ANALYSIS OF DEFORMATION PROCESS ON THE NORTH-WEST SIDE OF THE MAIN QUARRY OF JSC "EVRAZ KGOK"

Abstract

The article considers the problem of ensuring the stability of the North-West side of the Main quarry of JSC "EVRAZ KGOK". The results of studies of the deformation process of the rock mass after the start of mining operations on the separation of the North-West side (reducing the gravitational lading) and the impact of technological explosions on the array are given. In the on-side adjucent rock mass of the array different periods of gravitational and tectonic deformation have been noted. In the initial realizing period of blasting and loading operations an increase in the mobility of the array had been noticed.
In the subsequent period of working process on the upper part of the array there has been noted a decrease in the average speed of displacement of reference points in the direction of the worked out quarry space. To reduce the gravitational lading on the array, it is recommended to reduce the angle of inclination of the upper part of the quarry side by simultaneously involving of several ledges in the developing process.