Stability analysis of the sliding process of the west slope in Buzhaoba Open-Pit Mine

Fang, Ning; Chang-sheng, JI; Crusoe, Garmondyu E.

doi:10.1016/j.ijmst.2016.05.033

Cited by 7 publications

(6 citation statements)

References 3 publications

(5 reference statements)

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“…The calculation procedure involves several steps: an initial assumption of the safety factor, subsequent calculation of the thrust starting from the first slide at the top of the slope and progressing towards the last slide, and finally determining the safety factor value at which the thrust reached zero. This zero-thrust condition represents the equilibrium state, thus yielding the final safety factor value [25][26][27][28].…”

Section: Slope Stability Analysis Methods Considering Pore Air Pressurementioning

confidence: 99%

Numerical Investigation of Rainfall Infiltration-Induced Slope Stability Considering Water-Air Two-Phase Flow

Tian,

Peiffer,

Malengier

et al. 2024

Current Perspectives on Applied Geomorphology

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For insights into rainfall infiltration on soil slopes and coupled transmission mechanisms, two-phase flow and finite element analysis were employed to examine water and air movement during the Shuping landslide. The results indicated a division of the landslide surface into two zones: an upper inflow area and a lower overflow area, driven by contrasting inflow and outflow directions. The total water and air flux remained stable, minimally affected by external factors such as rainfall attributes, surface runoff, and air temperature variations. In the inflow area of the slope surface, when rainfall intensity was greater than the total rate of the infiltration of water and air, the magnitude of infiltration equalled to the total rate infiltration of water and air, and runoff generation occurred in this area. Conversely, when infiltration matched rainfall intensity, runoff was absent in this area. In addition, water pressure in the saturated area of the slope surface can be transferred to the groundwater of the slope by pore air pressure, which could also increase the pressure head of the groundwater, and this was also detrimental to slope stability. Regarding uniform rainfall, it significantly reduces the safety factor, potentially making it the most hazardous pattern for slope failure.

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Section: Slope Stability Analysis Methods Considering Pore Air Pressurementioning

confidence: 99%

Numerical Investigation of Rainfall Infiltration-Induced Slope Stability Considering Water-Air Two-Phase Flow

Tian,

Peiffer,

Malengier

et al. 2024

Current Perspectives on Applied Geomorphology

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show abstract

“…Fang et al [18] studied an unstable slope in the Buzhaoba open-pit mine, China. This slope was at critical stability mainly due to mining operations and rheological processes accelerated by weathering.…”

Section: Calculationsmentioning

confidence: 99%

The Setting of Strength Parameters in Stability Analysis of Open-Pit Slope Using the Random Set Method in the Bełchatów Lignite Mine, Central Poland

et al. 2021

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The slopes of open-pit mines are often at risk of failure. To identify this hazard, stability analyses are performed. An important element of these stability analyses is the reliable selection of input parameter values for the calculations. This selection is difficult because the slopes of the open pit are disturbed by mining activities. In such conditions, rheological processes, intensified by weathering, develop in open-pit slopes. This study is aimed at setting the strength parameters for the stability analysis of open-pit slopes with a developed slide process, using the random set method. The study was performed on the example of the open pit of the Bełchatów lignite mine, central Poland. A four-stage methodology, according to the random set method, was proposed. The methodology covered the following: site investigation, sensitivity analyses, shear strength reduction (SSR) analyses using numerical calculations, and probability analyses of the factor of safety (FoS) calculation results. The setting of the input parameters took into account the peak and residual strength parameters for each lithological unit in the physical model of the open-pit slope. Samples for laboratory tests were taken from the cores of nine test boreholes. The sensitivity analysis included all peak and residual strength parameters for each lithological unit in the body. As a result of the sensitivity analysis, specific strength parameters were adopted that would have a great impact upon the results of the calculations. Selected sets of parameter values were then used for the FoS calculations. The resultant FoS values revealed the probable slide planes. The positions of the slide planes were consistent with the interpreted slide surfaces based on the control boreholes and terrain observations. Knowledge of the slide planes positions and the values of the strength parameters enabled the designing of a securing approach for this landslide, and the taking of preventive measures to reduce this risk.

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“…Chen et al analyzed the distribution law of end slope cracks by mathematical statistics method, and put forward reasonable end slope monitoring means and landslide prevention measures based on slope displacement data [20] . Ning et al obtained the variation curve of stability coefficient in the process of landslide and put forward the control measures of slope landslide by using residual thrust method [21] . Based on the theoretical model of slope time-dependent stability analysis, slope structure and stress development law, Han et al think that the rheological properties of soft rock directly affect the overall stability of soft rock slope or slope controlled by soft rock structural plane.…”

Section: Introductionmentioning

confidence: 99%

Research on Collaborative Optimization of End Side Mining under the “Dual Carbon” Goal—A Case Study of the Baorixile Open-pit Mine

LIU,

ZHANG,

BAI

et al. 2023

Preprint

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Under the “dual carbon” goal, various open-pit mines actively participate in the country's call, and use new technologies and methods to extract as much coal as possible After the coal is mined by the traditional method, so as to achieve the goal of efficient utilization of energy resources. The east end slope of Baorixile open-pit mine has reached the critical value of slope stability due to the previous longitudinal mining to the boundary, but the lower part of the end slope coal seam is still covered with coal seams. Therefore, the method of transverse mining and the inner discharge pressure side tracking is adopted for coal mining. In this paper, by clarifying the end slope landslide mechanism, the combination of AutoCAD and Rhino is used to establish a model, and the influence of the width of the end slope plate and the tracking distance of the inner discharge pressure side on the stability of the slope is analyzed by using FLAC3D, the width of the end slope plate and the tracking distance of the inner discharge pressure side have been determined with safety as the premise and production capacity as the goal. The research results show that the greater the width of the end slope plate, the better the slope stability; The greater the tracking distance of the inner discharge pressure side, but the smaller the production capacity. Therefore, considering factors such as safety and production capacity, it is determined that the width of the end slope plate is 40m, the tracking distance of the inner discharge pressure side is 200m, and the recoverable coal mining amount is 7.1403 million tons, stripping amount is 3.7962 million m3, making it the safest and the largest production capacity.

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Stability analysis of the sliding process of the west slope in Buzhaoba Open-Pit Mine

Cited by 7 publications

References 3 publications

Numerical Investigation of Rainfall Infiltration-Induced Slope Stability Considering Water-Air Two-Phase Flow

Numerical Investigation of Rainfall Infiltration-Induced Slope Stability Considering Water-Air Two-Phase Flow

The Setting of Strength Parameters in Stability Analysis of Open-Pit Slope Using the Random Set Method in the Bełchatów Lignite Mine, Central Poland

Research on Collaborative Optimization of End Side Mining under the “Dual Carbon” Goal—A Case Study of the Baorixile Open-pit Mine

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