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Cover Picture: Geomechanics and Tunnelling 2/2021

Publication year - 2021

Publication title -

geomechanics and tunnelling

Language(s) - English

Resource type - Reports

SCImago Journal Rank - 0.317

H-Index - 18

eISSN - 1865-7389

pISSN - 1865-7362

DOI - 10.1002/geot.202170201

Subject(s) - engineering , excavation , drilling , geomechanics , cover (algebra) , civil engineering , quantum tunnelling , mining engineering , geotechnical engineering , forensic engineering , mechanical engineering , physics , optoelectronics

From the excavation pit of the future Sydney Metro Pitt Street station, a connecting tunnel had to be constructed underneath a busy road. To secure the station box wall, the AT – Pipe Umbrella System was used, which was installed at a 19° downwards. In close cooperation with the drilling equipment specialist Robodrill, DSI Underground has developed a successful concept for the installation of the AT – Pipe Umbrella System consisting of 60 individual pipes with a length of 18 meters each. For this project, DSI Underground's proprietary squeezed connection for pipe umbrella pipes has been used as a replacement for a conventional threaded connection. (photo: DSI Underground)

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