Meshblock Concrete Seals Under Highly Convergent Conditions
Meshblock Concrete Seals Under Highly Convergent Conditions
3 PagesMESHBLOCK CONCRETE SEALS UNDER HIGHLY CONVERGENT CONDITIONS Queensland, Australia Site Profile Newlands Underground Extension, a longwall mine located in the northern Bowen Basin and part of the Glencore Group. The Situation The NUGX longwall blocks were started in 2004 and the coal seam in this area was located in a bowl with developing workings sometimes being flooded from above during Summer monsoonal rain events. There was a genesis of ventilation seal development with the mine sealing initially with polyurethane and aggregate core seals followed by Minova in 2009 with FB200 high yield grout plugs and finally in more demanding strata conditions Meshblock high strength concrete seals. Panels P12 to P08 were extracted down the dip due to constraints on develo
