Design of a Retrofittable Temporary Face Support System. Final, Phase I Report.
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The objective of this research was to design and develop a remotely operated temporary roof support system that would provide a safe working environment between a freshly cut coal face and the last line of permanently supported roof in which to perform roof bolting activities. The system was to take the form of a retrofit package that could be adapted to a majority of the bolters currently in service. The result was an integrated piece of hardware that will retrofit onto virtually all single-boom bolters by removing the drill boom and relocating and modifying the hydraulic controls. The system is composed of three basic components--a pair of cantilevered roof supports that reach forward to the desired line of support, a mast-type drill unit for drilling holes and torquing bolts, and a transverse slide assembly to carry the drill from hole to hole across the entry without relocating either the bolter or the roof support. A converted bolter not only provides a much safer operation, but it is also projected to increase the production speed as well as reduce the manpower required to operate a section.
CP; Final Contract Report;
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Foster-Miller Associates, Inc.