Analysis Tools for Mass Movement Assessment

Utili, Stefano; Crosta, Giovanni B.

doi:10.1016/b978-0-12-396452-6.00013-6

Cited by 6 publications

(7 citation statements)

References 54 publications

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“…The LE method has undergone many developments and computational technology development. This method has been developed for a long time and the ordinary method of slices (OMS) was the first LE method initially developed by Fellenius (Utili and Crosta, 2015). However, it is rarely applied nowadays because the calculation of the safety factor requires a lot of simplification, so this method is less accurate.…”

Section: Methodsmentioning

confidence: 99%

“…Generally, the calculation results of the safety factor show a low value from the design aspect, it becomes less economical. This method by Bishop (Utili and Crosta, 2015) was refined by including the normal interslice force so that the accuracy of the safety factor calculation was increased, which was called the Simplified Bishop's Method (Zhu, 2008;Ji et al, 2020). This method considers normal interslice forces but ignores interslice shear forces (Abramson et al, 2002).…”

Section: Methodsmentioning

confidence: 99%

“…This method considers normal interslice forces but ignores interslice shear forces (Abramson et al, 2002). In 1967, Spencer improved this method by including force and moment equilibrium (Utili and Crosta, 2015). Spencer's method is not only able to predict circular failure but also non-circular failure (Agam et al, 2016).…”

Section: Methodsmentioning

confidence: 99%

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Geotechnical study for analyzing slope stability between two mining pit boundary

Zulfahmi¹

2022

IMJ

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This paper is a new concept to increase the safety and mining conservation on PT-X and PT-Y with no boundary gap between the two areas. To optimize coal recovery as a basis of supporting conservation, the two companies needed to adjust coal production in terms of avoiding technical problems at the mining time process due to the rock structure and coal seam at the border were the same. PT-X plans to produce 2 million tons of coal, but the government only approved 1 million tons, while PT-Y still approved 2 million tons. This paper discusses the instability of mining in border locations due to the differences of coal production. The applied methodology is conducting geotechnical modeling by considering statistical aspects of data distribution and the probability of failure. Based on the results of geotechnical modeling by numerical methods on the basis of 2D and 3D for the difference in the production level of 1 million tons in all cross-sections, the FK value is 0.992 - 1.248 with a probability of failure (PI) of 5.40 - 48.00%. Results of modeling analysis show that both single and overall slopes are at a critical level and are not safe. If this difference is narrowed by increasing PT-X's coal production by 1.5 million tons, the border location's mining conditions will stabilize. Therefore, it is necessary to propose to the government for PT-X's coal production to be added by at least 500.000 tons so that the production process of each company runs safely.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Geotechnical study for analyzing slope stability between two mining pit boundary

Zulfahmi¹

2022

IMJ

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“…In limit equilibrium methods, the equilibrium of a soil mass tending to slide down under gravity's influence is calculated Wright 2005, Utili andCrosta 2015). All these methods are based on the comparison of forces, moments, or stresses resisting the mass's movement with those that cause unstable motion (disturbing forces).…”

Section: Methodsmentioning

confidence: 99%

The Evolution of Geotech - 25 Years of Innovation

Hammah¹,

Yacoub²,

McQuillan³

et al. 2021

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I have been teaching and researching rock engineering and practicing as a consultant since 1972. I have spent most of that time in underground mining. I have seen significant changes, both evolutionary and radical, in the sector. In this paper, I reflect on some of these changes in mining geomechanical practice. I will also comment on some of the positive and occasionally less positive impacts of these changes. One constant throughout my career is that geomechanical designs will always be fraught with uncertainty. As a result, we will discuss geomechanical design as being, in its essence, a risk management exercise. I will argue that, as impressive as modern numerical analysis techniques are, they do not on their own mitigate design risk; under worst-case scenarios, they make things worse. Empirical and simple models must be used as a check. The paper intends to provoke healthy skepticism in geomechanics practitioners, designers and managers regarding all the aspects of the geomechanical analysis and design process. A failure to recognize the risks in these processes can have catastrophic effects.

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“…The susceptibility of an area to landslides can be assessed using various methods such as mapping morphology [5] using remote sensing techniques [6,7] or computing using different computer codes [8,9]. The present paper uses a statistical approach.…”

Section: Introductionmentioning

confidence: 99%

Types of Landslides along Lake Balaton, Hungary

Nagy-Göde

Török

2022

Period. Polytech. Civil Eng.

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Landslides are often triggered by various mechanisms such as precipitation, increase in the groundwater table, surface load, etc. and are classified according to the geometry and intensity of the motion. This paper provides an inventory considering all these factors by interpreting landslide records and available maps of the lakeside banks of the largest lake in Central Europe, Lake Balaton. Landslides in these areas severely damaged roads and railway networks. These disasters are linked to the mass movements of hundreds of m3 in the past years. The study area, the coastal regions of the lake, is divided into three geographically and geologically different sections (Eastern Basin, North Coast, South Coast). The landslide forms and the proportion of various movements and their timing also differ in these areas: at the south coast, falls and toppling prevail, while in the eastern basin, slidings prevail. The leading cause of mass movements is soaking and human interventions in all areas. Continuous monitoring of these landslide-prone areas contributes to the prediction of sliding and help in the design of remediation actions.

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Analysis Tools for Mass Movement Assessment

Cited by 6 publications

References 54 publications

Geotechnical study for analyzing slope stability between two mining pit boundary

Geotechnical study for analyzing slope stability between two mining pit boundary

The Evolution of Geotech - 25 Years of Innovation

Types of Landslides along Lake Balaton, Hungary

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