EBZ260 Roadheader for highway tunnel
EBZ260 Roadheader for highway tunnel

   

  • Roadheader used : EBZ260
  • Project start date : 2014/3/20
  • Project completion date : 2015/4/22
  • Surrounding rock grade: F5
  • Rock hardness at the beginning of the tunnel : 50MPa;
  • Rock properties: sand stone mixed with volcanic pebbles.
  • Tunnel section 11m width × 10m height, the first layer (11 * 7 widthxheight);
  • Working nine hours a day, progress achieved was 154cbm / day;