A chart-based seismic stability analysis method for rock slopes using Hoek-Brown failure criterion

2016 ◽  
Vol 209 ◽  
pp. 196-208 ◽  
Author(s):  
Xing-yuan Jiang ◽  
Peng Cui ◽  
Chuan-zheng Liu
2021 ◽  
Vol 134 ◽  
pp. 104113
Author(s):  
Lin’gang Gao ◽  
Tongchun Li ◽  
Xiaoqing Liu ◽  
Huijun Qi ◽  
Shujie Fan ◽  
...  

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Bo-yi Hu ◽  
Xin-min Wang ◽  
Shuai Li ◽  
Jian-wen Zhao ◽  
Nyandwe Musonda Eugénie

To extract the 6.3 million tons of high-quality phosphate resources, a stability analysis and confidence level evaluation of backfill mining under high and steep rock slopes (HSRS) were conducted using the Slide software and a Monte Carlo simulation. The geological model of HSRS was constructed based on a geotechnical investigation. A series of laboratory tests were conducted to obtain the engineering parameters of the rock mass, and the mechanism of action of the backfill mining method was analyzed. After the stability analysis, the average safety factors of HSRS for normal operation are 1.575 (backfill method) and 1.509 (open-stope method), and for seismic conditions, they are 1.470 (backfill method) and 1.380 (open-stope method). According to the confidence level evaluation, the average failure probability of HSRS by using the backfill mining method is 0.0143. The results showed that using the backfill mining method under HSRS had better seismic stability and lower potential levels of destruction than using the traditional open-stope mining method. In addition, the backfill mining method can prevent the development of a circular failure surface, reduce the destructive effect of mining to a minimum, and maintain the lower failure probability of HSRS.


2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Yang Changwei ◽  
Zhang Shixian ◽  
Zhang Jianjing ◽  
Bi Junwei

The first-order differential equation of the seismic active earth pressure is established by horizontal slices analysis method, based on the elastic wave theory, with the summarized dynamic analysis model of the reinforced retaining wall and the plane of fracture assumed as linear type. And then this paper proposes a time-frequency analysis method for the internal antiseismic stability analysis on the retaining wall. The reasonability of this method is verified by the results from other methods, for example, rule. The internal frictional angle of filling earth, the seismic intensity, and the frequency of the input earthquake wave have a predominant effect on the needed total tensile force of the lacing wires, which shows that (1) the needed total tensile force of the lacing wires goes up with the increase of the PGA and the internal frictional angle; (2) the needed total tensile force of the expandability lacing wires is bigger than that of the nonexpandability lacing wires; (3) the needed total tensile force of lacing wires is saddle distributed and the force achieves maximum value when the frequency of input wave equals the natural frequency of reinforced retaining wall. Besides, if the reinforced retaining wall is designed in compliance with the rules, the emergency capacity of reinforced retaining wall is reduced. At last, this paper not only takes into account the effect of three factors of the seismic wave (PGA, frequency, and duration) on the internal antiseismic stability analysis of reinforced retaining wall but also provides some valuable references for the time-frequency seismic design of other retaining structures.


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