| 摘要 |
FIELD: mining.SUBSTANCE: method includes separation of the ore square into blocks, execution of development and temporary workings with formation of chambers, their driving by cut-out raise, creation on its basis of a slot and formation of a pull hole in the form of a trench, with subsequent ore crushing and backfilling of the mined-out space by a hardening mix. The development and temporary workings are performed at the same time in the working and airway horizons. When performing the development workings the transport and air heads are driven by rocks, and temporary working are performed across to the deposit strike with entering the development workings in lying and hanging walls. The block is divided into chambers of the first and second orders on the boundary of which border the transportation crossdrifts are passed. In the chambers of the first order the drilling crossdrifts pass which are connected by entries with transportation crossdrifts. Then the chambers of the first order are driven, they are backfilled and after development of strength from the development workings the drilling crossdrift is driven along the centre of chambers of the second order which is connected by entries to the transportation crossdrift. Then the chambers of the second order are driven, they are backfilled and after development of strength the crossdrift is driven along the boundary of blocks, and the third order is driven - the remained pillars between chambers and blocks which then are backfilled.EFFECT: method allows to reduce number of temporary workings and to reduce ore losses practically to their complete elimination.3 dwg |
