COMBINED METHOD OF DELIVERY OF ORE AT UNDERGROUND MINING OF STEEPLY DIPPING POWERFUL ORE DEPOSITS

摘要

The combined method of delivery of ore at underground mining of steeply dipping powerful ore deposits includes a partition of the ore body at its strike to the individual blocks within the height of the floor, the performance of preparatory workings with division of each height unit on sub-stages and, along strike for several sewage panels, of about the same size, with their alternate working off, starting from the top, through threaded openings at each sub-stage, a drilling with deep wells and the mass collapse of ore in sewage panels. The further two-dimensional ore drawing is caried out on the sole of drifts-scrapers with its primary delivery by scraper installations alternately from each outlet production on the sole load-delivery cross cuts, where the load of ore is carried by self-moving load-delivery machines and its further delivery to the side of lying, where the unload is performed into the ore pass, for which the load-delivery cross cuts are made in the block that are interconnected with perpendicular drifts-scrapers. The ceiling of load-delivery cross cuts and the sole of drifts-scrapers are combine to form a ledge on the entire height of the load-delivery cross cut, the primary delivery of ore is carried out, at the same time, from the center of panel in both sides by scraper installations, forming a pile of ore in both load-delivery cross cuts, which are located along the contour of the sewage panel.