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Mine roof and rib support

a technology of rib support and rib support, which is applied in mining structures, excavations, tunnels, etc., can solve problems such as tensile failure, and achieve the effects of reducing vertical deformation, preventing rib sloughage, and increasing shear strength

Inactive Publication Date: 2015-02-26
DSI UNDERGROUND SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a way to strengthen the roof and rib support of a mine to prevent rib sloughage. This is done by using a clamping force to reduce vertical deformation and increase the shear strength of the roof strata. This helps to make the mining process safer and more stable.

Problems solved by technology

However, due to the seriousness of the safety issues involved with correctly supporting mine roof and rib strata and the increasing risk of injury caused by mine roof falls, even safer mine roof and rib support systems are desired.
The tensile failure is due to compression of the center of the mine entry beam caused by its sagging.
The cutters then work up the mine rib and eventually over the mine roof mass and contribute to cantilever roof failure or complete mine entry roof failure at the top of, or above the mine roof bolted zone.

Method used

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  • Mine roof and rib support
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  • Mine roof and rib support

Examples

Experimental program
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Embodiment Construction

[0025]A perspective view of an embodiment of a mine roof and rib support device is shown in FIG. 1. Mine roof and rib support device 100 includes a support member having a roof support arm 110 and a rib support arm 112, wherein the roof support arm 110 is provided at an angle to the rib support arm 112. The angle between the roof and rib support arms 110, 112 can generally be about 90 degrees. However, the angle can vary as needed, or desired, depending upon the angle between the mine roof 202 and the mine rib 204. An aperture is defined in support member for receiving a mine roof bolt, the aperture located away (e.g., preferably about 1 foot or so) from a junction between, or an intersection of, the roof support arm 110 and the rib support arm 112.

[0026]The angle between the mine roof 102 and rib 104 may not be exactly 90 degrees, and the mine roof 102 and / or rib 104 may likely not be perfectly flat. Thus, embodiments of the support member of this disclosure can be sufficiently fle...

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PUM

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Abstract

A mine roof and rib support includes a support member comprising a roof support arm and a rib support arm, the roof support arm provided at an angle to the rib support arm, wherein the roof support arm defines an aperture for receiving a mine roof bolt; a bearing plate defining a through-hole, the bearing plate being positioned on the surface of the roof support arm, wherein the bearing plate through-hole is operatively aligned with the roof support arm aperture; and a mine roof bolt extending angularly through the through-hole of the bearing plate and the roof support arm aperture, the mine roof bolt being configured to compress the bearing plate against the support member. The bearing plate is positioned on the surface of the roof support arm away from the angled junction of the roof support arm and the rib support arm.

Description

RELATED APPLICATION[0001]This application claims the benefit of U.S. Provisional Application Ser. No. 61 / 869,288, filed on Aug. 23, 2013, which is incorporated herein by reference in its entirety.BACKGROUND[0002]1. Field of the Disclosure[0003]This disclosure relates to a mine roof and rib support, more particularly to a mine roof and rib support having a roof support arm, a rib support arm, a bearing plate and a mine roof bolt.[0004]2. Discussion of the Background Art[0005]Mine roof and rib (sidewall) control is important for the safety and well being of miners. Surface control is critical to effective mine roof and rib support systems. Surface control devices with adequate characteristics can help reduce or even eliminate progressive roof and rib failures.[0006]Mine roof and rib supports are commonly used in underground mining, excavating, and tunneling operations to support and control the overhead and lateral rock strata. In one conventional mine surface control system, a series...

Claims

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Application Information

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IPC IPC(8): E21D21/00
CPCE21D21/00E21D21/0086E21D11/006
Inventor PINKLEY, JAMES EDWARDCHEN, JINSHENGOLER, MARC RENNSHAPKOFF, SCOTT A.
Owner DSI UNDERGROUND SYST