Research into the measurement method of medium-length hole mining with rock drilling jumbo

In medium-hole mining with drilling rigs operated by two persons,we usually use traditional measurement method.This method is imprecise and influences accuracy of drill hole positioning and construction which will lead to uneven distribution of drill holes and deviation between design and construction.It may also lead to overbreak,underbreak,irregular contour of stopes and exposing F1 faults.This paper presents a set of measurement schemes according to characteristics of rock drilling jumbo which has been successfully applied in medium-hole mining of Sanshandao Gold Mine.Accuracy of field operation,efficiency and security have been greatly improved.It provids guarantee for holistic quality of construction and security.Finally,it obtaines a desired result and can be generalized or used for reference by same industry.