Apriori accuracy evaluation for the crosscut in a horizontal plane between the VI horizon and the P2 SD adit of the 'Blagodat' mine

Apriori ocena tačnosti proboja u horizontalnoj ravni između VI horizonta i potkopa P2 SD jame 'Blagodat'

Abstract

  The construction of a crosscut in a sense of mine surveying is a hard and responsible job. This refers especially to the construction of longer crosscuts, considering the fact that, during its construction, there is no possibility for independent control of its execution. Therefore, in such cases, it is necessary to carry out prior analysis of the crosscut accuracy, where, based on all required elements, total standard tolerance of crosscut is to be calculated, and this must be less than default permitted tolerance. This paper shows a priori analysis of the crosscut accuracy that is to be executed with length of 1,192.43 m at the lead and zinc mine 'Blagodat' for the purpose of ore transport.