Universal Method for the Prediction of Abrasive Waterjet Performance in Mining

Eugene Averin

doi:10.1016/j.eng.2017.12.004

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Engineering ›› 2017, Vol. 3 ›› Issue (6) : 888-891. DOI: 10.1016/j.eng.2017.12.004

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Universal Method for the Prediction of Abrasive Waterjet Performance in Mining

Eugene Averin

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Abstract

Abrasive waterjets (AWJs) can be used in extreme mining conditions for hard rock destruction, due to their ability to effectively cut difficult-to-machine materials with an absence of dust formation. They can also be used for explosion, intrinsic, and fire safety. Every destructible material can be considered as either ductile or brittle in terms of its fracture mechanics. Thus, there is a need for a method to predict the efficiency of cutting with AWJs that is highly accurate irrespective of material. This problem can be solved using the energy conservation approach, which states the proportionality between the material removal volume and the kinetic energy of AWJs. This paper describes a method based on this approach, along with recommendations on reaching the most effective level of destruction. Recommendations are provided regarding rational ranges of values for the relation of abrasive flow rate to water flow rate, standoff distance, and size of abrasive particles. I also provide a parameter to establish the threshold conditions for a material’s destruction initiation based on the temporary-structural approach of fracture mechanics.

Keywords

Abrasive waterjet / Energy conservation approach / Depth of cut / Fracture mechanics / Threshold velocity / Mining

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Eugene Averin. Universal Method for the Prediction of Abrasive Waterjet Performance in Mining. Engineering, 2017, 3(6): 888‒891 https://doi.org/10.1016/j.eng.2017.12.004

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