Finite Element–Based Stability Charts for Underground Cavities in Soft Calcarenites

Perrotti, Michele; Lollino, Piernicola; Fazio, Nunzio Luciano; Pisano, Luca; Vessia, Giovanna; Parise, Mario; Fiore, Antonello; Luisi, Michele

doi:10.1061/(asce)gm.1943-5622.0001175

Cited by 24 publications

(12 citation statements)

References 29 publications

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“…In this paper, six case studies of underground artificial cavities, including three affected by sinkhole failures in the past and three in stable conditions at present, have been presented, aimed at application of the stability charts proposed by Perrotti et al (2018). The proposed stability charts have been verified to represent a valid method to assess the stability of underground cavities in soft carbonate rocks.…”

Section: Discussion and Concluding Remarksmentioning

confidence: 99%

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FEM-based stability charts for underground cavities in soft carbonate rocks: validation through case-study applications

Perrotti

Lollino

Fazio

et al. 2019

Preprint

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Abstract. The stability of man-made underground cavities in soft rocks interacting with overlying structures and infrastructures represents a challenging problem to be faced. Based upon the results of a large number of parametric two-dimensional (2D) finite-element analyses of ideal cases of underground cavities, accounting for the variability of cave geometrical features and rock mechanical properties, specific charts have been recently proposed in the literature to assess at a preliminary stage the stability of the cavities. The purpose of the present paper is to validate the efficacy of the stability charts by means of the application to several case studies of underground cavities, either subjected to collapse in the past or still stable. The stability charts proposed result to be performing to catch the stability conditions and, eventually, the conditions that lead to failure occurrence. For sinkholes already occurred, they show the importance of structural elements as pillars and internal walls in the stability of the whole quarry system, whereas, for cavities that have not reached failure, they can provide useful indications about the eventual proneness of the underground cavity to local or general instability phenomena.

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Section: Discussion and Concluding Remarksmentioning

confidence: 99%

“…The curves identify a stable area, above the threshold curves, and an unstable area underlying the same curves. Perrotti et al 2018). Perrotti et al 2018).…”

mentioning

confidence: 99%

FEM-based stability charts for underground cavities in soft carbonate rocks: validation through case-study applications

Perrotti

Lollino

Fazio

et al. 2019

Preprint

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“…In order to verify the stability conditions using the charts proposed by Perrotti et al (2018), an initial value of the cavity width of about 10-12 m, corresponding to the largest distance between two adjacent pillars (see Fig. 6), has been assumed, bearing in mind that the failure of the nearby pillars has presumably implied an increase in the effective L parameter.…”

Section: Barletta Sinkholementioning

confidence: 99%

“…Therefore, when a medium to high level of hazard results from the application of the charts here proposed, more detailed and site-specific investigations must be applied. Based upon the results of a large number of parametric two-dimensional (2-D) finite-element analyses of ideal cases of underground cavities that considered variability of geometrical features and mechanical properties found for a large number of underground cavities excavated in soft carbonate rocks, Perrotti et al (2018) have proposed specific charts to assess at a preliminary stage the cave stability and to evaluate a safety margin with respect to the occurrence of failure.…”

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confidence: 99%

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Stability charts based on the finite element method for underground cavities in soft carbonate rocks: validation through case-study applications

Perrotti

Lollino

Fazio

et al. 2019

Nat. Hazards Earth Syst. Sci.

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Abstract. The stability of man-made underground cavities in soft rocks interacting with overlying structures and infrastructures represents a challenging problem to be faced. Based upon the results of a large number of parametric two-dimensional (2-D) finite-element analyses of ideal cases of underground cavities, accounting for the variability both cave geometrical features and rock mechanical properties, specific charts have been recently proposed in the literature to assess at a preliminary stage the stability of the cavities. The purpose of the present paper is to validate the efficacy of the stability charts through the application to several case studies of underground cavities, considering both quarries collapsed in the past and quarries still stable. The stability graphs proposed by Perrotti et al. (2018) can be useful to evaluate, in a preliminary way, a safety margin for cavities that have not reached failure and to detect indications of predisposition to local or general instability phenomena. Alternatively, for sinkholes that already occurred, the graphs may be useful in identifying the conditions that led to the collapse, highlighting the importance of some structural elements (as pillars and internal walls) on the overall stability of the quarry system.

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Reliability-Based Evaluation of the Stability of Underground Cavities in Naples

Silva

Ramondini

Flora

2023

Springer Series in Geomechanics and Geoengineering

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Finite Element–Based Stability Charts for Underground Cavities in Soft Calcarenites

Cited by 24 publications

References 29 publications

FEM-based stability charts for underground cavities in soft carbonate rocks: validation through case-study applications

FEM-based stability charts for underground cavities in soft carbonate rocks: validation through case-study applications

Stability charts based on the finite element method for underground cavities in soft carbonate rocks: validation through case-study applications

Reliability-Based Evaluation of the Stability of Underground Cavities in Naples

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