Shield Tunneling Technology Applied to Metro Tunnel Passing through under Expressway Tunnel with Shallow Space Depth
LI Jian-li
LI Yi
Abstract：There was a full length of 797 m of a left metro tunnel between Shuiyangjiang Road Station and Gedadian Station in No.1 Line of Hefei Metro Transportation System .From Gedadian Station , when the tunneling operation was at a location of 133 m ,the shield machine began to pass through un‐der the tunnel at the crossroad between South No.2 Circle and Ma’anshan Road .When the tunneling operation was at a location of 162 m ,the passing through under the crossroad was completed.A mini‐mum space between the crossroad tunnel roadway surface and the metro tunnel roof was 4.5 m and the stratum passed through was a clay stratum mainly. In order to reduce the influences of the shield tun‐neling construction less to the environment ,with an analysis and calculation ,rational shield tunneling parameters were set up.During the shield tunneling process ,the tunneling parameters were seriously controlled to ensure the safety and successful construction and had the expected effect.
Keywords：shield tunnelingshallow space depthtunneling parameterstunnelground subsidence
Publication Date：2015-04-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 8-11 )