Enhancing mine energy efficiency and productivity necessitates the implementation of
longer ore passes, exceeding 300 m, to optimise material transport in underground mass …

Abstract Raise Boring Machines (RBMs) are mechanical miners that are preferred over
conventional drilling and blasting methods for drilling/excavating vertical or inclined shafts in …

Over the past several decades, raise excavation has been widely employed in underground
mining, civil engineering and military engineering. One-step raise excavation with burn cuts …

The wear of excavation tools is considered to be one of the critical factors affecting the
scheduling of shield tunnel construction. There is presently no effective countermeasure to …

Backfilling inaccessible cavity through raise can provide underground support for the active
open-pit operations and the raise must be taken down in a single blast for safety reasons …

Button cutters are the main cutting tools used in Raise Boring Machines (RBMs), particularly
in very hard and abrasive ground conditions where their longer lifespan makes them …

The current study is an attempt to investigate the applicability of full-scale linear rock cutting
tests (displacement controlled) and deterministic approaches to predict performance of raise …

Raises are vertical or inclined openings made to connect two levels of an underground
metalliferous mine. They are developed using drilling and blasting-based technique or by …

The basic aim of this study is to develop empirical models for predicting performances of
pilot hole drilling and reaming for raise boring operations using rock properties and pilot …

Raise boring machines (RBMs) are used for drilling/excavation of shafts and other inclined
structures in mining and construction fields. Proper selection and accurate performance …