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2009•Journal of Water Resources and Architectural EngineeringRequires access

Tunnel Construction under High Ground Pressure and High-expansion Wall Rock

Xiaolin Fan

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Abstract

After a tunnel is excavated,the stress distribution of high-expansion wall rock should be changed,thus pushing the tunnel structure.Combined with the construction of Sijiaotian Tunnel which is the most formidable in the south-west section of China,the optimized construction technique is introduced here along with the excavation section's choice,initial supporting,secondary supporting and monitoring measurement using NATM.

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What this paper is about

After a tunnel is excavated,the stress distribution of high-expansion wall rock should be changed,thus pushing the tunnel structure.Combined with the construction of Sijiaotian Tunnel which is the most formidable in the south-west section of China,the optimized construction technique is introduced here along with the excavation section's choice,initial supporting,secondary supporting and monitoring measurement using NATM.

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Available abstract

After a tunnel is excavated,the stress distribution of high-expansion wall rock should be changed,thus pushing the tunnel structure.Combined with the construction of Sijiaotian Tunnel which is the most formidable in the south-west section of China,the optimized construction technique is introduced here along with the excavation section's choice,initial supporting,secondary supporting and monitoring measurement using NATM.

Key concepts: New Austrian Tunnelling method, Excavation, Geotechnical engineering, Section (typography), Geology, Tunnel construction, Wall rock, Engineering

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