BHP Billiton Illawarra Coal (BHPBIC) operates the Bulli Seam Operations (BSO) (Appin and West Cliff Collieries) extracting hard coking coal used for steel production.
Scope of Work
- Driving the travel & conveyor roadway from West Cliff to Appin West (life of mine roadways).
- Appin Area 9 Project is about reclaiming already driven roadways in 516 panel with regards to gas drainage pipes, reticulation cables, redundant service pipes and rib/ roof support to allow the life-of mine belt system to be installed in the same roadway.
- A 3km trunk conveyor system was built and then extended to around 6.5km as production continued.
- It will be around 7km in length when the project is complete.
- Driveage includes the travel road from 14-36ct, and the travel & belt roads from 36-51ct (holing point into Appin West).
- A large water management stub was also driven off 36ct to capture any overflow water in a power loss event.
- Shunt spooling with shuttle car to accommodate long wheeling roads;
- Building the initial conveyor system after reclaiming unused roadways;
- Water management as old workings adjoined the driveage and caused major under floor water make;
- Inrush mining due to mining next to old workings full of water;
- STIS hole intersection and outburst potential;
- High gas content seam with known faulted areas;
- Surging when driving water management sump;
- Mining with existing roadways to be converted into return airways and the use of a scrubber on the auxiliary fan;
- Removal of redundant water management fish tanks and piping;
- Removal of redundant overcasts and triple stoppings after driving through them;
- Installation of standard and nonstandard overcasts.