Edit Panel

The function is identical to the section definition portion of Place Panel function. It is used to edit properties of the section of the panel after the panel has been completed. The precedence can be set by either picking from the list, or screen picking.

• Attribute Group: Specifies the attribute group for the panel. Attribute groups may be configured in the Timing Project Manager.
  
• Panel name: This is a required field.
• Panel start: This is an optional field. The Underground Timing  routine have an option for start date that usually makes this field unnecessary. This field can delay the start of a panel independently of the plan start date.
• Easting: The easting coordinate value of the first picked point when the panel was placed.
• Northing: The northing coordinate value of the first picked point when the panel was placed.
• Azimuth: The azimuth from the first to the second picked points when the panel was placed.
• Entry Width: This is used to calculate face feet/meters of advance. This should be set to the width of the panel when working with longwall panels to get the correct advance down the panel. With regards to the scheduling/timing command, this value has a direct impact on the linear feet of advance for the panel. Note that the linear feet of advance accounts for the length of all cross cuts and entries in the panel. The linear feet of advance for a panel is calculated as the Mined Area divided by the Entry Width. For a panel covering 60,000 sq ft, an extraction ration of 0.6, and an entry width of 20, the linear feet of advance in the panel would be calculated as (60,000*0.6) / 20 = 1800. Please note that this calculation assumes that all pillars in panel have similar dimensions).
  
• Prompt for coal qualities: A check in this box brings up the Define panel Attributes dialog box after clicking OK in the main dialog. This is the same dialog that is displayed when defining attribute groups in the Timing Project Manager.
  

• Prompt for retreat options: This option will allow you to select an inclusion polyline for the retreat area of the panel. When this option is enabled, you will receive three command line prompts after clicking OK in the main dialog. An example panel with a separate retreat polyline is shown below.
  Pick a polyline representing a shape of the retreat area: During this prompt, you may select an inclusion polyline for the retreat area of the panel.
  Enter the extraction ratio for remaining pillars: The value entered here defines the portion of the pillars that will be mined. For example, if the pillar will be entirely mined out, enter a value of 1. If only half of the pillar will be mined, enter a value of 0.5.
  Enter the extraction ratio for KEY outside the panel: The value entered here defines the extraction ratio for the portion of the retreat panel outside of the main panel area. If all of the key material in this area will be removed, enter a value of 1. If half of the material in this area will be mined, enter a value of 0.5.
  
  In the below example, we have a panel with an area 60,000 ft^2. The orange polyline represents the retreat area (10 of the 15 pillars will be retreat mined, and a portion of the rib will also be retreat mined). When prompted for the retreat options, the orange polyline is selected. The extraction ratio for the remaining pillars was set to 0.8 (meaning 80% of the pillars will be mined), and the extraction ratio for Key outside the panel area is was set to 0.6. The table below the dialog shows the effective pillar area to be mined and the effective outside area to be mined. These areas combined give the total retreat area to be mined, which is then divided by the Panel Area to give the Retreat Extraction Ratio.
  

• Retreat Extraction: This value represents the area of the panel to be mined on retreat. This is the retreat area divided by the panel area.
  
• Owner: A single owner's name can be assigned to the panel.
• Level Layer Suffix: This is only needed when multi-level mining is to be used. Entering "_LEVEL2" for this field would tell the program that this panel is part of the second level.
  
• Precedence: This box gives the opportunity to set fixed scheduling relationships. Any panels selected must be completed before this panel can start.
  

• Advance Difficulty Factor: A value or a grid can be used to provide difficulty factor input for advance mining in the panel.
• Retreat Difficulty Factor: A second value or grid can be specified for retreat mining independent of the advance mining difficulty rate.

Pulldown Menu Location: UnderGround
Keyboard Command: edit_panel