Geoengineering Evaluation of Cut Slopes Along a Landslide-Prone Road Section in the Himalayas

The road networks in highly rugged landscape of the Himalayas exhibit numerous sets of discontinuities within the rock mass and are prone to landslides at different scales. These roads serve as essential transportation corridors to pilgrims and tourist destinations and play a vital role in developin...

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Bibliographic Details
Published in:Journal of the Institution of Engineers (India). Series A, Civil, architectural, environmental and agricultural Engineering Civil, architectural, environmental and agricultural Engineering, 2022-09, Vol.103 (3), p.905-919
Main Authors: Siddique, Tariq, Mondal, M. E. A., Akbar, Mohd Siddique, Khan, Wamiq Mohammed, Shawez, Mohd
Format: Article
Language:English
Subjects:
Case Study
Civil Engineering
Discontinuity
Engineering
Excavation
Geoengineering
Landslides
Roads
Roads & highways
Rock mass rating
Slope stability
Stability analysis
Transportation corridors
Transportation networks
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Summary:The road networks in highly rugged landscape of the Himalayas exhibit numerous sets of discontinuities within the rock mass and are prone to landslides at different scales. These roads serve as essential transportation corridors to pilgrims and tourist destinations and play a vital role in developing socioeconomic activities. In the present study, stability assessment of road cut slopes along national highway-107 (NH-107) from Rudraprayag to Gaurikund is undertaken. Vulnerable engineered rock slopes are characterized by various rock mass classification schemes, including Slope Mass Rating (SMR), Q-Slope, and Slope Stability Rating (SSR). Accordingly, safe and effective geotechnical designing of engineered slopes are envisaged. The results obtained by these methods are also correlated via a line graph. Kinematic analysis is performed to determine the probable slope failures associated with adversely oriented discontinuities. The stable excavation angle (β) without any requirement of reinforcement measures is also calculated for the 1% probability of failure. By considering the ongoing excavation for road widening, remedial measures are proposed to acquire safe geotechnical planning along the route.
ISSN:2250-2149
2250-2157
DOI:10.1007/s40030-022-00655-z