Investigation of Cycle Time Segments of Dragline Operation in Surface Coal Mine: A Statistical Approach

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• 作者：Mousa Mohammadi ; Piyush Rai ; Umesh Singh…
• 关键词：Cycle time ; Dragline cuts ; Cut depth ; Statistical analysis ; Coal mine
• 刊名：Geotechnical and Geological Engineering
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：34
• 期：6
• 页码：1765-1774
• 全文大小：1,229 KB
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geotechnical Engineering
  Hydrogeology
  Terrestrial Pollution
  Waste Management and Waste Technology
  Civil Engineering
  
• 出版者：Springer Netherlands
• ISSN：1573-1529
• 卷排序：34

文摘

Dragline is highly capital intensive equipment to procure, operate and maintain in any surface mining operation. Given this, every second of operation of this capital intensive equipment is absolutely important. Improvement of even a single second in the total cycle time has a tremendous bearing on the overall performance of this equipment. In this light, the present paper is an endeavour to critically analyze the cycle time of dragline operations in a major surface coal mine in India. Rigorous statistical analysis has been performed on individual cycle time segments, of complete dragline cycle. The segmental cycle times have been found to be statistically significant and appear to be best represented by lognormal, normal and beta distributions. Furthermore, the mean time of the statistical distribution for segmental cycle time of dragline has revealed the dependence of cycle time on cut geometry and depth. Results have been illustrated in the form of figures, graphs and tables.