A METHOD OF COMBINED MINING OF DEPOSITS

摘要

1. A method of combined mining providing for baring a deposit by mine workings and working out the main reserves of levels by opencasting, with safety benches being formed on open-cut's steps, downcast holes being drilled from the surface of steps, and rock bulk being transported along the mine workings of a level being worked out to the surface, characterized in that the reserves of each level are being worked out if viewed from the top, in the direction of open-cut's, with safety prisms being formed at a design contour thereof which prisms are to be broken down during the final stage of work on said each level so that a vertical or close to vertical slope is formed within said level, and rock bulk broken down when doing so is by-passed into mine transport workings of an underlying level, whereupon it is withdrawn to the surface. 2. The method according to Claim 1, characterized in that main reserves of said level are being worked out beginning from an ore chute and to the flank, with self-propelled machinery being involved in doing this, use is made of remote control equipment for working out the safety prisms the resources of the latter are extracted by selective methods, and a safety bench of the flank is formed of a such as to extend through several levels. 3. The method according to Claim 1, characterized in that rocks beyond the openworks contour mat are located within a displacement zone, are reinforced by prestressed anchors and/or by injecting binding grouts via holes drilled through the body of the safety prisms. 4. The method according to Claims 2 and 3, characterized in that steel ropes are arranged to be disposed on the earth surface, said steel ropes being anchored beyond the displacement zone and have the ends thereof monolithed at various depths in rocks beyond the openworks contour to fix them additionally. 5. The method according to Claim 1, characterized in that said safety prisms are drilled out to provide horizontal or ascending holes therein.