LVA Panel Report
We recommend having this report done at the end of each panel. This is a comprehensive report on the longwall performance for the whole panel, or a portion of the panel. The report is published as a PDF document and includes the following..
· Summary, Introduction & Explanatory notes
· Panel configuration
o Start and end dates, Number of shields etc.
· Data quality
o Investigate and report on the quality of the raw leg pressure data collected by LVA during the panel, including noting any gaps or anomalies.
o Histogram-type plot showing data existing or missing, in 10-minute increments across each day.
o Graph of chainage against time
o Plot of all days on which chainage data is or is not recorded
· Shearer movement
o Histogram-type plot showing shearer speed, shearer stopped, or missing data in 10-minute increments across each day.
· A series of detailed plots showing the following parameters for each leg of each shield against individual shears across the face for the entire panel length..
o Time-Weighted Average Pressure (TWAP)
o Number of yield events
o Low set pressures
o Loading rates
o Any calibration issues on leg pressure readings
o Highlighting legs that may be leaking
o Maps of cycle duration times
· Highlight possible “trouble spots”
· Identify weighting events