TECHNOLOGICAL ROUTES OF OPENCAST MINING AT DZHEROI-SARDARINSKOE DEPOSIT OF FLUORITES

摘要

Geological structure of Dzeroi-Sardarinskoe deposit of fluorites is described. Opening rocks are successfully separated on external opening (for rocks located under the First fluorite layer) and internal opening (for rockslocated between the First and Second fluorite layers). The results of additional engineering-geological studies in the external opening of quarry fields, planned for the priority development, are presented. Taking into account these results, annual reduced expenses during wholeperiod of the development of these deposits are presented for stream and cyclic technological routes. The conclusion about expedience of usage of the last route is made.