Evaluation of potential surface instability using finite element method in Kharsali Village, Yamuna Valley, Northwest Himalaya

Jamir, Imlirenla; Gupta, Vikram; Kumar, Vipin; Thong, Glenn T.

doi:10.1007/s11629-017-4410-3

Cited by 30 publications

(10 citation statements)

References 25 publications

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“…All of the elements were found to be of good quality, on the basis of several trial-and-error tests. e number of bad elements was zero [27][28][29].…”

Section: Computer Program For Numericalmentioning

confidence: 99%

Stability and Countermeasures for a Deposit Slope with Artificial Scarp: Numerical Analysis and Field Monitoring

Hong

Shao

Guang-bin

et al. 2020

Advances in Civil Engineering

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This paper presents the results of the stability analysis of a deposit slope with an artificial scarp in a tunnel exit and an evaluation of the effectiveness of four proposed reinforcement schemes. A typical slope section was used to study the deposit slope stability and retaining mechanisms of the reinforcement systems. A series of two-dimensional (2D) finite element models (FEM), combined with a strength reduction technique, was established using the Phase2 software. According to field monitoring results, the horizontal displacements of the front, middle, and rear of the slope decreased gradually, and the safety factor increased successively. The front of the deposit slope was in a state of limit equilibrium as a result of the artificial scarp formed by long-term manual excavation. Anchors and concrete frame beams provided stress compensation and improve the stability of the deposit slope, and front prestressed anchor cables and stability piles strengthened the mechanical properties of the rock and soil masses and provided resistance at the front of the deposit. Rear stability piles prevented the front of the deposit from being pushed and the middle and rear of the deposit from being pulled and provided resistance at the front of the deposit. The field monitoring also showed that the deformation of the deposit slope was effectively controlled. The study results provide insights into the effectiveness of measures for reinforcing and maintaining the stability of deposit slope with artificial scarps.

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“…All of the elements were found to be of good quality, on the basis of several trial-and-error tests. e number of bad elements was zero [27][28][29].…”

Section: Computer Program For Numericalmentioning

confidence: 99%

Stability and Countermeasures for a Deposit Slope with Artificial Scarp: Numerical Analysis and Field Monitoring

Hong

Shao

Guang-bin

et al. 2020

Advances in Civil Engineering

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“…To understand the pre-failure pattern, finite element method (FEM)-based slope stability evaluation has been among the most widely used approaches for complex slope geometry (Griffiths and Lane, 1999;Jing, 2003;Jamir et al, 2017;Kumar et al, 2018). However, the selection of input parameters in FEM analysis and the set of assumptions used (material model, failure criteria, and convergence) may also result in uncertainty in the final output (Wong, 1984;Cho, 2007;Li et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…The NW Himalaya has been one of most landslideaffected terrains owing to the active tectonics and multiple precipitation sources, i.e. the Indian summer monsoon (ISM) and western disturbance (Dimri et al, 2015;Jamir et al, 2019). The NW Himalaya accommodated ∼ 51 % of all the landslides in India during the years 1800-2011 (Parkash, 2011).…”

Section: Introductionmentioning

confidence: 99%

Inferring potential landslide damming using slope stability, geomorphic constraints, and run-out analysis: a case study from the NW Himalaya

et al. 2021

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Abstract. Prediction of potential landslide damming has been a difficult process owing to the uncertainties related to landslide volume, resultant dam volume, entrainment, valley configuration, river discharge, material composition, friction, and turbulence associated with material. In this study, instability patterns of landslides, geomorphic indices, post-failure run-out predictions, and spatio-temporal patterns of rainfall and earthquakes are explored to predict the potential landslide damming sites. The Satluj valley, NW Himalaya, is chosen as a case study area. The study area has witnessed landslide damming in the past and incurred losses of USD ∼30 million and 350 lives in the last 4 decades due to such processes. A total of 44 active landslides that cover a total ∼4.81±0.05×106 m2 area and ∼34.1±9.2×106 m3 volume are evaluated to identify those landslides that may result in potential landslide damming. Out of these 44, a total of 5 landslides covering a total volume of ∼26.3±6.7×106 m3 are noted to form the potential landslide dams. Spatio-temporal variations in the pattern of rainfall in recent years enhanced the possibility of landslide triggering and hence of potential damming. These five landslides also revealed 24.8±2.7 to 39.8±4.0 m high debris flows in the run-out predictions.

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“…To understand the pre-failure pattern, slope stability evaluation through numerical modeling has been a common practice. The Finite Element Method (FEM) has been a most widely used numerical model for the complex slope geometry (Griffiths and Lane 1999;Jing 2003;Kanungo et al 2013;Jamir et al 2017;Kumar et al 2018). However, selection of input parameters in the FEM analysis and set of assumptions (material model, failure criteria, convergence etc.)…”

Section: Introductionmentioning

confidence: 99%

Inferring potential landslide damming using slope stability, geomorphic constraints and run-out analysis; case study from the NW Himalaya

Kumar¹,

Jamir²,

Gupta³

et al. 2020

Preprint

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Abstract. Prediction of potential landslide damming has been a difficult process owing to uncertainties related to landslide volume, resultant dam volume, entrainment, valley configuration, river discharge, material composition, friction, and turbulence associated with the material. In this study instability pattern of landslides, parametric uncertainty, geomorphic indices, post-failure run-out predictions, and spatio-temporal pattern of rainfall and earthquake is explored using Satluj valley, North-West (NW) Himalaya as a case study area to predict the potential landslide damming sites. The study area witnessed landslide damming in the past and incurred $ ~ 30 M loss and 350 lives in the last four decades due to such processes. Forty-four active landslides in the study area that cover a total ~ 4.81 ± 0.05 × 106 m2 area and ~ 34.1 ± 9.2 × 106 m3 volume are evaluated in the study to identify those that may result in potential landslide damming. Out of forty-four, five landslides covering the volume of ~ 26.3 ± 6.7 × 106 m3 are observed to form potential landslide dams. Spatio-temporal varying patterns of rainfall in recent years enhance the possibility of landslide triggering and hence potential damming. These landslides also resulted in 24.8 ± 2.7 m to 39.8 ± 4.0 m high material flow in run-out predictions.

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Evaluation of potential surface instability using finite element method in Kharsali Village, Yamuna Valley, Northwest Himalaya

Cited by 30 publications

References 25 publications

Stability and Countermeasures for a Deposit Slope with Artificial Scarp: Numerical Analysis and Field Monitoring

Stability and Countermeasures for a Deposit Slope with Artificial Scarp: Numerical Analysis and Field Monitoring

Inferring potential landslide damming using slope stability, geomorphic constraints, and run-out analysis: a case study from the NW Himalaya

Inferring potential landslide damming using slope stability, geomorphic constraints and run-out analysis; case study from the NW Himalaya

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