ABSTRACT

ABSTRACT: The paper describes how instrumented laboratory cutting tests conducted on a full scale boom tunnelling research rig and monitored field trials have led to the development of a method of predicting excavation rates for existing machines or quantifying the specification of machines for a desired excavation rate.

The limitations of compressive strength as a sole determinator of cuttability are illustrated and the advantages of an instrumented cutting test which allows the cutting motor size and boom forces to be determined are given. The importance of providing adequate boom or hold in force is demonstrated.

Keywords:
specification, head design, torque, excavation rate, Machine Excavation Rate, Reservoir Characterization, specific energy, prediction, compressive strength, force component
Subjects:
Reservoir Characterization
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1994. A.A. Balkema - Permission to Distribute - American Rock Mechanics Association
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