PROGRESS OF GEOTECHNOLOGIES WITH INCREASING DEPTH OF DEVELOPMENT OF HIGHLAND DEPOSITS

Abstract

Specific features of the geological structure of the mountainous ore deposits of Kyrgyzstan are described. Distinctive conditions of occurrence of ore bodies are noted. The technologies of combined mining of ore deposits that have been applied to the
present time do not always take into account these conditions. There are serious difficulties in the practice of development these deposits with increasing depth of their development. At the same time, a brief analysis of technologies in the combined development of ore deposits in the republic shows that, at present, the most widespread use has been made of such systems as forced block and sublevel collapsing, floor-chamber and sublevel drifts. The advantages and disadvantages of using sublevel collapsing with the end output of ore for the characteristic conditions of the ore deposits of Kyrgyzstan are noted. It is shown that the use of flexible separating overlap while combined development method using a collapse system led to a significant expansion of the field of their application and a sharp increase of the quality factor of the extraction. The developed technology of pit reserves mining, including application of flexible separating overlap with intra-pit, dumping is described.
Methods of development of ore bodies for which patents for inventions of the Kyrgyz Republic have been obtained are proposed for development of ore bodies with high variability of the industrial mineralization contour, sites with abundant reserves, and steeply falling deposits of minerals.