Detection of cavity migration and sinkhole risk using radar interferometric time series

Chang, Ling; Hanssen, Ramon F.

doi:10.1016/j.rse.2014.03.002

Cited by 76 publications

(82 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Despite the fact that final stages of sinkhole formation in soft rocks is usually characterized by a rapid brittle type of global failure (Lollino and Andriani 2017), recent interferometric synthetic aperture radar (inSAR) measurements show that ground movements start to accumulate with time several months before the collapse (Chang and Hanssen 2014;Intrieri et al 2015;Jones and Blom 2014;Nof et al 2013). In the Marsala Panatletico 2011 sinkhole, signs of instability, such as open fractures and detachment blocks, were observed already 1 year prior to collapse (Fazio et al 2017).…”

Section: A Time-evolving Building Damage Index Bdi(t)mentioning

confidence: 99%

A 3D Numerical Approach to Assess the Temporal Evolution of Settlement Damage to Buildings on Cavities Subject to Weathering

2018

View full text Add to dashboard Cite

The goal of this paper is to show how a recently developed advanced chemo-hydro-mechanical (CHM)-coupled constitutive and numerical model for soft rocks can be applied to predict the temporal evolution of settlement damage to buildings on cavities subject to weathering. In particular, a Building Damage Index (BDI) and its evolution with time is proposed. The definition of the BDI is inspired by the work of Boscardin and Cording (J Geotech Eng 115:1-21, 1989) and uses the surface differential settlements obtained by finite element (FE) analyses to assess how far a building is from a non-acceptable service condition. By modelling the reactive transport of chemical species in 3D and using a coupled CHM constitutive and numerical model, it is possible to simulate weathering scenarios and monitor the temporal evolution of surface settlements making the BDI time dependent. This approach is applied to evaluate the damage evolution of two buildings lying on two anthropic caves in a calcarenite deposit belonging to the Calcarenite di Gravina Formation. Standard and advanced experimental tests are performed on the in situ material, and the results are used to calibrate the constitutive model. The soundness of both constitutive relationship and reactive transport solver is subsequently tested by simulating two laboratory-scale boundary value experiments. The first is a model footing test on dry and wet calcarenite, while the second is a small-scale pillar that, after the saturation-induced short-term water weakening, fails due to a long-term dissolution weathering process. Finally, both 2D and 3D coupled FE analyses simulating different weathering scenarios and corresponding settlements affecting the buildings above the considered cavities are presented. Particular attention is placed on assessing the BDI and its temporal evolution. Keywords

show abstract

Section: A Time-evolving Building Damage Index Bdi(t)mentioning

confidence: 99%

A 3D Numerical Approach to Assess the Temporal Evolution of Settlement Damage to Buildings on Cavities Subject to Weathering

2018

View full text Add to dashboard Cite

show abstract

“…The differences may arise due to different measurement inaccuracies, as well as the presence of local variations as shown in Ketelaar and Hanssen (2003) and Ketelaar (2008). Sometimes, even two different parts of the same building may deform differently (Adam et al 2009;Chang and Hanssen 2014;Gernhardt et al 2010;Reale et al 2011;Zhu and Bamler 2010a, b;Zhu and Shahzad 2014). In order to perform a rigorous datum connection between InSAR and GNSS, it is important to know the location of the effective scattering phase centre of the PS reference, and ensure that there is no relative displacement between this phase centre and the GNSS antenna.…”

Section: Introductionmentioning

confidence: 99%

InSAR datum connection using GNSS-augmented radar transponders

Mahapatra

Marel

Leijen

et al. 2017

J Geod

View full text Add to dashboard Cite

“…Moreover, to really improve the reliability of this approach, a monitoring system capable of detecting detailed information on rock mass behavior may be used. For instance, remote sensing techniques [61] could be powerful tools for evaluating surface displacements in the area surrounding abandoned mines [62,63].…”

Section: Discussionmentioning

confidence: 99%

The risk of collapse in abandoned mine sites: the issue of data uncertainty

et al. 2016

View full text Add to dashboard Cite

Abstract:Ground collapses over abandoned underground mines constitute a new environmental risk in the world. The high risk associated with subsurface voids, together with lack of knowledge of the geometric and geomechanical features of mining areas, makes abandoned underground mines one of the current challenges for countries with a long mining history. In this study, a stability analysis of Montevecchia marl mine is performed in order to validate a general approach that takes into account the poor local information and the variability of the input data. The collapse risk was evaluated through a numerical approach that, starting with some simplifying assumptions, is able to provide an overview of the collapse probability. The nal results is an easy-accessible-transparent summary graph that shows the collapse probability. This approach may be useful for public administrators called upon to manage this environmental risk. The approach tries to simplify this complex problem in order to achieve a roughly risk assessment, but, since it relies on just a small amount of information, any nal user should be aware that a comprehensive and detailed risk scenario can be generated only through more exhaustive investigations.

show abstract

Detection of cavity migration and sinkhole risk using radar interferometric time series

Cited by 76 publications

References 22 publications

A 3D Numerical Approach to Assess the Temporal Evolution of Settlement Damage to Buildings on Cavities Subject to Weathering

A 3D Numerical Approach to Assess the Temporal Evolution of Settlement Damage to Buildings on Cavities Subject to Weathering

InSAR datum connection using GNSS-augmented radar transponders

The risk of collapse in abandoned mine sites: the issue of data uncertainty

Contact Info

Product

Resources

About