Stability analysis of high and steep slope considering excavation unloading effect

2010 ◽  
pp. 933-939
Author(s):  
Lehua Wang ◽  
Jianlin Li ◽  
Huafeng Deng ◽  
Mei Han ◽  
Qiufeng Huang
Keyword(s):  
Stability Analysis ◽  
Steep Slope ◽  
Unloading Effect ◽  
High And Steep Slope

Stability Analysis on High and Steep Slope of Open-Pit Based on Limit Equilibrium Method

2015 ◽  
Vol 777 ◽  
pp. 106-111 ◽  
Author(s):  
Zhen Hua Xie ◽  
Ran Yi Xie ◽  
Xiao Yue Lu
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Limit Equilibrium ◽  
Limit Equilibrium Method ◽  
Slope Stability Analysis ◽  
Steep Slope ◽  
Open Pit ◽  
Safety Coefficient ◽  
The Stability ◽  
High And Steep Slope

The stability of slope in open-pit affects the economic benefits and safety production of mining enterprises. From the two aspects of internal factors and external factors, this paper analyses the factors affecting the slope stability of open-pit, discusses the basic theory of slope stability analysis, and puts forward the criterion of slope stability based on the safety coefficient. The limit equilibrium method is chosen to analyze the stability of the high and steep slope of open-pit in this paper, and the SLIDE software is used for numerical simulation according to the actual slope model of certain open-pit. The simulation results show that the slope safety coefficient of the instance is 1.01, which is unstable slope. When the number of the slope blocks is more than 40, the safety coefficient tend to be stable. Blasting vibration has a great influence on slope stability. The results of slope stability analysis provide a scientific guidance for the prevention and control of the slope instability.

scholarly journals Disaster control and effect evaluation of high and steep slope based on the landslide mass chain disaster model

2021 ◽  
Vol 861 (6) ◽  
pp. 062040
Author(s):  
Lianku Xie ◽  
Hui Cao ◽  
Tianhong Yang ◽  
Zhixiu Wang ◽  
Ziqing Yuan ◽  
...  
Keyword(s):  
Steep Slope ◽  
Effect Evaluation ◽  
Landslide Mass ◽  
Mass Chain ◽  
Disaster Control ◽  
High And Steep Slope

scholarly journals Study of Passive Protective Net Protecting the Rockfall Caused by Open-Pit Blasting on High and Steep Slope

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Zhiyu Zhang ◽  
Qingyun Qian ◽  
Jianguo Wang ◽  
Haoshan Liu ◽  
Ke Liang ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Impact Force ◽  
Impact Resistance ◽  
Steep Slope ◽  
Interaction Time ◽  
Open Pit ◽  
Buffer Time ◽  
The Impact ◽  
Impulse Force ◽  
High And Steep Slope

In order to prevent rockfall caused by open-pit blasting on the high and steep slope and ensure that the passive protective net structure has sufficient impact resistance, the mechanism of blasting flyrock causing rockfall is analyzed by using ANSYS/AUTODYN to establish the model of rockfall and passive protective net; at the same time, the influences of protective net size, rockfall kinetic energy, and rockfall size to the protective effect were also studied. The results show that under the condition of the same rockfall kinetic energy and rockfall size, the larger the size of the protective net, the longer the buffer time, and the impact force that net can sustain is greater; by assuming the protective net size and rockfall size to be a constant, the greater the rockfall kinetic energy, the less the interaction time between rock and net, and the greater the impulse force that net can suffer; similarly, by keeping the protective net size and the kinetic energy of rockfall to be a constant, it is found that the larger the size of the rockfall, the larger the interaction area and longer interaction time with the net, and the less net will be disrupted; the protective net used in the mine can intercept the rockfall caused by flyrock in blasting process effectively and ensure the safety of villager at the foot of the mountain.

scholarly journals A Deformation Forecasting Model of High and Steep Slope Based on Fuzzy Time Series and Entire Distribution Optimization

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 176112-176121
Author(s):  
Yanhua Fu ◽  
Lushan Wan ◽  
Xiaorui Fu ◽  
Dong Xiao ◽  
Yachun Mao ◽  
...  
Keyword(s):  
Time Series ◽  
Steep Slope ◽  
Fuzzy Time Series ◽  
Forecasting Model ◽  
High And Steep Slope ◽  
Entire Distribution

scholarly journals Reinforcement Mechanism and Optimisation of Reinforcement Approach of a High and Steep Slope Using Prestressed Anchor Cables

2019 ◽  
Vol 10 (1) ◽  
pp. 266
Author(s):  
Jian Li ◽  
Shanxiong Chen ◽  
Fei Yu ◽  
Lingfa Jiang
Keyword(s):  
Calculation Model ◽  
Steep Slope ◽  
Reinforcement Effect ◽  
Reinforcement Mechanism ◽  
Anchor Cable ◽  
Design Requirements ◽  
Prestressed Anchor ◽  
Upper Third ◽  
High And Steep Slope ◽  
Different Parts

Using prestressed anchor cables is one of the most common approaches for reinforcing slopes. By establishing a calculation model for a high and steep slope, the changes of displacement of slope foot and increment of force on the cables under different prestresses were calculated. Furthermore, the influence of prestress on the changes of displacement of slope foot and force on the cables was analysed. By analysing the changes in force on cables in different parts of the slope, the reinforcement mechanism of a prestressed anchor cable on the slope was attained. The result showed that the reinforcement effect of prestressed anchor cable on the slope was mainly attributed to it effectively restricting the displacement of sliding mass in the slope, while the effect of cables in the lower part of the slope was more significant than that of those in the upper part of the slope. Therefore, to reduce the number of cables, decrease the construction difficulty of cables and save money, it is feasible to remove cables in the range of the upper-third of the slope. Afterwards, by improving the cable prestress in the range of the lower-third and reducing the cable prestress in the middle, the safety factor of the slope can satisfy design requirements, thus reinforcing the slope.

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