試錐作業の分析と標準能率査定法
1965 年 81 巻 930 号 p. 894-906
詳細
1965 年 81 巻 930 号 p. 894-906
The Efficiency Reserch Group of Yanahara Mine, founded in 1953, have engaged in the studies analysing mine works and setting up measures to determine those performance standards available for universal, conditions at workings.
The purpose of these studies is to get the bases of plans, operations and determination of incentive. wages necessary for engineers or supervisors.
Among those studies, this paper is related on Diamond Drilling, and is composed of following items;
(1) General equation of performance standards
(2) Ready Charts to determine the performance standards
(3) Work analysis on the operatinal conditions, i, e. rate of drilling, time for bit exchange and core recovery, accessory time accompanied with driling work, etc.
(4) Case study utilizing above Ready Charts, regarding (a) the relation between the efficiency and representative conditions such as depth of bore holes, rate of drilling, frequency of core recovery, ete.(b) optimun height of boring tower, (c) comparison between wire line type and conventional one.
