Pebrianto, Rosihan and Asof, Marwan and Susilo, Budhi Kuswan and GOFAR, NURLY (2014) Evaluation of Factors Affecting Ripping Productivity in Open Pit Mining Excavation. The Electronic Journal of Geotechnical Engineering Vol, 19. pp. 10447-10456.
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Abstract
Excavation of overburden material in open pit mine is usually done by digging, ripping or blasting method depending on the characteristics of materials to be removed. Ripping is usually preferred because it is more economical than the other methods. A common problem related to the ripping is wearing of the ripper tips which resulted in the decline of production. This paper presents the study on factors affecting the ripping productivity at an open pit mining at Bangko Barat, South Sumatra, Indonesia. Four types of common overburden material were selected for this study ie sandstone, tuffaceous sandstone, silty claystone, and silty sandstone. The rocks were characterized based on their compressive strength, cohesiveness, and hardness which were identified based on quartz content. The characterization of rock materials was performed methods suggested by ISRM. The wearing of the ripper tip was measured by measuring the length of the tip while the productivity was measured by the amount of material excavated in an hourly basis. Results show that the quartz content is the most influential factor on the wear rate of the ripper blades and therefore the productivity level. A chart was developed as guideline to determine the ripping production of Caterpillat D9R on the four types of overburden rocks found in Bangko Barat open pit mine.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Open mine, soft rocks, quartz content, Ripper blades, ripping productivity |
| Subjects: | T Technology > T Technology (General) > T60-60.8 Work measurement. Methods engineering > T60.A3-Z General works Work measurement |
| Divisions: | 03-Faculty of Engineering > 31201-Mining Engineering (S1) |
| Depositing User: | Mr Marwan Asof |
| Date Deposited: | 29 Sep 2020 02:02 |
| Last Modified: | 29 Sep 2020 02:02 |
| URI: | http://repository.unsri.ac.id/id/eprint/35843 |
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