Application of digital image analysis for monitoring the behavior of factors that control the rock fragmentation in opencast bench blasting: A case study conducted over four opencast coal mines of the Talcher Coalfields, India
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Sustainable Mining"
DOI: 10.1016/j.jsm.2019.08.003
Abstract: Abstract Drilling and blasting play a very important role in driving the economy of opencast mines, as various mining activities related to strata handling are dependent on the size of the rock mass created due… read more here.
Keywords: control rock; analysis; fragmentation; rock ... See more keywords
Joints and confining stress influencing on rock fragmentation with double disc cutters in the mixed ground
Sign Up to like & getrecommendations! Published in 2019 at "Tunnelling and Underground Space Technology"
DOI: 10.1016/j.tust.2018.08.051
Abstract: Abstract Complex geological factures are often encountered in the tunneling boring machine (TBM) excavation leading to many serious problems, especially the mixed ground conditions involving in the different geological properties should be paid more attention.… read more here.
Keywords: confining stress; fragmentation; rock; mixed ground ... See more keywords
Semi-analytical contact model for analyzing rock fragmentation induced by an indenter
Sign Up to like & getrecommendations! Published in 2020 at "Tunnelling and Underground Space Technology"
DOI: 10.1016/j.tust.2020.103496
Abstract: Abstract Rock indentation is the basic process in drilling and excavation from the mechanical points of view. A better understanding of the fundamental mechanism of rock-indenter interaction is of great significance. This paper proposes a… read more here.
Keywords: semi analytical; model; contact; rock ... See more keywords
Validation of GPD to Model Rock Fragmentation by TBM Cutters
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Geomechanics"
DOI: 10.1061/(asce)gm.1943-5622.0000829
Abstract: AbstractIn this paper, a novel meshless numerical method known as general particle dynamics (GPD) is developed to reveal the mechanism of the rock fragmentation using tunnel-boring machine (TBM) cutters. Rock fragmentation by one cutter and… read more here.
Keywords: tbm cutters; fragmentation; rock fragmentation; numerical results ... See more keywords
The Influence of Fractures Induced by Drill Bit during Rock Fragmentation on Wellbore Stability
Sign Up to like & getrecommendations! Published in 2025 at "SPE Journal"
DOI: 10.2118/228287-pa
Abstract: Wellbore stability is a critical issue in drilling engineering, with most studies focusing on the interactions between drilling fluids and surrounding rock formations. However, the fractures induced by the roller bit during the rock fragmentation… read more here.
Keywords: stability; rock fragmentation; drill bit; wellbore stability ... See more keywords