Geomechanics and Engineering

  • 제2권2호
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  • Pages.125-140
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  • 2010
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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Stability analysis of a rock slope in Himalayas

  • 투고 : 2010.04.15
  • 심사 : 2010.05.20
  • 발행 : 2010.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

Slope stability analysis of the right abutment of a railway bridge proposed at about 350 m above the ground level, crossing a river and connecting two huge hillocks in the Himalayas, India is presented in this paper. The site is located in a highly active seismic zone. The rock slopes are intensely jointed and the joint spacing and orientation are varying at different locations. Static slope stability of the rock slope is studied using equivalent continuum approach through the most commonly used commercial numerical tools like FLAC and SLOPE/W of GEOSTUDIO. The factor of safety for the slope under static conditions was 1.88 and it was reduced by 46% with the application of earthquake loads in pseudo-static analysis. The results obtained from the slope stability analyses confirmed the global stability of the slope. However, it is very likely that there could be possibility of wedge failures at some of the pier locations. This paper also presents the results from kinematics of right abutment slope for the wedge failure analysis based on stereographic projections. Based on the kinematics, it is recommended to flatten the slope from 50o to 43o to avoid wedge failures at all pier locations.

키워드

참고문헌

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피인용 문헌

  1. Design of Rock Slope Reinforcement: An Himalayan Case Study vol.49, pp.6, 2016, https://doi.org/10.1007/s00603-016-0913-4
  2. Evaluation of seismic performance of buildings constructed on hillside slope of Dronka village – Egypt vol.9, pp.2, 2015, https://doi.org/10.1179/1939787914Y.0000000053
  3. Analytical solution of seismic stability against overturning for a rock slope with water-filled tension crack vol.11, pp.4, 2016, https://doi.org/10.12989/gae.2016.11.4.457
  4. Evaluation of Seismic Performance of Buildings Constructed on Hillside Slope of Doronka Village-Egypt vol.2014, 2014, https://doi.org/10.1155/2014/940923
  5. Numerical analysis of a complex slope instability: Pseudo-wedge failure vol.15, pp.1, 2010, https://doi.org/10.12989/gae.2018.15.1.669
  6. Effectiveness of reinforcing a low-height sandy slope with geosynthetic reinforcement for landscape development vol.12, pp.3, 2010, https://doi.org/10.1007/s12517-019-4269-4
  7. Three-Dimensional Simulation of Seismic Slope-Foundation-Structure Interaction for Buildings Near Shallow Slopes vol.20, pp.1, 2020, https://doi.org/10.1061/(asce)gm.1943-5622.0001529
  8. Methodology for Resloping of Rock Slope Using 3D Models from UAV-CRP Technology vol.147, pp.9, 2010, https://doi.org/10.1061/(asce)gt.1943-5606.0002591
  9. Seismic Response of RC Moment Frame Including Topography-Soil-Structure Interaction vol.26, pp.4, 2010, https://doi.org/10.1061/(asce)sc.1943-5576.0000625