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Title:	Cover Picture: Geomechanics and Tunnelling 3/2020
Abstract:	The Tren Interurbano rail connection between Toluca and Mexico City includes a 4.7 km long twin-bore tunnel, which was driven by two multi-mode TBMs in heterogeneous geology. During construction of a cross passage between the two parallel tubes, water broke in several times. The section could finally be supported using a combined polyurethane and silicate resin grouting system to fill cavities and seal against water pressure (photo: DSI Underground) (see page 339). Die Zugverbindung Tren Interurbano zwischen Toluca und Mexiko-Stadt beinhaltet einen 4,7 km langen doppelröhrigen Tunnel, der von zwei Multi-Mode-Tunnelvortriebsmaschinen in heterogenen Böden aufgefahren wurde. Bei der Herstellung eines Querschlags zwischen den parallel verlaufenden Tunnelröhren gab es mehrere Wassereinbrüche. Mithilfe einer kombinierten Injektion von Polyurethan- und Silikatharz-Systemen zur Hohlraumverfüllung und Abdichtung gegen das unter Druck anstehende Wasser konnte dieser Streckenabschnitts gesichert werden (Foto: DSI Underground) (siehe Seite 339).
Source:	Geomechanics and Tunnelling 13 (2020), No. 3
Page/s:
Language of Publication:	English/German

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