Finite element analysis of failed slope by shear strength reduction technique: a case study for Surabhi Resort Landslide, Mussoorie township, Garhwal Himalaya

Gupta, Vikram; Bhasin, Rajinder; Kaynia, Amir M.; Kumar, Vipin; Saini, Anil; Tandon, Ruchika Sharma; Pabst, Thomas

doi:10.1080/19475705.2015.1102778

Cited by 69 publications

(27 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In stability analysis in the finite element method, the strength reduction method [26][27][28] can well obtain the safety factor, which is closely connected with previous evaluation methods. Krabbenhoft and Lyamin [28] gave an example about the strength reduction analysis by using finite-element limit analysis, and detect infeasibility based on the ability of interior-point methods.…”

mentioning

confidence: 78%

Stability and Support Analysis of Coverage Rock-Soil Aggregate of Longhuguan Landslide

Sun

Fu-hua

2017

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

Landslides have an effect on lives and properties in many different countries [1], making control of the effects of natural hazards -especially landslides -an urgent problem [2]. Landslide can cause secondary damage, rockslide-dammed lakes [3][4], tsunamis [5][6][7], and block roads [8]. There are so many factors leading to landslides, such as hydrology [9], earthquakes, top loads, pedology, different layers, geomorphy [10], and geology-changing climate [11].A slope consists of soil and rock. Previous research treated geomaterials as homogeneous materials and did not separate soils and rock. Different geomaterials have different affects on slope stability. Mahmood and Kim [12] analyzed the effect of soil type on matric suction and stability of unsaturated slope, using the modified MohrCoulomb failure criterion and the saturated-unsaturated seepage model, and drew upon the fact that saturatedunsaturated hydraulic conductivity and matric suction head affect the matric suction results. Tiwari and Ajmera Pol. J. Environ. Stud. Vol. 26, No. 6 (2017), 2747-2757 AbstractRock-soil aggregate landslides are distributed all over the world and have done great harm to transportation networks, buildings, personal safety, and city construction. Although landslide studies usually focus on the slope of the single homogeneous material, few slopes are composed of or covered by various complicated geomaterials. This paper proposes a calculation model of the slope covered by rock-soil aggregate and analyzes Longhuguan landslide in Guangxi, China, considering rainfall. Fully considering the weak surface, a support design plan is given.The unbonded cable is taken to support the landslide, the concrete beams are adopted on the angle turning point of the surface, and the slide-resistant piles are used to jointly support the front edge of the slope. Top fissures are blocked and landslide drainage measures are taken. The displacement monitoring proves that the support is effective. This study can provide many references for landslide support and analysis covered by rock-soil aggregate.

show abstract

mentioning

confidence: 78%

Stability and Support Analysis of Coverage Rock-Soil Aggregate of Longhuguan Landslide

Sun

Fu-hua

2017

Pol. J. Environ. Stud.

View full text Add to dashboard Cite

show abstract

“…Therefore, it could truly reflect the stress and strain of slope under the stressed state and the unit in the lower part of the plastic zone could produce certain vertical deformation and horizontal deformation, basically eliminating the plastic zone in the lower part of slope due to the boundary effect. The deformation of the slope and the development of the plastic zone were well simulated [30][31][32]. Material parameters used in the slope stability analysis and geotechnical parameters under different reduction factors are shown in Table 1 below.…”

Section: Calculation Parameters and Model Of Weak Rock Slope (1) Weakmentioning

confidence: 99%

Application of Polymer Curing Agent in Ecological Protection Engineering of Weak Rock Slopes

et al. 2019

View full text Add to dashboard Cite

Under the action of water, weak rock slopes easily expand and the strength and stiffness decrease, which results in slope instability. The styrene–acrylic emulsion cement-matrix composite, a new type of polymer curing agent, was developed for the curing and treatment of weak rock slopes. The strength-reduction factor method and ANSYS finite element software were used to calculate and analyze the stability of slopes before and after protection. The stability safety factor of weak rock after protection increased by 30% from 2.0 to 2.6. In order to evaluate the performance of the polymer curing agent, the mixture test was carried out in the laboratory. It was found that the waterproofness, hydrophobicity, and microstructure of weak rock slopes with the polymer curing agent can be significantly improved. Finally, the polymer curing agent was adopted and the external-soil spray-seeding technique was used in physical engineering. From test results, it was indicated that the polymer curing agent for weak slopes is beneficial in improving the water-damage resistance of a slope surface and prevent or reduce the softening of weak rock so that plants can grow for a long time. The treatment for weak rock slopes was successfully combined with plant protection, achieving the dual effect of weak rock slope protection and ecological protection.

show abstract

“…In terms of slope stability, the techniques can be categorized as discontinuum modeling and continuum modeling [63]. Discontinuum modeling is majorly used for rock slope stability analysis, whereas continuum modeling is used for debris flows as well as rock slopes dependent on the material and geometry of the slope [19,64].…”

Section: Lake Damming Landslidesmentioning

confidence: 99%

Rainfall Induced Landslide Studies in Indian Himalayan Region: A Critical Review

et al. 2020

View full text Add to dashboard Cite

Landslides are one of the most devastating and recurring natural disasters and have affected several mountainous regions across the globe. The Indian Himalayan region is no exception to landslide incidences affecting key economic sectors such as transportation and agriculture and often leading to loss of lives. As reflected in the global landslide dataset, most of the landslides in this region are rainfall triggered. The region is prone to 15% of the global rainfall-induced landslides, and thereby a review of the studies in the region is inevitable. The high exposure to landslide risk has made the Indian Himalayas receive growing attention by the landslides community. A review of landslides studies conducted in this region is therefore important to provide a general picture of the state-of-the-art, a reference point for researchers and practitioners working in this region for the first time, and a summary of the improvements most urgently needed to better address landslide hazard research and management. This article focuses on various studies ranging from forecasting and monitoring to hazard and susceptibility analysis. The various factors used to analyze landslide are also studied for various landslide zones in the region. The analysis reveals that there are several avenues where significant research work is needed such as the inclusion of climate change factors or the acquisition of basic data of highest quality to be used as input data for computational models. In addition, the review reveals that, despite the entire region being highly landslide prone, most of the studies have focused on few regions and large areas have been neglected. The aim of the review is to provide a reference for stakeholders and researchers who are currently or looking to work in the Indian Himalayas, to highlight the shortcomings and the points of strength of the research being conducted, and to provide a contribution in addressing the future developments most urgently needed to obtain a consistent advance in landslide risk reduction of the area.

show abstract

Finite element analysis of failed slope by shear strength reduction technique: a case study for Surabhi Resort Landslide, Mussoorie township, Garhwal Himalaya

Cited by 69 publications

References 15 publications

Stability and Support Analysis of Coverage Rock-Soil Aggregate of Longhuguan Landslide

Stability and Support Analysis of Coverage Rock-Soil Aggregate of Longhuguan Landslide

Application of Polymer Curing Agent in Ecological Protection Engineering of Weak Rock Slopes

Rainfall Induced Landslide Studies in Indian Himalayan Region: A Critical Review

Contact Info

Product

Resources

About