In the literature, mostly, pre-failure behaviour of the intact rock in static and rarely in cyclic loading is reported. In various earlier publications on the subject by the authors, pre-failure fatigue behaviour of intact rock is discussed. The post-failure behaviour of the intact rock in the laboratory...

Processes such as Underground Coal Gasification (UCG), Enhanced Oil Recovery (EOR) and underground disposal of nuclear waste involve the exposure of the surrounding rocks to extreme temperatures. At such high temperatures, the rock suffers substantial structural damage due to the anisotropy in the geotechnical...

The acoustic emissions are the high frequency waves caused by the sudden release of energy from local points within a loaded rock specimen. In common terms these emissions can be related to the formation of microcracks within the rock structure. As the failure propagation in a brittle rock is very much...

Right from the outset of the experimental determination of rock stress-strain response, researchers are performing uniaxial and tri-axial compression testing on the cylindrical specimens. In the last two-three decades researchers have made an attempt to develop constitutive model considering anisotropy,...

Current underground mining scenario is inclining towards mechanized drilling and blasting since it proves advantageous in many ways like controlled excavation profile, limited ground vibrations and better ground control, higher rates of advance, enhanced mine development rates besides maintaining a balance...

This paper presents the results of laboratory investigation, field geotechnical investigations and numerical analysis for understanding the stability of overburden Material including Fly ash in Jindal power opencast coal Mine, India. Numerical models were used for estimation of stability of the back...

This paper presents an experimental study on the static indentation tests on six types of rocks namely marble, limestone, basalt, steel gray granite, moon white granite and black galaxy granite using commercial drill bits (indenters) of spherical button type of 35mm, 38mm, 45mm and 48mm diameter to determine...