EBZ200 Roadheader for Marble rock

• Roadheader used : EBZ200
• Project start time : 2013/7/20
• Project completion time : 2014/8/20
• Rock properties : Marble rock, hard sandstone, fractured rock hardness rating F4
• Section Tunnel height 3.5m, width 4.3m,
• Footage : 10m/day