A three-dimensional back-analysis of the collapse of an underground cavity in soft rocks

Marco Vattano, Cipriano Di Maggio, Giuliana Madonia, Lollino, Fazio, Perrotti, Mario Parise

Risultato della ricerca: Article

14 Citazioni (Scopus)

Abstract

The assessment of stability of man-made underground caves, excavated in the past and later on abandoned,represents a serious challenge for land and urban planning operations, especially for the areas of possible interactionof the caves with overlying structures and infrastructures. Several areas of Southern Italy are characterizedby the presence of abandoned underground quarries for the extraction of soft calcarenite rocks, whichnow threatens the overlying environment due to the risk of collapse and the consequent generation of sinkholes.This work presents a back-analysis of a sinkhole occurred in 2011 in the town of Marsala, caused by the collapseof an underground quarry, as a representative case study of these phenomena. Based on the available geometricaland geological dataset as well as the field observations of the phenomenon, in this article the assumptionsand the results about the genesis of the 2011 sinkhole, as derived from a three-dimensional finite element backanalysisaimed at reconstructing the stress-strain evolution that brought to the ground failure collapse, is discussed.In particular, the 3-D numerical analyses have been performed in order to identify the factors responsibleof the genetic mechanism of the sinkhole. The finite element analysis has been carried out by accounting for thegeotechnical characterization of the Marsala calcarenites derived from both specific laboratory tests performedon samples taken from the site and literature data available on the same rock material; the numerical resultshave been then validated by means of the comparison with field observations and also compared with thoseachieved through a 2-D model of the same case study.
Lingua originaleEnglish
pagine (da-a)301-311
Numero di pagine11
RivistaEngineering Geology
Volume228
Stato di pubblicazionePublished - 2017

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Caves
Quarries
back analysis
soft rock
sinkhole
cavity
Rocks
Urban planning
cave
calcarenite
Finite element method
urban planning
rock
infrastructure
underground quarry

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Geology

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A three-dimensional back-analysis of the collapse of an underground cavity in soft rocks. / Vattano, Marco; Di Maggio, Cipriano; Madonia, Giuliana; Lollino; Fazio; Perrotti; Parise, Mario.

In: Engineering Geology, Vol. 228, 2017, pag. 301-311.

Risultato della ricerca: Article

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title = "A three-dimensional back-analysis of the collapse of an underground cavity in soft rocks",
abstract = "The assessment of stability of man-made underground caves, excavated in the past and later on abandoned,represents a serious challenge for land and urban planning operations, especially for the areas of possible interactionof the caves with overlying structures and infrastructures. Several areas of Southern Italy are characterizedby the presence of abandoned underground quarries for the extraction of soft calcarenite rocks, whichnow threatens the overlying environment due to the risk of collapse and the consequent generation of sinkholes.This work presents a back-analysis of a sinkhole occurred in 2011 in the town of Marsala, caused by the collapseof an underground quarry, as a representative case study of these phenomena. Based on the available geometricaland geological dataset as well as the field observations of the phenomenon, in this article the assumptionsand the results about the genesis of the 2011 sinkhole, as derived from a three-dimensional finite element backanalysisaimed at reconstructing the stress-strain evolution that brought to the ground failure collapse, is discussed.In particular, the 3-D numerical analyses have been performed in order to identify the factors responsibleof the genetic mechanism of the sinkhole. The finite element analysis has been carried out by accounting for thegeotechnical characterization of the Marsala calcarenites derived from both specific laboratory tests performedon samples taken from the site and literature data available on the same rock material; the numerical resultshave been then validated by means of the comparison with field observations and also compared with thoseachieved through a 2-D model of the same case study.",
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T1 - A three-dimensional back-analysis of the collapse of an underground cavity in soft rocks

AU - Vattano, Marco

AU - Di Maggio, Cipriano

AU - Madonia, Giuliana

AU - Lollino, null

AU - Fazio, null

AU - Perrotti, null

AU - Parise, Mario

PY - 2017

Y1 - 2017

N2 - The assessment of stability of man-made underground caves, excavated in the past and later on abandoned,represents a serious challenge for land and urban planning operations, especially for the areas of possible interactionof the caves with overlying structures and infrastructures. Several areas of Southern Italy are characterizedby the presence of abandoned underground quarries for the extraction of soft calcarenite rocks, whichnow threatens the overlying environment due to the risk of collapse and the consequent generation of sinkholes.This work presents a back-analysis of a sinkhole occurred in 2011 in the town of Marsala, caused by the collapseof an underground quarry, as a representative case study of these phenomena. Based on the available geometricaland geological dataset as well as the field observations of the phenomenon, in this article the assumptionsand the results about the genesis of the 2011 sinkhole, as derived from a three-dimensional finite element backanalysisaimed at reconstructing the stress-strain evolution that brought to the ground failure collapse, is discussed.In particular, the 3-D numerical analyses have been performed in order to identify the factors responsibleof the genetic mechanism of the sinkhole. The finite element analysis has been carried out by accounting for thegeotechnical characterization of the Marsala calcarenites derived from both specific laboratory tests performedon samples taken from the site and literature data available on the same rock material; the numerical resultshave been then validated by means of the comparison with field observations and also compared with thoseachieved through a 2-D model of the same case study.

AB - The assessment of stability of man-made underground caves, excavated in the past and later on abandoned,represents a serious challenge for land and urban planning operations, especially for the areas of possible interactionof the caves with overlying structures and infrastructures. Several areas of Southern Italy are characterizedby the presence of abandoned underground quarries for the extraction of soft calcarenite rocks, whichnow threatens the overlying environment due to the risk of collapse and the consequent generation of sinkholes.This work presents a back-analysis of a sinkhole occurred in 2011 in the town of Marsala, caused by the collapseof an underground quarry, as a representative case study of these phenomena. Based on the available geometricaland geological dataset as well as the field observations of the phenomenon, in this article the assumptionsand the results about the genesis of the 2011 sinkhole, as derived from a three-dimensional finite element backanalysisaimed at reconstructing the stress-strain evolution that brought to the ground failure collapse, is discussed.In particular, the 3-D numerical analyses have been performed in order to identify the factors responsibleof the genetic mechanism of the sinkhole. The finite element analysis has been carried out by accounting for thegeotechnical characterization of the Marsala calcarenites derived from both specific laboratory tests performedon samples taken from the site and literature data available on the same rock material; the numerical resultshave been then validated by means of the comparison with field observations and also compared with thoseachieved through a 2-D model of the same case study.

UR - http://hdl.handle.net/10447/240726

M3 - Article

VL - 228

SP - 301

EP - 311

JO - Engineering Geology

JF - Engineering Geology

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