Discrete Element Simulation Analysis of Rock Slope Stability Based on UDEC

2012 ◽  
Vol 461 ◽  
pp. 384-388 ◽  
Author(s):  
Wei Lu ◽  
Zhi Zhou ◽  
Ting Liu ◽  
Yu Hang Liu
Keyword(s):  
Slope Stability ◽  
Simulation Analysis ◽  
Discrete Element ◽  
Simulation Software ◽  
Rock Slope Stability ◽  
Three Dimension ◽  
Rock Mass Structure ◽  
Deformation And Failure ◽  
Failure Patterns ◽  
Geological Conditions

K148+380-480 section of some certain highway is high layered dip cut slope. Weak surfaces, joints and damping load tension fissures of steep dip have significant effect on slope stability during excavation. The geological conditions and rock mass structure characteristics of the slope are analyzed in the paper. Failure patterns and deformation processes are simulated with UDEC discrete element numerical simulation software based on three-dimension (3D) and two-dimension (2D) discrete element method respectively. Besides, key factors that control slope deformation and failure are discussed.

Research on Technology of Abandoned Quarry Complex Rock Slope Stability Calculation

2014 ◽  
Vol 638-640 ◽  
pp. 542-548
Author(s):  
Yuan Liang Liu ◽  
Xiao Feng Xie
Keyword(s):  
Rock Mass ◽  
Slope Stability ◽  
3D Modeling ◽  
Rock Slope ◽  
Technical Problem ◽  
Rock Slope Stability ◽  
Rock Mass Structure ◽  
Stability Calculation ◽  
Geological Body ◽  
Geological Conditions

For the abandoned quarry complex rock slope project, the slope stability calculation is always the key technical problem, but due to the complex geological conditions and other factors, it makes the calculation of 3D modeling and the stability of the slope geological body and structure of the division, rock unit has always been the difficult problems in the field. This paper proposes a new method based on the rock mass structure combined with the degree of rock mass element, and then FLAC 3D, Midas GTS three-dimensional numerical calculation software are used, structure and surface topography in the slope, the slope surface fault, soft interlayer, complex geological 3D modeling, overcomes the problem of modeling of complex geological body, and the factors of rainfall, earthquake effect of the slope are consider for stability calculation, the calculation result is consistent with the reality, it has certain directive significance to the abandoned quarry re-greening slope stability analysis.

Rock Slope Stability Analysis Based on FLAC3D Numerical Simulation

2012 ◽  
Vol 170-173 ◽  
pp. 375-379
Author(s):  
Hao Wang ◽  
Zi Xiong Chen ◽  
Dong Ming Zhang
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Rock Slope ◽  
Static Stability ◽  
Slope Stability Analysis ◽  
Slope Instability ◽  
Rock Slope Stability ◽  
Economic Losses ◽  
Geological Conditions ◽  
Geological Factors

The rocky slope instability has brought great danger to human activity, and often causes economic losses, property damage and casualties, also can cause huge overhead expenses. Rock slope stability analysis must understand the geological conditions as the foundation, be under the analysis to effects of geological factors of rock slope stability, be under the premise of analysis to the engineering geological factors and then make evaluation, this is the best method of analysis and evaluation of stability of rock slope effective. This paper utilizes quick Lagrange difference analysis (FLAC3D) to Zhu Jiadeng landslide in Chongqing, the numerical simulations are to determine the landslide static stability, and provide the basis for management.

The Stability Analysis of Over-Dip Stratoid Structure Rock Slope

2012 ◽  
Vol 446-449 ◽  
pp. 1963-1966
Author(s):  
Shu Qiang Lu ◽  
Mo Xu
Keyword(s):  
Rock Mass ◽  
Slope Stability ◽  
Rock Slope ◽  
Simulation Analysis ◽  
Limit Equilibrium ◽  
Field Investigation ◽  
Left Bank ◽  
Diversion Tunnel ◽  
Rock Mass Structure ◽  
The Stability

The rock mass structure of granite is massive, so the stability of granite slope is good. Massive rock become stratoid structure when the rock mass contain discontinuities such as joints and faults. The deformation and destruction of the slope rock mass is controlled by the behaviour and orientation of the discontinuities. Especially, the over-dip discontinuities controlled the slope stability. In this paper, based on the abundant field investigation on the slope in left bank diversion tunnel inlets of Nuozadu power station in Lancang River, the types of rock mass structures and the combination between structural planes and slope surface are studied in detail so as to analyze the slope deformation mechanism. Finally, the slope stability is researched systematically by limit equilibrium method and FLAC numerical simulation analysis. A set of technical and methodological system on stability research of over-dip stratoid structure rock slope will hoped to be established.

scholarly journals Simulation analysis and experiment of sampling process of wheel brush sampler based on discrete element method

2021 ◽  
Vol 2137 (1) ◽  
pp. 012058
Author(s):  
Qiming Wei ◽  
Ran Liu ◽  
Hua Zhang ◽  
Xingyuan Wu ◽  
Haitao Luo
Keyword(s):  
Optimization Design ◽  
Simulation Analysis ◽  
Discrete Element ◽  
Test System ◽  
Simulation Software ◽  
Discrete Element Simulation ◽  
Structure Selection ◽  
Sampling Process ◽  
Element Simulation ◽  
Driving Torque

Abstract In order to study the brush sweep sampling process through simulation analysis, the structure of the asteroid sampler is simplified on the basis of retaining the wheel brush. Soybean particles are selected as the verification sampling particles, and the physical and contact parameters of calibrated soybean particles are applied to the discrete element simulation software EDEM and the relationship between the sampling wheel brush speed and torque is analysed. At the same time, a set of wheel brush asteroid sampler ground torque test system is built to verify the accuracy of the discrete element simulation results. The results show that the driving torque of the sampling wheel brush is mutational in the process of sampling, and the faster the rotation speed of the sampling wheel brush, the more the mass of the collected particles, and the greater the driving torque required for the sampling wheel brush. This research provides a method basis for the structure selection and parameter optimization design of the asteroid sampler.

Kinematics Simulation Analysis of Shots in Shot Blasting Machine Based on EDEM

2011 ◽  
Vol 121-126 ◽  
pp. 2071-2074
Author(s):  
Lin Hou ◽  
Li Ying Yang ◽  
Ying Zi Wang ◽  
Shou Ren Wang
Keyword(s):  
Discrete Element Method ◽  
Simulation Analysis ◽  
Element Model ◽  
Discrete Element ◽  
Discrete Element Model ◽  
Three Dimension ◽  
Shot Blasting ◽  
Kinematics Simulation ◽  
Motion Process ◽  
Flow Motion

A three-dimension discrete element model of the shot blasting machine has been established to study the principles of shots flow motion in shot blasting machine. The three-dimension discrete element method (EDEM) was used to analyse the shot-motion process inside the shot blasting machine. The dynamic law of shots motional process inside shot blasting machine was shown through simulation.

scholarly journals An integrated approach for jointed rock slope stability analysis using stochastic discrete fractures: A case study in mountains area

2019 ◽  
Vol 295 ◽  
pp. 03003
Author(s):  
Weizhong Chen ◽  
Luyu Wang ◽  
Xuyan Tan ◽  
Jiang Lei
Keyword(s):  
Slope Stability ◽  
Rock Slope ◽  
Integrated Approach ◽  
Jointed Rock ◽  
Rock Slope Stability ◽  
Hybrid Finite Element Method ◽  
Discrete Fractures ◽  
Geological Conditions ◽  
Jointed Rock Slope

Stochastic discrete fractures are ubiquitous in practicing engineering and contribute much to the stability for geological mediums. In contrast to the traditional treatments based on continuum mechanics, we propose an integrated approach using discrete fractures based on an improved hybrid finite element method (FEM). A typical jointed rock slop is selected as a case study and then was simulated in the light of geological conditions for the study site. The basic equations of fracture domains are derived to generate stochastic discrete fractures which render a fundamental to the model. To implement this procedure through computer program, discrete fractures generating algorithm was developed. In the aspect of discretization, we presented a meshing scheme and proposed an algorithm to create fracture elements. To evaluate rock slope stability in a quantitative way, safety factor is calculated by strength reduction method. Numerical simulations were carried out showing the mechanical behaviors of jointed rock slope under different boundary conditions.

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