Residual Slope Stability in Low Order Streams of Angangueo Mining Area (Michoacán, Mexico) After the 2010 Debris Flows

2017 ◽  
pp. 651-660 ◽  
Author(s):  
Stefano Morelli ◽  
Veronica Pazzi ◽  
Victor Hugo Garduño Monroy ◽  
Nicola Casagli
Keyword(s):  
Slope Stability ◽  
Debris Flows ◽  
Mining Area ◽  
Low Order

Slope Stability Analysis Based on Coupling Multiple Factors

2014 ◽  
Vol 548-549 ◽  
pp. 475-480
Author(s):  
Zhong Qiang Sun
Keyword(s):  
Slope Stability ◽  
Evaluation Model ◽  
Temporal Distribution ◽  
Monitoring Network ◽  
Mining Area ◽  
Continuous Variable ◽  
Geological Structure ◽  
Fuzzy Mathematics ◽  
Discrete Variable ◽  
Landslide Mass

Firstly, according to the physical makeup and the structure characteristics of landslide mass in one area, there are 6 kinds of typical hazard factors are put forward, such as mining under the ground, landslide characteristics, geological structure, and height of wave, grading angle, and rain intensity. Application of fuzzy mathematics theory, the fuzzy mathematics evaluation model on the slope stability of many factors is established. Evaluate criterion of continuous variable and discrete variable are determined based on the analysis of landslide characteristics and spatial-temporal distribution, then slope stability is evaluated, and the evaluation results are in accord with the practical situation. Finally, based on above evaluation results, Landslides Monitoring Network in mining area is established, and monitoring results proved that the landslides in the mining area are stability at present.

scholarly journals Two-Dimensional Modeling of the Influence of Underground Mining Direction on Slope Stability in Coordinated Open-Pit and Underground Mining

2021 ◽  
Author(s):  
Bowen Liu ◽  
Zhenwei Wang ◽  
Xinpin Ding ◽  
Zhitao Wang ◽  
Bin Li
Keyword(s):  
Rock Mass ◽  
Slope Stability ◽  
Underground Mining ◽  
Mining Area ◽  
Two Dimensions ◽  
Open Pit ◽  
Engineering Practice ◽  
Inverse Slope ◽  
Coal Wall ◽  
Mining Face

Abstract Under a background of coordinated open-pit and underground mining engineering practice in the Pingshuo mining area, a combination of numerical simulations and similar-model experiments was used to study the influence of the underground mining direction on slope deformation in two dimensions. The results show that the disturbance caused by inverse-slope mining is more obvious than that caused by along-slope mining. Underground mining presents an asymmetric influence on the open-pit slope; the slope rock mass on the open-off cut side is disturbed more than that on the coal-wall side. Compared with the slope in front of the advancing direction of the underground mining face, the degree of rock-mass damage and stress concentration of the slope of the open-off cut side are more serious. As such, in coordinated open-pit and underground mining practice, an along-slope mining direction is recommended to reduce adverse effects on slope stability and improve the recovery rate of coal resources.

scholarly journals Study on shaping slope stability of dump in eastern grassland open-pit mine

2020 ◽  
Vol 194 ◽  
pp. 04043
Author(s):  
Guo Xiaoli ◽  
Yan Jiancheng ◽  
Li Xueliang ◽  
Wen Xin ◽  
Li Xingli
Keyword(s):  
Slope Stability ◽  
Slope Angle ◽  
Mining Area ◽  
Open Pit Mine ◽  
Open Pit ◽  
Open Pit Mining ◽  
Dump Slope ◽  
The Stability ◽  
Step Type ◽  
Mine Dump

The dumps in the open-pit mining area in the eastern grassland are prone to landslides due to the fragile ecological environment, so it is inevitable to reshape the dump slopes. In order to explore a more scientific method for slope shaping of open-pit mine dump, slope stability analysis were used to compare effect of three types of slope-type (wave-shaped, slope-shaped and step-shaped slope shaping method)in outside dumping site of Baori Hiller open-pit mine. The results show that the slope stability is negatively correlated with the slope angle, and the stability of different shaping slopes is realized as wave-shaped slope (F=2.711)> Slope-shaped slope(F=2.513)>Step-shaped slope(F=1.047), in which the wave type and slope type are all within the safe range, but the step type slope is unstable; in consideration of cost, stability and erosion resistance, it is better to set the slope angle of the dump to 15°.The wave-shaped shaping method of the natural dumping of the excavation field outside the Baori Hiller open-pit mine has the best effect and is worth promoting.

Analysis of the Relative Position of the Slope and Underground Mining Area and its Influence Properties

2013 ◽  
Vol 634-638 ◽  
pp. 3277-3281 ◽  
Author(s):  
Shi Guo Sun ◽  
Hong Yang ◽  
Chun Sheng Li ◽  
Bao Lin Zhang ◽  
Jia Wang ◽  
...  
Keyword(s):  
Slope Stability ◽  
Underground Mining ◽  
Mining Area ◽  
Open Pit ◽  
Stability Factor ◽  
Mining Depth ◽  
Extracellular Region ◽  
Geological Conditions ◽  
Slope Rock ◽  
The Stability

The stability state of slope rock mass is relating to each other’s relative location during the transformation from open-pit to underground mining, it’s the most disadvantageous influence on the slope stability when the underground mining area is located in the toe of slope, and it’s the best influence as in the slope extracellular region. Slope stability factor changes with the geometric dimensions of underground mining increased, but not in direct proportion. Under the condition of constant geometric dimensions of mining area, the influence on slope stability is changing with the mining depth increased. Thus indicating that the influence on slope stability by underground mining has its spatial property, and to determine the specific influence value requires a combination of many factors, such as the relationship of relative spatial position, the geometric dimensions of mining area, engineering geological conditions and so on.

Slope stability analysis in an open mining area

2020 ◽  
pp. 779-786
Author(s):  
Anton Chirica ◽  
Rolland Mlenajek ◽  
Andrei Olteanu ◽  
Cristian Banciu
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Mining Area ◽  
Slope Stability Analysis

scholarly journals Wildfire Impacts on Slope Stability Triggering in Mountain Areas

Geosciences ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 417 ◽  
Author(s):  
Abbate ◽  
Longoni ◽  
Ivanov ◽  
Papini
Keyword(s):  
Slope Stability ◽  
Debris Flows ◽  
Degree Of Saturation ◽  
Critical Conditions ◽  
Vegetation Coverage ◽  
Large Variability ◽  
Stability Of Slopes ◽  
Wildfire Effects ◽  
The Stability

Landslides over steep slopes, floods along rivers plains and debris flows across valleys are hydrogeological phenomena typical for mountain regions. Such events are generally triggered by rainfall, which can have large variability in terms of both its intensity and volume. Furthermore, terrain predisposition and the presence of some disturbances, such as wildfires, can have an adverse effect on the potential risk. Modelling the complex interaction between these components is not a simple task and cannot always be carried out using instability thresholds that only take into account the characteristics of the rainfall events. In some particular cases, external factors can modify the existing delicate equilibrium on the basis of which stability thresholds are defined. In particular, events such as wildfires can cause the removal of vegetation coverage and the modification of the soil terrain properties. Therefore, wildfires can effectively reduce the infiltration capacity of the terrain and modify evapotranspiration. As a result, key factors for slope stability, such as the trend of the degree of saturation of the terrain, can be strongly modified. Thus, studying the role of wildfire effects on the terrain’s hydrological balance is fundamental to establish the critical conditions that can trigger potential slope failures (i.e., shallow landslides and possible subsequent debris flows). In this work, we investigate the consequences of wildfire on the stability of slopes through a hydrological model that takes into account the wildfire effects and compare the results to the current stability thresholds. Two case studies in the Ardenno (IT) and Ronco sopra Ascona (CH) municipalities were chosen for model testing. The aim of this paper is to propose a quantitative analysis of the two cases studies, taking into account the role of fire in the slope stability assessment. The results indicate how the post-fire circumstances strongly modify the ability of the terrain to absorb rainfall water. This effect results in a persistently drier terrain until a corner point is reached, after which the stability of the slope could be undermined by a rainfall event of negligible intensity.

Study of the Effect of Mining with Transition from Open-Pit to Underground and without Protective Coal Pillar on Slope Stability

2014 ◽  
Vol 1010-1012 ◽  
pp. 1475-1481
Author(s):  
Shi Guo Sun ◽  
Yanan Yi ◽  
Lu Jin ◽  
Jia Huan Shi
Keyword(s):  
Slope Stability ◽  
Slope Failure ◽  
Underground Mining ◽  
Coal Pillar ◽  
Simulation Method ◽  
Mining Area ◽  
Control Measures ◽  
Open Pit ◽  
Rock Body ◽  
Mining Scheme

As this mining area has a shallow coal seam and a dump, therefore, the mining for the deep resources uses the method of transition from open-pit to underground without protective coal column. In this paper, the numerical simulation method is used to analysis the surface subsidence and slope stability from the two different mining schemes which are from inside to outside, and from outside to inside, in order to obtain the optimization of mining scheme. And settlement and slope stability of rock body are further analyzed from two aspects of fully exploit from the tendency and from toward, the result of an overall slip slope failure caused by underground mining is found. So that in the process of exploitation, corresponding prevention and control measures to the slope safety has been put forward, ensuring smooth production.

Numerical Simulation of Slope Stability Analysis of Open Pit Coal Mine Based on MIDAS/GTS

2012 ◽  
Vol 256-259 ◽  
pp. 193-197
Author(s):  
Chong Xian Liu ◽  
Yong Tao Gao
Keyword(s):  
Slope Stability ◽  
Coal Mine ◽  
Mining Area ◽  
Slope Instability ◽  
Open Pit ◽  
Shanxi Province ◽  
North Slope ◽  
Mining District ◽  
The North

Based on mining area end slope stability evaluation engineer- ing of Pingshuo East open pit coal mine in Shanxi Province, ac- cording to the status quo of the North Slope of the first mining district of the East open pit coal mine as well as engineering g- eological investigation results, this article selected a represen- tative cross-section of the North Slope,adopted processing fu- nctions of finite element analysis software MIDAS/GTS, and re- spectively analyze slope stability under three conditions of the mining area of the initial excavation,backfilling and disposal,a- nd follow-up excavation.The paper concluded that Initial exca- vation caused slope instability; backfill slope is stable after di- sposal; follow-up excavation has essentially no effect on slope stability. The establishment and analysis are much closer to t- he real situation, objectively reflect the distribution of slope s- tability of the East open pit coal mine, and provide a design for open pit production safety.

Space Properties of Effects of Slope Stability by Underground Mining

2012 ◽  
Vol 472-475 ◽  
pp. 3171-3177 ◽  
Author(s):  
Shi Guo Sun ◽  
Pei Xin Dong
Keyword(s):  
Slope Stability ◽  
Relative Position ◽  
Safety Assessment ◽  
Underground Mining ◽  
Mining Area ◽  
Scientific Basis ◽  
Open Pit ◽  
Resource Extraction ◽  
And Function ◽  
Resources Exploitation

At present, technology for open pit combined underground mining is one problem about mine. It mainly involves some problems, such as how to design deep resources exploitation, how to evaluation slope stability and so on. Combining the underground mining effect with their characteristics and function attributes influenced by the slope deformation, this paper considers the both composite superimposed law, and derives the calculation method of the slope stability under comprehensive function. Accordingly, explore the influence law of slope stability, induced by underground mining area and the relative position and the space and geometry size changes of slope body. And the final purpose is to provide the scientific basis for design and safety assessment of deep resource extraction.

Sign in / Sign up

Export Citation Format

Share Document