ABSTRACT
To increase the strength of artificial local massif of stress concentration arising at the individual elements of the chambers in the filling mixturecomprising increasing proportion of cement. Under the conditions of intensive mining operations and manifestations of rock pressure, and the use of massif explosions necessary mechanical properties achieved by increasing the flow of cement in filling mixture is not always possible. Partial collapse of the filling massif to the chamber in the second stage of mining floor leads to the contamination of the ore massif. Increases of filling operations costs and risks associated with downtime due to hardening of mixture in pipes, their mounting/dismounting works.
