Unit of competency Outline

Date retreived
23/07/2026 4:50 AM AWST

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Design, develop and maintain pillar system and ground control

Design, develop and maintain pillar system and ground control

Unit of competency
National Code
RIIMSM306D
State Code
WH454
TGA Status
Deleted
DTWD Status
Deleted
Current Release Number
2.00
Current Release Date
07/12/2014
View on TGA
State Implementation and Classification
Approved Date
29/05/2014
Field of Education
030303 - Mining Engineering
Original Release Date
29/05/2014
Nominal Hours
60
Description
This unit describes a participant’s skills and knowledge required to design, develop and maintain pillar system and ground control in Metalliferous Mining (Small Mines).This unit is appropriate for those working in operational roles.Licensing, legislative, regulatory and certification requirements that apply to this unit can vary between states, territories, and Industry sectors. Relevant information must be sourced prior to application of the unit.
Notes
Elements and Performance Criteria
1. Plan and prepare for design, develop and maintain pillar system and ground control
  • 1.1 Access, interpret and apply pillar system and ground control documentation and ensure the work activity is compliant
  • 1.2 Obtain, read, interpret, clarify and confirm work requirements
  • 1.3 Select and wear appropriate personal protective equipment appropriate for work activities
  • 1.4 Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
  • 1.5 Select, and check for faults, relevant tools/equipment for the activity
  • 1.6 Determine location of materials/ore to determine design parameters
  • 1.7 Identify the potential hazards which could have an effect on pillar design and layout
  • 1.8 Identify and address potential risks, hazards and environmental issues, and implement control measures
  • 1.9 Identify the characteristics and properties of the roof to determine the span that can stand unsupported
  • 1.10 Identify ground conditions where secondary support will be needed
  • 1.11 Evaluate the effect of any adjacent mines and incorporate in pillar design
2. Develop pillar system
  • 2.1 Plan and prepare for pillar development according to pillar design parameters
  • 2.2 Visually inspect work area to ensure safe access
  • 2.3 Ensure work area is properly ventilated before entry
  • 2.4 Inspect and assess site conditions and determine if scaling is required and take appropriate action
  • 2.5 Ensure that dust suppression and/or extraction is prepared and ready for use
  • 2.6 Arrange communications with other relevant personnel
  • 2.7 Conduct pillar development safely and efficiently
  • 2.8 Continuously monitor ground conditions and modify operation to maintain safe conditions
3. Extract pillars
  • 3.1 Identify the strategic pillars which must not be removed for roof stability
  • 3.2 Establish and observe a retreat system
  • 3.3 Prop ground surrounding pillar before pillar removal
  • 3.4 Extract selected pillars starting furthest from shaft, in a systematic manner
  • 3.5 Prop ground area previously held by the removed pillars
  • 3.6 Continuously monitor ground conditions and modify operation to maintain safe pillar removal
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