according to the model elements considering the effect of MS damage. With this method, we can explore the effect of MS activities, which are caused by rock mass damage subjected to excavation and strength degradation to the dynamic instability of the slope. When the MS damage effect was taken into account, the safety factor of the rock slope was reduced by 0.18 compared to the original rock slope model without considering the effect. The simulated results show that MS activities, which are subjected to excavation unloading, have only a limited effect on the stability of the right bank slope. The proposed method is proven to be a better approach for the dynamical assessment of rock slope stability and will provide valuable references for other similar rock slopes.

Systems Engineering Problems Related to Slope Ecological Protection Engineering

2013 ◽  
Vol 368-370 ◽  
pp. 199-203
Author(s):  
Yue Shu Yang ◽  
Zhen Yao Xia ◽  
Shi Zhou ◽  
Hai Xiao ◽  
Bin Wu ◽  
...  
Keyword(s):  
Systems Engineering ◽  
Rock Slope ◽  
Hydropower Station ◽  
Ecological Protection ◽  
Engineering Problems ◽  
Basic Concepts ◽  
Protection Engineering

From the basic concepts and principles of systems engineering, the course system related to the slope ecological protection engineering is analayzed, which is a typical systems engineering. Talking the rock slope ecological protection engineering at Guizhou Guangzhao Hydropower Station for example, the application of systems engineering in the slope ecological protection engineering is researched. Using the technology of vegetation-growing concrete, the plan of protection and revegetation for this slope is turned out. It shows that systems engineering has a good applicability to slope ecological protection engineering.

Comparative Analysis of Reinforcement Programs of System Anchors for Unloading Rock Slope

2011 ◽  
Vol 374-377 ◽  
pp. 2312-2315
Author(s):  
Yi Sheng Huang ◽  
Qi Jun Zhu ◽  
Li Jun Zhang
Keyword(s):  
Rock Mass ◽  
Comparative Analysis ◽  
Constitutive Model ◽  
Rock Slope ◽  
Slope Deformation ◽  
Hydropower Station ◽  
Nonlinear Elastic ◽  
The Impact

Based on hyperbolic nonlinear elastic constitutive model of unloading rock mass, the anchoring rock mass of excavation spillway of a hydropower station has been taken for the study. And considering the impact of excavation unloading process, three reinforcement programs are compared and analyzed. Overall, the constraint by system anchors on deformation of the spillway slope is limited. If the limit on the slope deformation is higher, pre-stressed cables are necessary.

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.

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