PREDICTION OF THE SAFE SERVICE LIFE OF MINE WORKINGS

The paper presents the results of the study of the actual condition and service life of capital mine workings of the mine "Mnogovershinnoye". Typical forms of assessment of geo-logical conditions with subsequent estimation of the time of standing of the mine workings without support were established. The main types of supports and the character of their dis-turbance during the operation of workings have been determined with the subsequent sub-stantiation of the service life of mud-base concrete, metal arch and anchor supports under different conditions. On the basis of the commissioning date of capital mine workings at the mine "Mnogovershinnoe" a list of workings with the expired service life was made; there was stated the necessity of visual and instrumental examination of supports to assess their wear degree with the following repair-restoration works to maintain mine workings in the operable state.