Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg
Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg
Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg
Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg
Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg
Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg
Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg
Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg Chenani Nashri Tunnel Portal (2017) 2017 - Geobrugg

Chenani Nashri Tunnel Portal (2017)

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Rua
NH 44, Chenani Nashri
Código postal
182141
Lugar
Udhampur, Jammu & Kashmir
País / Região
Índia
Ano de instalação
2017
Cliente
N.H.A.I. (National Highways Authority of India)
Engenharia
IL&FS Transportation Networks Ltd.
Objecto protegido
Estrada, Infra-estrutura
Sistemas
TECCO® G65/3
Protecção contra a corrosão
GEOBRUGG SUPERCOATING®
Área estabilizada
32000 m²
Altura do talude
70 m
Inclinação do talude
65 ° - 70 °
Revegetação
Sim
Geomalha de controlo de erosão
Sim
Exposição
Norte
Outras aplicações instaladas
Protecção contra desprendimentos
Situação inicial

The site was initially proposed to be treated with shotcrete but persistent seepage of water which caused slope failures and cracks on the portals led the concessionaire to go for an alternate solution which does not only stabilize the slopes but also offers a green solution and allows the hydrostatic pressure to disperse. National Highway Authority of India decided to actively stabilize the tunnel portals. A protective measure had to be selected to stabilize the exposed cutting against superficial instabilities, as well as tilts and slides of individual blocks and rockfalls.

The area of the slopes to be treated and protected amounts to a total of 32'000 m² which includes 4 berms and the top path up to a maximum height of ca. 55 m.

Descrição

The slope stabilization solution consisted of both active and passive protection measures.The flexible slope stabilization system consisting of TECCO® System and coir mat, system spike plates and soil nails had been selected. 

Each berm is stabilized using rock-bolts of a maximum depth of 20 m in conjunction with high tensile steel wire mesh. Perforated drain pipes, wrapped in geotextile, at an interval of 6.0 x 6.0 m are also installed to allow excess water to pass.

In addition, vertical and horizontal drainage channels are provided to channelize rain and excess water to pass and not accumulate and seep under the slopes. Variable grid patterns of 2.0 x 2.0 m and 2.5 m x 2.5 m are adopted on this project. 32 mm thick, fully threaded rock-bolts were used in this project and total drill lenght achieved is approximately 11'0000 m.

An additional GBE-500A rockfall barrier line was installed which can absorb impact energies up to 500 kJ.

See also our rockfall project Chenani Nashri Tunnel Portal (2)

O seu contacto local

Kevin H. Coyle
Kevin H. Coyle
Regional Manager Northeast
Riscos naturais
Geobrugg North America, LLC
3 Beaudet Terr
Columbia CT 06237 / Estados Unidos
Telefone +1 860 377 3230

Formulário de contacto

Saleh Feidi
Saleh Feidi
Regional Manager California
Riscos naturais
Geobrugg North America, LLC
8921 Emperor Ave.
San Gabriel, California 91775 / Estados Unidos
Telefone +1 909 706 8964

Formulário de contacto

John Kalejta
John Kalejta
Regional Manager Central US
Riscos naturais
Geobrugg North America, LLC
3215 67th Avenue Pl
Greeley CO 80634 / Estados Unidos
Telefone +1 505 220 1404

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Bob Lyne
Bob Lyne
Regional Manager Southeast
Riscos naturais
Geobrugg North America, LLC
8004 Windspray Drive
Summerfield NC 27358 / Estados Unidos
Telefone +1 336 337 0945

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Pierce Runnels, Civil Engineer
Pierce Runnels, Civil Engineer
General Manager Geobrugg North America
Riscos naturais
Geobrugg North America, LLC
22 Centro Algodones
Telefone +1 505 771 4080
Telemóvel +1 505 400 0796

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Tim Shevlin
Tim Shevlin
Sales Director
Riscos naturais
Geobrugg North America, LLC
4676 Commercial St. SE, PMB 174
Salem OR 97302 / Estados Unidos
Telefone +1 503 423 7258

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