A study of the correlation between dragline diggability and blasting technology at Syberfontein colliery.

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dc.contributor.authorFrimpong, Mensah.
dc.date.accessioned2018-07-03T09:53:20Z
dc.date.available2018-07-03T09:53:20Z
dc.date.issued1994
dc.descriptionA project report submitted to the Faculty of Engineering, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master ofil science in Engineering.en_ZA
dc.description.abstractGiven the high capital intensity of the dragline operation, the mine can not afford to" tolerate fragmentation problems with its concomitant low dragline productivities. At Syferfontein colliery very large boulders and completely unfraqmented sections resulting in Low digging efficiency of the dragline were encountered in the interburden blast, This project, investigates the causes of the blasting related problems with an intent of improving dragline productivity at the minimum possible cost. This is achieved through blast monitoring, evaluation of the existing practice (blast design) using empirical relations, fragmentation assessment using a model, analysis of operators performance and dragline availabilities. Dragline productivity is evaluated in the light of the various productivity indices , viz, fill factor, fill time and BCM/H. The results indicated explosive incompatibility with the blasting environment and. questionable practices regarding blast design and Delay performance. Engineering field controls such as reduction in drill pattern, reduction of VODof explosive and improvement in draqline utilisation are found necessary. Contributing 61% to the total cost I concentrating on reducing draqline cost must receive preference over drilling and blasting cost as it would produce the most tangible advantage in any cost reduction effort. Regression equations relating cbst and productivity are established.en_ZA
dc.description.librarianAndrew Chakane 2018en_ZA
dc.identifier.urihttps://hdl.handle.net/10539/24713
dc.language.isoenen_ZA
dc.subjectBlasting -- South Africa.en_ZA
dc.subjectCoal mines and mining -- South Africa.en_ZA
dc.titleA study of the correlation between dragline diggability and blasting technology at Syberfontein colliery.en_ZA
dc.typeThesisen_ZA
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