Elements and Performance Criteria
- Plan and prepare for the installing underground in-seam directional drilling standpipe
- Access, interpret and apply compliance documentation relevant to the work activity
- Obtain, confirm and apply work instructions for the allocated task
- Identify, manage and report all potential hazards
- Resolve coordination requirements with others at the site prior to commencing and during work activities
- Perform rib consolidation
- Prepare for rib consolidation drilling in accordance with the drill plan
- Carry out rib consolidation drilling in accordance with the drill plan
- Monitor and adjust drilling technique according to conditions
- Identify and remedy operational problems
- Insert and seal grouting tubes into rib consolidation holes in accordance with the rib consolidation drill plan
- Inject grout through the grouting tubes until visible evidence that grout has migrated into any coal rib fractures or cracks.
- Carryout individual grouting completion procedure.
- Drill and ream hole and install standpipe
- Prepare for drilling and reaming in accordance with the drill plan
- Choose drill bit and reamer appropriate to the geology
- Carry pilot hole drilling and ream standpipe hole in accordance with the drill plan
- Monitor and adjust drilling technique according to conditions
- Identify and remedy operational problems
- Prepare and install standpipe in accordance with the drill plan
- Grout in standpipe in accordance with the drill plan
- Maintain communication with all relevant personnel
- Maintain equipment and housekeeping
- Monitor the drill rods for wear and damage and dress and grease threads in accordance with standard procedures or replace rods as required.
- Monitor all drill equipment and hoses and ancillary equipment and carryout remedial action
- Apply environmental controls
- Maintain safe and tidy site for the duration and at the conclusion of the job
- Clean and maintain all grouting equipment