Analysis of failure pattern in cut slopes of bedded sandstone: a case study

Singh, Digvijay; Singh, Prakash Kumar; Kainthola, Ashutosh; Pandey, H. K.; Kumar, Saurabh; Singh, T. N.

doi:10.1007/s12665-022-10528-0

Cited by 11 publications

(4 citation statements)

References 68 publications

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“…However, the description and interpretation of the result from an individual joint set are not included in the context of this study. The susceptibility to failure is represented in the range of 0 to 100, categorized into five classes: very low (0-20), low (21)(22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40), moderate (41)(42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53)(54)(55)(56)(57)(58)(59)(60), high (61)(62)(63)(64)(65)(66)(67)(68)(69)…”

Section: Resultsmentioning

confidence: 99%

“…Kinematic analysis is commonly performed by the 'Markland's test' to determine the possibility of planar, wedge, and topple failure modes in rock slopes [10]. It is traditionally performed by interpreting projections of joints and slope orientations on a stereonet [23][24][25][26][27][28][29]. The feasibility of a particular type of failure (i.e., planar, wedge, or topple) at a particular morphological setup is determined by the orientation of discontinuity planes, their interaction with each other, and the slope face of the topography.…”

Section: State-of-the-artmentioning

confidence: 99%

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A GIS-Based Kinematic Analysis for Jointed Rock Slope Stability: An Application to Himalayan Slopes

Kundu

Sarkar

Ghaderpour

et al. 2023

Land

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GIS-based kinematic stability analysis in rock slopes is a rare practice in geological engineering despite its immense potential to delineate unstable zones in a mountainous region. In this article, we have used a GIS-based modified technique to assess the efficiency of kinematic analysis in predicting shallow landslides in the rock slopes of the Himalayan mountains on a regional scale. The limited use of this technique is primarily due to the complexities involved in its practical application. To make this technique more effective and convenient usability, we present modified methods and a new application, ‘GISMR’, that works with the aid of GIS software for the determination of kinematic susceptibility. A modified kinematic analysis method was implemented to define the stability in terms of failure susceptibility on a scale of 0 to 100 rather than a conservative result, such as failure or non-failure. We also present another functionality of the GISMR that provides optimised slope angles over a region. This functionality could aid the decision-making process when selecting a suitable location for a road path or other engineering constructions that are impacted by unstable mountain slopes. The applicability of this new method was demonstrated in a rock failure-prone region in the mountains of the Indian Himalayas. The outcomes delineate the unstable slopes in the region, which are intersected by a strategic National Highway 05 and have a long history of landslide-related hazards. It was found that 9.61% of the area is susceptible to failure. However, 2.28% is classified as a low susceptible region, and 2.58% of the area is very-low susceptible. The regions with moderately high, high, and very-high susceptibility cover 2.78%, 1.49%, and 0.46% of the whole area, respectively. The results were evaluated by receiver operating characteristic curve and a frequency ratio method to represent the association between kinematic susceptibility and the mass movement inventory in the area. It is concluded that kinematic susceptibility has a strong relationship with landslide activity in the rock slopes of the Himalayan region.

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Section: Resultsmentioning

confidence: 99%

Section: State-of-the-artmentioning

confidence: 99%

A GIS-Based Kinematic Analysis for Jointed Rock Slope Stability: An Application to Himalayan Slopes

Kundu

Sarkar

Ghaderpour

et al. 2023

Land

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“…The effects of structural anisotropy on the time-independent mechanical parameters of anisotropic rocks, including the compression strength and elastic modulus, have been extensively studied. A series of uniaxial and triaxial compression tests were conducted on shale, slate, schist, and phyllite to investigate the strength anisotropy of rocks (Niandou et al, 1997;Nasseri et al, 2003;Saroglou and Tsiambaos, 2008;Saeidi et al, 2013;Ali et al, 2014;Singh et al, 2015;Singh et al, 2022). All the results showed that structural anisotropy caused the rock strength to vary with the dip angle of the bedding plane α.…”

Section: Introductionmentioning

confidence: 99%

Effect of structural anisotropy on compressive creep behavior of composite rock based on digital image correlation

Tian

Shu

Chen

et al. 2022

Preprint

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In this study, a series of uniaxial creep tests were conducted on three-dimensional printed (3DP) composite rock specimens to investigate the effects of structural anisotropy on the time-dependent behavior of the rock. Digital image correlation (DIC) was used to monitor the evolution of the full-field strain during creep tests. The Burgers model was used to analyze the anisotropic creep behavior of the composite rock. When the specimen was subjected to a low creep stress (σcr ≤ 0.55σc (failure stress of the specimen)), the creep strain was mainly induced by transient creep, and the transient creep parameter Ek exhibited increasing order-shaped anisotropy. When the specimen was subjected to a high creep stress (σcr ≥ 0.70 σc), the creep strain of the specimen was dependent on steady creep, and the steady creep parameter ηm showed U-shaped anisotropy similar to the compression strength anisotropy of the specimen. DIC observations showed that the strain concentration along the soft layer was an important factor that resulted in anisotropic creep, and the time-dependent shearing slip between the soft layer and hard material enhanced the creep anisotropy under a high creep stress. The failure modes of the specimens showed that creep failure developed first in the soft layer, and the creep process had an insignificant influence on the failure modes of the composite rock.

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“…It is commonly believed that rock mass is heterogeneous and discontinuous, containing fissures, joints, faults, cleavage planes, and bedding planes and these structural planes dominate the mechanical behaviors of rock mass [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Different loading directions concerning structural planes orientations always make rock mass anisotropic and more problematic during engineering construction [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

The Confinement-Affected Strength Variety of Anisotropic Rock Mass

Guo

Zheng

et al. 2022

Materials

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It has been recognized that the anisotropic structures dominate the deformation and strength properties of laminated rock masses. The resultant strength anisotropy is strongly affected by confining pressures beyond anisotropic structures. Nevertheless, the effects of confinement are inconsistent among existing experiments and not fully understood. This study focuses on the effects of confining pressure on strength anisotropy through theoretical derivation together with experimental results analysis. The variations in the possibility of anisotropic structural plane dominant failure and strength anisotropy degree under different confining pressures are discussed. The different types of anisotropic structural planes, i.e., the fresh contact discontinuity or soft, thick layer, are found as the key factor resulting in different confinement effects. The strength anisotropy weakens gradually and vanishes eventually as confining stress increases for the anisotropic rock mass with the structural plane of fresh contact discontinuity. On the other hand, the strength does not vanish at very high confining stress and the anisotropic strength difference even rises as confining stress increases for the anisotropic rock mass with the anisotropic structural plane of the soft layer. This study improves the understanding of anisotropic rock mass mechanical behavior, especially at high confining stress, and may promote the development of excavation and supporting techniques for underground projects.

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Analysis of failure pattern in cut slopes of bedded sandstone: a case study

Cited by 11 publications

References 68 publications

A GIS-Based Kinematic Analysis for Jointed Rock Slope Stability: An Application to Himalayan Slopes

A GIS-Based Kinematic Analysis for Jointed Rock Slope Stability: An Application to Himalayan Slopes

Effect of structural anisotropy on compressive creep behavior of composite rock based on digital image correlation

The Confinement-Affected Strength Variety of Anisotropic Rock Mass

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