A development in rock cutting technology |
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| Authors: | M Hood H Alehossein |
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| Affiliation: | 1. Cooperative Research Centre for Mining Technology and Equipment (CMTE), CSIRO, PO Box 883, 2643 Moggill Road, Pinjarra Hills, Kenmore, Qld 4069, Australia;2. Cooperative Research Centre for Mining Technology and Equipment (CMTE) and CSIRO — Exploration and Mining, Qld, Australia;1. School of Resources and Safety Engineering, Central South University, Changsha, China;2. School of Civil, Environmental and Mining Engineering, The University of Western Australia, Perth, Australia;1. State Key Laboratory of High Performance Complex Manufacturing, School of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan 410083, China;2. School of Mechanical and Mining Engineering, the University of Queensland, QLD 4072, Australia;3. CSIRO Energy, PO Box 883, Kenmore, QLD 4069, Australia;1. Chongqing Research Institute, China Coal Research Institute, Chongqing, 400039, China;2. College of Mechanical Engineering, Chongqing University of Technology, Chongqing, 400054, China;3. China Coal Research Institute, Beijing, 100013, China;4. Department of Mining and Mineral Extraction, Zonguldak Bulent Ecevit University, Kilimli, Zonguldak, 67500, Turkey;1. Key Laboratory of Safety for Geotechnical and Structural Engineering of Hubei Province, School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, PR China;2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, PR China;3. University of Chinese Academy of Sciences, Beijing 100049, PR China;4. College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya’an, Sichuan 625014, PR China;1. Deep Exploration Technologies CRC, Department of Petroleum Engineering, Curtin University, Kensington, WA, 6151, Australia;2. Craft and Hawkins Department of Petroleum Engineering, Louisiana State University, Old Forestry Building #125, Baton Rouge, LA, 70803, USA;3. Department of Petroleum Engineering, Curtin University, Australia |
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| Abstract: | This paper describes a novel method of rock cutting — oscillating disc cutting (ODC) — in which the forces acting on the cutting tools, and hence on the excavation machine supporting these tools, are extremely low. Four different techniques are incorporated in the cutting method to achieve this result. The importance of this novel method is that it allows very strong and/or abrasive rock to be machined easily and rapidly without suffering the high rates of tool wear and/or tool failure that are experienced by conventional cutting machines operating in these types of rock. Also the fact that the ODC method requires very low machine reaction forces means that lightweight, and therefore manoeuvrable, mining and tunnelling machines can be employed in the excavation process. In the initial sections of this paper we discuss the physics of the process of rock breakage caused by mechanical cutting tools and the wear and failure mechanisms of these tools. The arguments are given in order to introduce the thinking behind the ODC method. |
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