NEWS

MINSK - DELIVERY OF THE TBM FOR CONSTRUCTION OF THE THIRD METRO LINE

: https://www.youtube.com/watch?v=AZZ_ObLlgAM


 

Full success "for THE TDM (TUNNEL DISMANTLING MACHINE) !  The machine which dismantled tunnels for a subway line in Hong Kong, receives 4 Innovation Awards:

  • « Product or Equipment Innovation of the Year Award » awarded in London on November 26th by the ITA (International Tunnelling Association)
  • « Trophies of Public Works », awarded on Tuesday, November 19th (FNTP award, Process / Materials category)
  • « Special Award for the Technical Mastery » awarded during the 2013 VINCI Innovation Awards final on Thursday, November 21st.
  • « Solétanche Bachy and Menard Grand Prix » awarded during the SoilTeam agreement on Wednesday, October 16th in Geneva

This machine manufactured by BESSAC for the Dragage / Maeda / Bachy-Solétanche Group Joint Venture and in partnership with MTR (Hong Kong Metro operator) has been used in HONG-KONG within the framework extension of the "West Island Line" subway.

Besides the construction of four Ø 5.30 m tunnels, the project included the partial removal of a former overrun tunnel which was then connected to the new tunnel, bored by a slurry TBM. The precast lining of the existing tunnel (reinforced concrete segments and steel iron rings) had to be removed and the dismantled tunnel had to be filled with a specific backfilling mortar, along approximately 130 meters.

This complex operation below a dense urban area and in a challenging geological context (CDG –Completely Decomposed Granite- with a water head of 30m) has been a total success.

With the TDM, different juries have welcomed a collective commitment to design, develop and operate an atypical machine for a single use.

An innovation which highlight BESSAC technical mastery and opens new opportunities.