Numerical Evaluation of Slope Stability measures: A Case Study of Birham Landslide, Murree, Pakistan.

1st International Conference on Advances in Engineering and Technology

Sadiq, Shamsher^1 ; Khan, Urwah^2 ; Alam, Mehtab^3 ; Mandokhail, Saeedullah Jan^4 ; Maqsood-Ur-Rehman^5 ; Ahmed, Nizamani Zubair^1 ; Ikram, Ayaz^6

Department of Civil and Environment Engineering, Hanyang University, Seoul, Korea, Republic of^1

Nagoya University, Japan^2

Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China^3

Department of Civil Engineering, BUITEMS, Quetta, Pakistan^4

National Engineering Services of Pakistan (NESPAK), Pakistan^5

Mott Macdonald Pakistan (Pvt) Ltd. (MPP), Pakistan^6

关键词: Dynamic slope stability;    Evaluation of slope stabilities;    Limit equilibrium methods;    Murree;    numerical evaluation;    Pakistan;    Peak ground acceleration;    Static and dynamic loading;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/414/1/012028/pdf
DOI  :  10.1088/1757-899X/414/1/012028

来源: IOP

【 摘 要 】

Slope failures endanger the public safety and one of major hazard considered in mountainous terrain. In this paper, slope stability measures have been evaluated using the limit equilibrium method (LEM). A case study of slope failure from Birham land slide, Murree, Pakistan has been modelled using SLOPE/W program. In-situ boring tests are performed to collect laboratory test specimens. Geotechnical properties (i.e. shear strength and stiffness parameters) for the idealised slope sections are based onlaboratory tests performed on the collected in-situ specimens. Slope stability measures are evaluated in terms of factor of safety (FoS) for static and dynamic loading. Pseudo-static method is used for dynamic analysis, considering the Peak ground acceleration (PGA) from seismic hazard map of Pakistan. Results shows that static and dynamic FoS of original slope are inadequate therefore resistance to slip surface of original unstable slope is provided by slope geometry modification with pile reinforcement. Based on these remedial measures, computed FoS of modified slope are found to be sufficient for static and dynamic slope stability.