Experimental Study of the Shear Strength of Cobalt-Rich Crusts

Abstract:

The shear strength parameter of cobalt-rich crusts can be used to design cobalt-rich crusts mining head. The shearing test of cobalt-rich crusts sample was done with different angle shearing testing apparatus.Firstly, the cobalt-rich crusts sample with the size of 50mmx50mmx50mm cube was clamped in the variable angle plate.Secondly, the sample ware loaded till to be damaged. Lastly,the damaged load were recorded at the degree of 50, 60 and 70 to establish their shearing strength and normal stress empirical formula.According to the testing result, its cohesion and internal friction angle parameters are respectively 0.275MPa and 54.43 degree. Restricted by the number of samples and limited by laboratory testing,in-situ shearing strength test should be carried out to improve the proposed empirical formula.

• Periodical: Applied Mechanics and Materials (Volume 419)
• Pages: 576-580
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.419.576
• Online since: October 2013
• Authors: Hong Yun Wu, Zheng Chen
• Keywords: Cobalt-Rich Crust, Cohesion, Internal Friction Angle, Shear Strength Test

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