Performance of Snow Fence at Banihal Top in Himalayan Region
Publication: Journal of Cold Regions Engineering
Volume 29, Issue 4
Abstract
A continuous snow fence of 50% porosity, 130 m in length, and 4.0 m height was installed to overcome the snowdrift problems at Banihal Top (Jammu and Kashmir, India) in the Himalayan region. The avalanche sites, which affect the north and south Portals of the Jawahar Tunnel, have catchment areas near Banihal Top. The width of mountainous ridge at this site is about 60 m except within a central depression area where the width is about 200–250 m. Snow mass is eroded from the southern windward slope and deposited on the northern leeward slope toward the Kashmir valley during the winter. The rates of erosion and deposition of snow are controlled by snow characteristics, the snow surface roughness, terrain features, and the snow fence configuration. The snow at Banihal Top is wet in nature and snow deposition due to snow drifting is found to be about per running meter of snow fence having a height of 4.0 m. The storage capacity of this snow fence is higher than that of previously installed snow fences of 3.0 and 3.5 m heights. The extension of deposited snow on the leeward side of the snow fence is found to be 15–17 times the snow fence height; this is comparatively smaller than the extension of drifted snow mass reported in Western countries. It is observed that the nose of the drifted snow profile is shifted toward the snow fence with a reduction of the snow fence porosity due to snow riming. Change in porosity due to snow riming of the fence reduces its capacity but it serves to accumulate more snow if the riming happened after the aerodynamic equilibrium state is reached. The snow fence has reduced the snow mass accumulation in the formation zone of the avalanche site. It has also helped to prevent blockage of the national highway NH-1 A and the North Portal of the Jawahar Tunnel in Jammu and Kashmir, India.
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Acknowledgments
The author is grateful to Ashwagosha Ganju, Director SASE and Amod Kumar, joint director SASE for their encouragement to develop the new snow fence and guidance to write this paper. The author is also thankful to the scientific and technical staffs of HMED (Hazard Mitigation and Engineering Division, SASE) for their contributions in the installation and maintaining of the structures at the experimental site. The present snow fence of height 4 m was designed and developed under a project funded by Defence Research and Development Organization, India.
References
Bagnold, R. A. (1941). The physics of blown sand and desert dunes, Methuen and Co., London.
Gullickson, D., et al. (1999). “Catching the snow with living snow fences.”, MN/DOT Office of Environmental Services and Univ. of Minnesota Extension Service, 140.
Li, L., and Pomeroy, J. W. (1997). “Estimates of threshold wind speeds for snow transport using meteorological data.” J. Appl. Meteorol., 36(3), 205–213.
McClung, D., and Peter, S. (1993). Avalanche handbook, The Mountaineers, Seattle.
Pomeroy, J. W., and Essery, R. L. H. (1999). “Turbulent fluxes during blowing snow: Field tests of model sublimation predictions.” Hydrol. Process, 13(18), 2963–2975.
Schmidt, R. A. (1980). “Threshold wind speeds and elastic impact in snow transport.” J. Glaciol., 26(94), 453–467.
Schneiderbauer, S., Thomas, T., Johann, F., Walter, H., and Peter, F. (2008). “Computational fluid dynamic (CFD) simulation of snowdrift in alpine environments, including a local weather model, for operational avalanche warning.” Annals Glaciol., 48(1), 150–158.
Tabler, R. D. (2003). “Controlling blowing and drifting snow with snow fences and road design.”, National Cooperative Highway Research Program, Transportation Research Board of The National Academies, Washington, DC.
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© 2014 American Society of Civil Engineers.
History
Received: Oct 10, 2013
Accepted: Sep 19, 2014
Published online: Nov 3, 2014
Discussion open until: Apr 3, 2015
Published in print: Dec 1, 2015
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