scholarly journals The numerical simulation on the stability of steep rock slope by DDA

2017 ◽  
Author(s):  
Jianye Zhu ◽  
Yiguo Xue ◽  
Yufan Tao ◽  
Kai Zhang ◽  
Zhiqiang Li ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Rock Slope ◽  
The Stability

Numerical Simulation Study on High Dip Bedded Soft Rock Slope Stability of Surface Mine

2013 ◽  
Vol 868 ◽  
pp. 391-394
Author(s):  
Bao Yong Liu ◽  
Di Yang
Keyword(s):  
Numerical Simulation ◽  
Rock Slope ◽  
Soft Rock ◽  
Scientific Basis ◽  
Control Measures ◽  
Rock Slope Stability ◽  
Surface Mine ◽  
Deformation And Fracture ◽  
The Stability ◽  
Fracture Processes

According to the actual progress of a certain Surface Mine and based on strength reduction method, the deformation and fracture processes of the high dip bedded soft rock slope was simulated with RFPA-SRM, the stability of the slope was calculated. By analyzing the numerical simulation results, the characters of the deformation of high dip bedded soft rock slope and the landslide mode were demonstrated, which could provide a scientific basis for reasonable landslide control measures.

Numerical simulation on the stability of rock slope based on an improved SPH Method

2021 ◽  
Vol 18 (7) ◽  
pp. 1937-1950
Author(s):  
Shu-yang Yu ◽  
Xu-hua Ren ◽  
Ji-xun Zhang ◽  
Hai-jun Wang ◽  
Zhao-hua Sun ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Rock Slope ◽  
Sph Method ◽  
The Stability ◽  
Stability Of Rock Slope

Numerical Simulation of Fractured Rock Slope with Shear-Slip Behavior

2014 ◽  
Vol 548-549 ◽  
pp. 673-677
Author(s):  
Qin Gao ◽  
Gui He Wang
Keyword(s):  
Numerical Simulation ◽  
Rock Slope ◽  
Pore Water Pressure ◽  
Fractured Rock ◽  
Water Pressure ◽  
Analysis Method ◽  
Element Simulation ◽  
Slip Planes ◽  
Shear Slip ◽  
The Stability

The development of shear-slip cracks and motion trend of fracture water were presented for discussing the shear-slip behavior and analyzing the stability of fractured rock slope under hydraulic action. Seepage behavior of epigenetic cracks and the positions of slip or collapse were also investigated by monitoring pore water pressure using DEM. The analysis method of discrete element simulation for fractured rock slope was proposed. The results of numerical simulation indicated that interpenetrating fractures are more likely to be slip planes.

scholarly journals Particle Swarm Optimization Algorithm in Numerical Simulation of Saturated Rock Slope Slip

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Bowen Liu ◽  
Zhenwei Wang ◽  
Xiaoyong Zhong
Keyword(s):  
Numerical Simulation ◽  
Particle Swarm Optimization ◽  
Optimization Algorithm ◽  
Rock Slope ◽  
Particle Swarm Optimization Algorithm ◽  
Particle Swarm ◽  
Pso Algorithm ◽  
Swarm Optimization ◽  
Saturated Rock ◽  
The Stability

With the continuous popularization and development of highway traffic in mountainous areas, the number of rock slopes is also increasing. In order to improve the stability of rock slope and reduce the harm caused by slope slip, this paper carries out numerical simulation of rock slope sliding based on particle swarm optimization algorithm. Firstly, this paper combines the differential evolution algorithm and simplex method to improve the global and local search ability of particle swarm optimization (PSO) algorithm and analyzes the performance of the algorithm. ABAQUS software is used to simulate rock slope sliding, the finite element method is used to analyze the stability of rock slope, and LS-DYNA program is used to simulate rockfall impact rock slope. During the numerical simulation, the improved algorithm is used to analyze all the data. Experimental data show that the improved PSO algorithm converges after nearly 100 iterations and the convergence speed and optimization accuracy are high. In the numerical simulation, the average failure probability of the left and right sides of the main section at the top, middle, and foot of the slope is 0.0820 and 0.0723, 0.0772 and 0.0492, and 0.0837 and 0.0677, respectively, indicating that the overall instability probability of the left side of the rock slope is higher than that of the right side. The rock slope with the same direction through joint is mainly affected by the joint at the toe of the slope, the rock slope with reverse through joint is mainly affected by the joint in the slope, and the sliding occurs from the middle to both ends. In addition, with the increase of the size and height of rockfall, the total energy of rock slope is also increasing, and the possibility and degree of rock slope sliding are higher. This shows that the improved particle swarm optimization algorithm can effectively analyze some factors affecting slope slip in numerical simulation of saturated rock slope slip.

Study of Stability Analysis and Reinforcing Technique on Counterrendency Fracture Rock Slope

2011 ◽  
Vol 90-93 ◽  
pp. 692-700
Author(s):  
Hou Li Fu ◽  
Chun Hui Qin ◽  
Jie Han
Keyword(s):  
Numerical Simulation ◽  
Stability Analysis ◽  
Rock Slope ◽  
Slope Parameter ◽  
Rock Slopes ◽  
Fracture Rock ◽  
Retaining Structure ◽  
Stability Of Slope ◽  
The Stability

According to the essential features of countertendency fracture rock slopes and the geology condition of engineering. The stability of slope is calculated and evaluated by the following methods, including the stability analysis of slope with multiple-steps and Goodman-Bray's stability analysis of toppling slope. Moreover, we can put forward retaining structure which is based on grid beam, this is rely on results that have calculated according to the above theory, such as the characteristics of slope, parameter of rock and supporting density, and simulation the retaining structure in the method of numerical simulation.

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.

STABILITY OF TWO TYPICAL COMPLEX DYNAMICAL NETWORKS

2008 ◽  
Vol 22 (05) ◽  
pp. 553-560 ◽  
Author(s):  
WU-JIE YUAN ◽  
XIAO-SHU LUO ◽  
PIN-QUN JIANG ◽  
BING-HONG WANG ◽  
JIN-QING FANG
Keyword(s):  
Numerical Simulation ◽  
Dissipative System ◽  
Small World ◽  
Complex Dynamical Networks ◽  
Dynamical Networks ◽  
Scale Free ◽  
Scale Free Networks ◽  
General Complex ◽  
The Stability ◽  
Theoretical Results

When being constructed, complex dynamical networks can lose stability in the sense of Lyapunov (i. s. L.) due to positive feedback. Thus, there is much important worthiness in the theory and applications of complex dynamical networks to study the stability. In this paper, according to dissipative system criteria, we give the stability condition in general complex dynamical networks, especially, in NW small-world and BA scale-free networks. The results of theoretical analysis and numerical simulation show that the stability i. s. L. depends on the maximal connectivity of the network. Finally, we show a numerical example to verify our theoretical results.

The Compliance Method for Measurement of Near Surface Residual Stresses—Analytical Background

1994 ◽  
Vol 116 (4) ◽  
pp. 550-555 ◽  
Author(s):  
M. Gremaud ◽  
W. Cheng ◽  
I. Finnie ◽  
M. B. Prime
Keyword(s):  
Numerical Simulation ◽  
Residual Stresses ◽  
Random Errors ◽  
Residual Stress Field ◽  
Near Surface ◽  
Surface Residual Stresses ◽  
Zero Shift ◽  
Stress States ◽  
The Stability ◽  
Piecewise Functions

Introducing a thin cut from the surface of a part containing residual stresses produces a change in strain on the surface. When the strains are measured as a function of the depth of the cut, residual stresses near the surface can be estimated using the compliance method. In previous work, the unknown residual stress field was represented by a series of continuous polynomials. The present paper shows that for stress states with steep gradients, superior predictions are obtained by using “overlapping piecewise functions” to represent the stresses. The stability of the method under the influence of random errors and a zero shift is demonstrated by numerical simulation.

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