| Annotation |
Modern underground mining problems are defined; the main ones are the poor quality of ore mined; movement of mining at a greater depth, followed by a rise of rock pressure; depletion of the mineral resource base due to significant losses of ores as a result of ore pillars abandonment in the development of systems with open worked out area. A large scale introduction of advanced technologies is achieved, based on laying of worked out areas by means of prepared for this purpose tailings, as well as the placement of the technological part of the processing plant in the depths. Significant content in the tailings fines determines the application of paste (slurred) and (or) the granular filling mixtures. Paste (slurred) mixtures are based on the use of fine particles with thixotropic properties. To convert the original state of paste filling mixture — a gel into a sol, a special device is used — mixers-swirlers. One of the possible designs of a swirler is presented. The granular filling mixtures have high flow properties, can be used in cementless version (hydraulic mixtures) and hardening one. They allow additional recovery of underground leaching of metals. The development technology of ore deposits based on the author’s patented method for the development of underground mining and processing complex is suggested, which is achieved by improving the state of environmental and economic efficiency implementation of mining. The main advantages of the proposed technology are: removal from the surface of hazardous and toxic substances, increase of economic efficiency of mining, inclusion of current tailings directly into the production cycle of the underground mining |
| References |
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