Sliding stability analysis of a gravity dam founded on a rock mass with an impersistent joint set

2014 ◽  
pp. 539-544
Author(s):  
M Cabrera ◽  
S Senent ◽  
C Olalla ◽  
R Jiménez
Keyword(s):  
Rock Mass ◽  
Stability Analysis ◽  
Gravity Dam ◽  
Sliding Stability

Stability Analysis of Gravity Dam on Soil Foundation

2014 ◽  
Vol 501-504 ◽  
pp. 79-82
Author(s):  
Li Hua Zhang ◽  
Li Xin Zhang ◽  
Su Zhen Cheng
Keyword(s):  
Stability Analysis ◽  
Gravity Dam ◽  
Soil Pressure ◽  
Sliding Stability ◽  
Water Conservancy Project ◽  
Water Conservancy ◽  
Soil Foundation ◽  
Deep Stratum ◽  
Selection Of

For small and medium sized water conservancy project, gravity dam on soil foundation is a comparatively economic and reasonable dam structure. Based on project case, the author discusses in this paper the seepage-proofing and anti-sliding stability of the gravity dam on soil foundation, focusing on calculation of anti-sliding stability of deep stratum, selection of soil pressure and effective measures for improving the anti-sliding stability of the gravity dam on soil foundation.

Numerical Research on the Gravity Dam Deep Anti-Sliding with Engineering Mechanics Based on Damage Theory

2014 ◽  
Vol 910 ◽  
pp. 289-296
Author(s):  
Shuang Liu ◽  
Qing Wen Ren ◽  
Chen Lu Zhou
Keyword(s):  
Rock Mass ◽  
Numerical Model ◽  
Damage Mechanics ◽  
Failure Process ◽  
Gravity Dam ◽  
Instability Criterion ◽  
Gravity Dams ◽  
Dam Foundation ◽  
Sliding Stability ◽  
Foundation Rock

Currently, researches on the gravity dam deep and shallow anti-sliding stability mainly focus on the analysis method and instability criterion, while the studies on specifically test the breakage of gravity dams due to weakening foundation rock mass and structural planes under loading are rare. Based on damage mechanics theory, this paper established a numerical model that analyzed the damage failure process of dam foundation rock mass. Taking two typical gravity dam models as the study objects, the damage processes of the dam foundations were simulated dynamically. Additionally, a comparison with other two traditional methods further validated the correctness and feasibility of the numerical model. In sum, the study findings point out that the numerical model is not only applicable to the study of the breakage mechanism of dam foundation rock mass, but also can be used as a new method to analyze problems related to deep anti-sliding stability of gravity dams.

Sliding stability analysis of gravity dam founded on rock mass with impersistent joint set

2015 ◽  
Vol 52 (11) ◽  
pp. 1668-1684 ◽  
Author(s):  
Miriam Cabrera ◽  
Salvador Senent ◽  
Claudio Olalla ◽  
Rafael Jimenez
Keyword(s):  
Rock Mass ◽  
Computational Cost ◽  
Gravity Dam ◽  
Flow Rule ◽  
Failure Path ◽  
Proposed Model ◽  
Sliding Stability ◽  
Potential Failure ◽  
Parametric Analyses ◽  
New Formulation

This article aims to evaluate the sliding stability of a gravity dam with a foundation failure mechanism characterized by a pre-existing subhorizontal joint set acting as a sliding plane, and with a potential failure path that extends through the rock mass. The safety factor is estimated using a combination of joints and rock mass strengths, using the criteria of Barton and Choubey and Hoek and Brown, respectively. Nonassociative flow rule in the rock mass has been incorporated using a constant dilation angle. The finite difference program FLAC 6.0 is employed to validate the model. The proposed analytical model provides results that are very similar to those computed with FLAC; however, as the new formulation can be implemented in a spreadsheet, the computational cost of the proposed model is significantly smaller, hence allowing to more easily conduct parametric analyses of the influence of the different input parameters on the dam’s safety.

Genetic Algorithm for Searching for Critical Slip Surface in Gravity Dams Based on Stress Fields

2013 ◽  
Vol 790 ◽  
pp. 146-149
Author(s):  
Jian Yun Chen ◽  
Shu Wang ◽  
Qiang Xu ◽  
Jing Li
Keyword(s):  
Genetic Algorithm ◽  
Slip Surface ◽  
Safety Evaluation ◽  
Fem Analysis ◽  
Stress Fields ◽  
Gravity Dam ◽  
Critical Slip Surface ◽  
Gravity Dams ◽  
Sliding Stability ◽  
Search Program

Currently, the safety evaluation of gravity dam concentrates on stress and anti-sliding stability of the dam. A lot of research shows that the upper area of the dam is one of the whole dams weakest areas during an earthquake and should be studied in details. In this study, the genetic algorithm and non-linear FEM analysis are combined, then a search program is written to search the critical slip surface in the dams upper area. Finally, the surface which has the least anti-sliding stability coefficient is obtained, the most dangerous slip surface and its anti-sliding coefficient as well as the corresponding time are acquired to evaluate the safety of the dam.

Study of Evaluation Method in Terms of Structural Planes Mechanical Characteristics in Engineering Rock Mass

2013 ◽  
Vol 353-356 ◽  
pp. 384-387 ◽  
Author(s):  
Mu Dan Guo ◽  
Fu Sheng Zhu ◽  
Shu Hong Wang ◽  
Xi Jiang Mu
Keyword(s):  
Rock Mass ◽  
Stability Analysis ◽  
Efficient Method ◽  
Weight Distribution ◽  
Evaluation Method ◽  
Mechanical Characteristics ◽  
Significant Issue ◽  
Analytic Hierarchy ◽  
Intensity Parameters ◽  
Hierarchy Process

Study of mechanical characteristics of structural planes has been significant issue in engineering rock mass stability analysis. The factors that affect the mechanical behavior of structural planes are so complicated that it is quite essential to take an efficient method to quantificationally analyze these factors. Based on the basic principals of analytic hierarchy process (AHP), a structural plane classification method-CSPC method is proposed. It can conduct weight distribution in terms of the complicated factors, assess the structural planes comprehensively and also forecast the planes intensity parameters semiquantitatively. The classification and forecast parameters of structural planes appropriately fit the cases in engineering. Furthermore, the method is easy to master for the engineers and the application can be of great prospect.

Stability Analysis and Control Measures of the Kim-Yun-Mine Collapse

2012 ◽  
Vol 594-597 ◽  
pp. 358-361
Author(s):  
Shan Shan Zhang ◽  
Yu Liang Wu
Keyword(s):  
Rock Mass ◽  
Stability Analysis ◽  
Stereographic Projection ◽  
Control Measures ◽  
Collapse Characteristics ◽  
Basic Characteristics ◽  
The Stability ◽  
Mine Collapse ◽  
And Control ◽  
Dangerous Rock Mass

Collapse is one of the major geological disasters all over the world and threats to life and property safety of people. To make a better understanding of the reason it occurs and how to deal with it, the Kim-Yun-Mine collapse is researched. There are one dangerous rock mass and two collapse accumulation body. The basic characteristics of the collapse is described clearly according to the geological exploration data, and the stability of the dangerous rock mass and the collapse accumulated body is analyzed in the way of engineering geology and stereographic projection. At last, we put forward comprehensive control measures based on the results of stability analysis and collapse characteristics.

Sign in / Sign up

Export Citation Format

Share Document