Impact resistant cambered lagging element

Abstract

The present invention provides cambered impact resistant lagging roof panels for an arch support assembly which is designed for withstanding the effects of rock bursts in an underground mine. The impact resistant panels are aligned in a parallel series with their cambered faces facing upwardly and positioned transversely between adjacent sets of steel arch supports of the assembly. The impact resistant lagging panels are constructed as C-shaped metal channels with their channel openings facing downward. The panels are retained between adjacent beams under compression.

1 . An impact resistant lagging panel assembly comprising;
 spaced parallel beams; and   a parallel series of elongate impact lagging panels cambered from end to end in the same direction of perceived impact and positioned transversely to said beams and supported by and between said beams.   
     
     
         2 . The assembly of  claim 1 , wherein said panels are retained between said beams under compression. 
     
     
         3 . The assembly of  claim 1 , wherein said panels are metal C-shaped channels with their camber extending away from the channel opening. 
     
     
         4 . The assembly of  claim 3 , wherein said panels are retained between said beams under compression. 
     
     
         5 . An arch support assembly for withstanding the effects of rock burst in an underground mine, comprising:
 an aligned series of spaced arch supports; and   a parallel series of roof panels which are upwardly cambered between the ends thereof and transversely supported by and between said arch supports.   
     
     
         6 . The assembly of  claim 4 , wherein said panels are retained between said arch supports under compression. 
     
     
         7 . The assembly of  claim 5 , wherein said cambered metal roof panels are metal C-shaped channels with their channel openings facing downward. 
     
     
         8 . The assembly of  claim 7 , wherein said panels are retained between said arch supports under compression. 
     
     
         9 . An arch support assembly for withstanding the effects of rock burst in an underground mine, comprising;
 an aligned series of spaced arch supports, each support including a spaced pair of legs and an upwardly cambered cap beam having opposite ends thereof secured to upper ends of said legs;   a parallel series of roof panels which are upwardly cambered between their ends and transversely supported by and between adjacent of said cap beams; and   tie rods tying said adjacent cap beams together with said roof panels thereby retained between said cap beams under compression.   
     
     
         10 . The arch support assembly of  claim 7 , said cambered roof panels are metal and configured as downwardly open C-shaped channels.