Catastrophic failure of a raise boring machine during underground reaming operations

James, A2007-01-202007-06-072007-01-202007-06-071997-03James, A. 1997. Catastrophic failure of a raise boring machine during underground reaming operations. Engineering Failure Analysis, vol. 4(1), pp 71-801350-6307http://hdl.handle.net/10204/1427http://hdl.handle.net/10204/1427This paper describes the investigation of the catastrophic failure of a raise boring machine used for underground reaming operations. The results of the investigation indicate that failure was due to the fracture of the 32 drive head bolts, 30 of which had failed as a result of corrosion-induced fatigue. Metallurgical examination confirmed that the bolts had been manufactured in accordance with the SAE J429 Specification. A number of recommendations have since been implemented by the mine, who has also introduced a quality system specifically for the control of drive head bolt sets. The equipment has now operated without problems for several years.599950 bytesapplication/pdfenCopyright: 1997 Pergamon-Elsevier Science LtdUnderground reaming operationsCatastrophic failuresRaise boring machinesCorrosion-induced fatigueEngineeringMaterials sciencesCatastrophic failure of a raise boring machine during underground reaming operationsArticleJames, A. (1997). Catastrophic failure of a raise boring machine during underground reaming operations. http://hdl.handle.net/10204/1427James, A "Catastrophic failure of a raise boring machine during underground reaming operations." (1997) http://hdl.handle.net/10204/1427James A. Catastrophic failure of a raise boring machine during underground reaming operations. 1997; http://hdl.handle.net/10204/1427.TY - Article AU - James, A AB - This paper describes the investigation of the catastrophic failure of a raise boring machine used for underground reaming operations. The results of the investigation indicate that failure was due to the fracture of the 32 drive head bolts, 30 of which had failed as a result of corrosion-induced fatigue. Metallurgical examination confirmed that the bolts had been manufactured in accordance with the SAE J429 Specification. A number of recommendations have since been implemented by the mine, who has also introduced a quality system specifically for the control of drive head bolt sets. The equipment has now operated without problems for several years. DA - 1997-03 DB - ResearchSpace DP - CSIR KW - Underground reaming operations KW - Catastrophic failures KW - Raise boring machines KW - Corrosion-induced fatigue KW - Engineering KW - Materials sciences LK - https://researchspace.csir.co.za PY - 1997 SM - 1350-6307 T1 - Catastrophic failure of a raise boring machine during underground reaming operations TI - Catastrophic failure of a raise boring machine during underground reaming operations UR - http://hdl.handle.net/10204/1427 ER -