Ventilation for New Highwall Mining System.
Proc 4th Us Mine Ventilation Symp Soc Min Metall & Exploration Wilton Company, 1989 :209-216
The U.S. Bureau of Mines, in cooperation with an American firm, has been contributing toward the creation of a new highwall mining system for extracting coal in active, unreclaimed contour strip mines in the United States. The prototype system features the computer-based, remote control, video operation of a thin-seam continuous miner. Haulage is accomplished remotely also with a 76-m (250-ft) long multiple-unit continuous haulage conveyor system on rubber-tired vehicles. One aspect of this multifaceted effort has been to design a ventilation system for removing dust generated at the face during the extraction process. The remote mining system eliminates the need for personnel in the mined workings. Ventilation is required to remove visible dust from the area inby two video cameras. These cameras are located approximately 6 m (20 ft) from the face, one on either side of a modified Jeffrey 102hp continuous miner. Removing the dust from this area provides the remote operator with constant visual monitoring of coal extraction at the face and thus ensures the effective operation of the mining system. A ventilation system was designed for use in a mine opening with a maximum cross-sectional area of roughly 4 sq m (44 sq ft), excluding the mining machinery. This paper describes the ventilation system and discusses how it was developed in view of the constraints imposed by the mining equipment, mining conditions, and extraction process.
Proc 4th Us Mine Ventilation Symp; Soc Min, Metall, & Exploration, Wilton, Co, 1989, Pp 209-216