Stability Charts for the Collapse of Residual Soil in Karst

Drumm, Eric C.; Aktürk, Özgür; Akgün, Haluk; Tutluoğlu, Levent

doi:10.1061/(asce)gt.1943-5606.0000066

Cited by 35 publications

(19 citation statements)

References 20 publications

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“…The dimensionless chart developed by Drumm et al (2009) to evaluate the stability of a void in soil overlying karst bedrock is based on the results of finite element analyses. The analyses were conducted for a range of hypothetical soil properties and void geometries expressed in terms of the ratio of an assumed hemispherical void diameter (D) to soil overburden thickness above the void (h).…”

Section: Finite Element Modelmentioning

confidence: 99%

“…Multi-electrode electrical testing was performed in an effort to identify landfill areas that may be underlain (Drumm et al, 2009). Figure 3 (Drumm et al, 2009).…”

Section: Geologic and Subsurface Conditionsmentioning

confidence: 99%

“…A methodology for evaluating the static stability of discrete voids (i.e., caves) within shallow rock is presented by Siegel et al (2001). Drumm and Yang, (2005) and Drumm et al (2009) developed simplified charts for evaluating the static stability of a void within the soil overburden. However, there are aspects, such as the determination of representative void sizes and geometry, that present difficulties in characterizing the risk of…”

Section: Introductionmentioning

confidence: 99%

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Application of Stability Charts and Reliability Concepts for Simplified Analysis of a Void in Soil Overlying Karst Bedrock

Siegel¹,

Drake²,

Drumm³

2013

Full Proceedings of the Thirteenth Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of K

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37 void collapse. To overcome such difficulties, simplified stability charts may be combined with reliability concepts to characterize the risk of collapse of a void in the soil overlying the rock surface. Simplified Charts for Soil Stability Stability charts are widely used for the evaluation of soil slopes (Taylor, 1937; Bishop and Morgenstern, 1960) where the charts were developed in terms of the slope height and inclination, and the soil shear strength is expressed in terms of the soil cohesion intercept, c, and friction angle φ. These stability charts are typically presented in terms of a dimensionless stability number, N, which is often defined by Equation 1. (1) where N is a dimensionless stability number, γ is the unit weight of the soil, H is the height of the slope, and c is the cohesion component of the soil shear strength. Typically, the charts allow the potential for failure to be expressed in terms of a factor-of-safety (FS) or the ratio of the available soil strength to the strength required to maintain stability. (2) where the parameters c d and φ d are the corresponding values of the cohesion intercept and friction angle required to maintain equilibrium. Using some of the concepts originally applied to soil slopes, Drumm et al. (2009) prepared simplified charts for the evaluation of the stability of a void in the soil overlying the rock surface.

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Section: Finite Element Modelmentioning

confidence: 99%

“…Multi-electrode electrical testing was performed in an effort to identify landfill areas that may be underlain (Drumm et al, 2009). Figure 3 (Drumm et al, 2009).…”

Section: Geologic and Subsurface Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of Stability Charts and Reliability Concepts for Simplified Analysis of a Void in Soil Overlying Karst Bedrock

Siegel¹,

Drake²,

Drumm³

2013

Full Proceedings of the Thirteenth Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of K

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“…Failure eventually occurs if sufficient plastic flow causes imbalance of stresses. This complex stability mechanism has been the focus of recent research, which has investigated different factors affecting cavity stability, using either physical modeling (Goodings and Abdulla 2002;Abdulla and Goodings 1996) or numerical simulations (Helm et al 2013;Hatzor et al 2010;Bakun-Mazor et al 2009;Drumm et al 2009;Drumm and Yang 2005;Keqiang et al 2004;Augarde et al 2003;Keqiang et al 2003;Yang and Drumm 2002;Tharp 1999Tharp , 2002. Goodings and Abdulla (2002) and Abdulla and Goodings (1996) conducted experimental studies using centrifuge-testing to investigate the failure mechanism in cemented sand that bridges cavities located in karstic limestone bedrock.…”

Section: Introductionmentioning

confidence: 99%

“…Fractured rock can be effectively modeled by introducing reduction factors for the rock properties to replicate joint impact on rock strength and stiffness (Drumm et al 2009;Drumm and Yang 2005;Yang and Drumm 2002). Drumm et al (2009) studied the stability of predefined circular cavities in bedrock. They developed stability charts, using a dimensionless stability number (SN) and the geometry of a potential void in the residual soil.…”

Section: Introductionmentioning

confidence: 99%

Stability of Solution Cavities in Urban Developments: A Case Study Towards Enhancing Geohazard Risk Assessment

Ganainy¹,

Demirkan²,

Gutiérrez³

et al. 2015

Geotech Geol Eng

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Karst cavities in fissured soluble rock represent serious geotechnical hazard for civil construction and urban development. The process of cavity formation, expansion, and propagation is difficult to predict because it is driven by a combination of diverse causes, such as the dissolution rate of rock; flow of groundwater; amount of fine material within rock layers; presence of loose, uncontrolled fill over the rock; and the leakage of underground utilities. Several factors can affect cavity stability, including cavity geometry and dimensions, cavity depth, overburden surface-layer lithology, and surface-loading conditions. This paper presents a case study for karst cavities stability in the Abu Dhabi Municipality (ADM) of the United Arab Emirates as part of a comprehensive study initiated by the ADM to address the geotechnical, geologic, and hydrogeological hazards encountered in the municipality. The purpose of this study is to develop a methodology for assessing karst cavities stability in the ADM, and thereby, quantify their potential hazard for civil construction and urban development in the municipality. A numerical study is performed, using a finite difference model that is based on site-specific ground conditions encountered in a localized area. Results from this numerical investigation are presented in the form of stability charts for different lithologic and surfaceloading conditions. These charts are used to develop a set of geographic information system cavity-collapse geohazard maps for the study area to factor solution cavity-collapse risk into an integrated geohazard map for the ADM. Based on available information and the case study presented herein, it is concluded that the collapse of solution cavities do not significantly contribute to the geotechnical hazard observed in the ADM.

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Karren and Sinkholes

2022

Karst Hydrogeology, Geomorphology and Caves

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Stability Charts for the Collapse of Residual Soil in Karst

Cited by 35 publications

References 20 publications

Application of Stability Charts and Reliability Concepts for Simplified Analysis of a Void in Soil Overlying Karst Bedrock

Application of Stability Charts and Reliability Concepts for Simplified Analysis of a Void in Soil Overlying Karst Bedrock

Stability of Solution Cavities in Urban Developments: A Case Study Towards Enhancing Geohazard Risk Assessment

Karren and Sinkholes

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