Mine roof and rib support with reinforced channel
A mine roof and rib support can be a support member having a roof support arm and a rib support arm, wherein the roof support arm is provided at an angle to the rib support arm. An aperture for a roof bolt is provided through the support member adjacent an intersection of the roof support arm and the rib support arm. A bearing plate having an upper edge and a lower edge, and a through-hole provided therebetween, can be provided wherein the upper and lower edges are positioned in abutment with the roof and rib support arms, respectively, to simultaneously apply force to each arm when a roof bolt is installed through each of the bearing plate and the support member. A flange can be provided at a distal end of one or both of the roof and rib support arms, each flange projecting toward the mine roof or rib.
1. A mine roof and rib support comprising:
a support member comprising a back surface and a front surface, a base portion, an elongated reinforcement portion extending from said base portion, a roof support arm and a rib support arm, said roof support arm provided at an angle to said rib support arm; and
an aperture through said support member for receiving a mine roof bolt, said aperture located at a junction between said roof support arm and said rib support arm.
2. The aperture of claim 1 , wherein said support member comprises longitudinal edge portions extending angularly away from said base portion and terminating in edges.
3. The apparatus of claim 1 , wherein said aperture is defined in said elongated reinforcement portion.
4. The apparatus of claim 1 , wherein said elongated reinforcement portion comprises an embossment extending from said front surface.
5. The apparatus of claim 4 , wherein said embossment comprises a rib.
6. The apparatus of claim 1 , wherein said support member is bent to form each of said roof and rib support arms.
7. The apparatus of claim 1 , further comprising a bearing plate, said bearing plate having an upper edge, a lower edge, and defining a through-hole between said upper and lower plate edges, wherein said upper and lower plate edges are positioned in abutment with said roof and rib support arms, respectively.
8. The apparatus of claim 7 , wherein said bearing plate includes a raised portion in which said through-hole is defined.
9. The apparatus of claim 7 , wherein said bearing plate includes a raised portion surrounding said through-hole.
10. The apparatus of claim 7 , further comprising a mine roof bolt extending through said plate through-hole and said support member aperture.
11. A method of supporting a rock formation comprising:
positioning a support member with a longitudinal reinforcing portion spaced from edges of said support member against a rock formation, said support member having a first arm joined to a second arm and defining an opening intermediate said first and second arms, such that said first arm is positioned against a mine roof surface and said second arm is positioned against a mine rib surface;
positioning a bearing plate having an opening against said support member so that said support member opening is aligned with said plate opening; and
extending a mine roof bolt through said plate opening and said support member opening into engagement with a rock formation to compress said bearing plate against said support member to maintain said support member in contact with the rock formation.
12. The method of claim 11 , further comprising: compressing said bearing plate against at least one of said support member reinforcing portion and said support member edges.
13. The method of claim 12 , wherein said support member includes a base portion from which said reinforcing portion extends and longitudinal edge portions extending angularly away from said base portion and terminating in said support member edges.
14. The method of claim 11 , further comprising providing an embossment in said bearing plate.
15. The method of claim 11 , further comprising positioning a mesh mat between the rock formation and the support member such that the support member contacts the mesh mat to maintain the mesh mat in contact with the rock formation.
16. A stackable mine roof and rib support member comprising:
a one-piece elongated member comprising a roof arm and a rib arm, said roof arm provided at an angle to said rib arm such that said roof arm and said rib arm are connected via a bent portion, said bent portion defining an opening for receiving a mine roof bolt therethrough;
said elongated member having a back surface and a front surface, a base portion, an elongated reinforcement portion extending from said base portion; and
longitudinal edge portions extending angularly away from said base portion and terminating in edges,
whereby said front surface of support member is configured to receive a back surface of another of said support member in overlying and abutting relationship.
17. The support member of claim 16 , wherein said reinforcement portion comprises an embossment extending from said front surface.
18. The support member of claim 17 , wherein said embossment comprises a rib.
19. The support member of claim 18 , wherein said support member has a maximum thickness of 0.2 inches.
20. The support member of claim 16 , further comprising a flange provided on at least one of said roof and rib arms, said flange extending in a direction opposite to said reinforcement portion.