Geotechnical Characteristics in Road Tunnels of Sierra Valle Fértil. San Juan. Argentina

The Sierra de Valle Fertil is located in the west of Argentina (San Juan province). It is being crossed by the National Road 150 that has 40 km in length including six bidirectional road tunnels with a total length of 2000 meters. All tunnels have the same horseshoe shape cross section with a area of 70 m2 . They were designed following criteria given by Highway Tunnels of PIARC "Cross Section Design for Bi -Directional Road Tunnels" of 2004. The first three tunnels are developed through soft sandstones with siltstones and shales (middle Triassic). The next two in slightly cemented sandstones and conglomerates (Lower Triassic) and the last is in rigid greywackes (upper Carbonic). The support provided by the design was estimated by using RMR and Q method.

Bibliographic Details

Main Authors:	Aceituno, P., Giambastiani, M., Rocca, R. J., Martino, R. D.
Format:	Fil: Fil: Aceituno, P. Dirección Nacional de Vialidad, Distrito San Juan; Argentina. biblioteca
Language:	eng
Published:	2014
Subjects:	Geología, PIARC, Sedimentary rocks, Stiff rocks,
Online Access:	http://hdl.handle.net/11086/546177
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