Numerical Simulation Analysis of Layered Slope Landslide Mechanism in Open Pit Mine

2018 ◽  
pp. 364-374
Author(s):  
Zhigang Tao ◽  
Wenshuai Han ◽  
Mengnan Li ◽  
Xiaohui Zheng
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Open Pit Mine ◽  
Open Pit ◽  
Landslide Mechanism ◽  
Layered Slope

scholarly journals Numerical Simulation Analysis of NPR Anchorage Monitoring of Bedding Rock Landslide in Open-Pit Mine

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Kai Zhang ◽  
Xiaojie Yang ◽  
Xuebin Cui ◽  
Yong Wang ◽  
Zhigang Tao
Keyword(s):  
Numerical Simulation ◽  
Early Warning ◽  
Simulation Analysis ◽  
Failure Process ◽  
Open Pit Mine ◽  
Open Pit ◽  
Stress Monitoring ◽  
Anchor Cable ◽  
Whole Process ◽  
Rock Landslide

Nanfen open-pit iron mine is the largest single open-pit mine in Asia. Because of the lag of the extension project, the section has slowly spread in the shape of “V,” and disasters such as landslides occur frequently. In this study, first, the NPR anchor cable monitoring, which shows supernormal mechanical characteristics and can realize the monitoring and early warning target for the whole landslide process and early warning curve of bedding rock “2016-1101 landslide” in the lower wall of Nanfen open-pit mine, was analyzed, revealing the failure process of the bedding rock landslide and the force evolution characteristics of the NPR anchor cable. Then, based on the Fish language in FLAC3D and 3DEC software, the mechanical model of the NPR anchor cable was constructed, and numerical simulation was performed on the whole process of “16-1101 landslide” induced by accumulation of old landslide body. The results of this study indicate that the stress monitoring curves and failure characteristics of the NPR anchor cables in the whole process of landslide by the two numerical simulation methods are basically consistent with the field measurement results, providing a theoretical and practical basis for the mechanistic analysis and numerical simulation of other similar slopes.

Numerical Simulation Analysis on the Collapse of Slope in Iron Mine

2014 ◽  
Vol 926-930 ◽  
pp. 593-596
Author(s):  
Fang Wang ◽  
Chong Shi ◽  
Kai Hua Chen ◽  
De Jie Li ◽  
Ke Han
Keyword(s):  
Numerical Simulation ◽  
Shear Failure ◽  
Safety Management ◽  
Simulation Analysis ◽  
Underground Mining ◽  
Tensile Failure ◽  
Open Pit ◽  
Open Pit Mining ◽  
Roof Fall ◽  
Rock Movement

The process of open-pit mining can lead to high slopes in iron mines, and natural slopes should be rebuilt by the method of roof fall as the exploitation style turns from open-pit mining to the underground mining. So the slope can be steep, deep and may has the characteristics of collapse. It is difficult to describe the stabilization of the mining slope by a conventional safety factor method. Through the numerical simulation of underground mining process, this paper analyzes the result of distortion stress and rock movement rupture range. Studies have shown that the failure mode is dominated by tensile failure as a pattern of collapse and few is dominated by shear failure. The failure zone is controlled by rock mass parameters and structures. The results can be helpful for the proposition of exploitation program and safety management design.

Zonal extraction technology and numerical simulation analysis in open pit coal mine

2012 ◽  
Vol 22 (4) ◽  
pp. 487-491 ◽  
Author(s):  
Yanlong Chen ◽  
Qingxiang Cai ◽  
Tao Shang ◽  
Hongge Peng ◽  
Wei Zhou ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Coal Mine ◽  
Simulation Analysis ◽  
Open Pit ◽  
Extraction Technology

scholarly journals Experimental Study on the Calibration of Microparameters of Dolomite in the Barun Open-Pit Mine on the Basis of the Parallel Bond Model

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Zhiheng Dang ◽  
Zuoming Yin ◽  
Desheng Wang ◽  
Mingyu Fu ◽  
Qi Yin
Keyword(s):  
Mechanical Properties ◽  
Numerical Simulation ◽  
Uniaxial Compression ◽  
Open Pit Mine ◽  
Particle Flow ◽  
Open Pit ◽  
Test Results ◽  
Compression Tests ◽  
Simulation Test ◽  
Bond Model

The microparameter calibration of the particle flow parallel bond model (PBM) is mostly based on a uniaxial compression test. The microparameters calibrated only by uniaxial compression tests cannot be directly used to study the mechanical properties of rocks with surrounding pressure conditions. To analyze the relationship between the macroparameters and microparameters in the model and select appropriate particle flow model parameters, this study conducted a particle flow numerical simulation experiment based on the basic test principles of the uniaxial compression, Brazilian splitting, and triaxial compression tests. An orthogonal experimental design was performed for the calibration of the microparameters of the particle flow PBM, and multifactor analysis of variance was used to screen out the factors that have a considerable influence on the experimental indicators. Regression analysis was performed on the significant influencing factors and test indicators, and the corresponding linear and nonlinear relationships between the macroparameters and microparameters were obtained. Lastly, the microparameters of the model were determined in accordance with the macroparameters of the mechanical test of the Barun open-pit mine dolomite, and a numerical simulation test was conducted. Simulation test results were consistent with the actual test results, thus providing a basis for a subsequent numerical simulation study on the mechanical properties of dolomite.

Groundwater Numerical Simulation in an Open Pit Mine in a Limestone Formation Using MODFLOW

2015 ◽  
Vol 35 (2) ◽  
pp. 145-155 ◽  
Author(s):  
José Paulino Fernández-Álvarez ◽  
Lorena Álvarez-Álvarez ◽  
Ramón Díaz-Noriega
Keyword(s):  
Numerical Simulation ◽  
Open Pit Mine ◽  
Open Pit

Three-dimensional Nonhydrostatic Numerical Simulation for the PBL of Open-pit Mine

2000 ◽  
Vol 94 (2) ◽  
pp. 197-224 ◽  
Author(s):  
Yong Shi ◽  
X. S. Feng ◽  
F. S. Wei ◽  
Weimei Jiang
Keyword(s):  
Numerical Simulation ◽  
Three Dimensional ◽  
Open Pit Mine ◽  
Open Pit

Non-Working Wall's Slope Stability Analysis with the First Mining Area in Weijiamao Open-Pit Mine

2012 ◽  
Vol 446-449 ◽  
pp. 1853-1857
Author(s):  
Chen Peng ◽  
Peng Fei Chen ◽  
Zheng Yi Ti
Keyword(s):  
Numerical Simulation ◽  
Slope Stability ◽  
Slip Surface ◽  
Limit Equilibrium ◽  
Open Pit Mine ◽  
Open Pit ◽  
Geological Condition ◽  
Engineering Geological Condition ◽  
Prevention Measures ◽  
Cutting Slope

To ensure the non-working wall's slope stability in Weijiamao open-pit mine,the paper analysis the engineering geological condition and hydrogeology condition of Weijiamao open-pit mine's slope,on this basis,combine the typical rocky slope's deformation and failure mode,physical properties of glutenite and weak layer from experiment,determined the latent destruction mode of non-working wall's slope in Weijiamao open-pit mine;calculated the slope's stable coefficient and the stable coefficient after cutting slope and unloading with rigid body limit equilibrium method ;make the numerical simulation of slope stability with FLAC3D,these expound the evolution law of slope rock mass stress field,reveal landslide mechanism of non-working wall,determined the landslide model is along the circular slip surface;basis for the numerical simulation result,puts forward prevention measures by cutting slope and unloading to realize stable slope.All these provide guidance for slope stability in Weijiamao open-pit mine,provide reference for open-pit mine's slope stability.

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