Ultra-fast science is an important new research frontier that is driving the development of novel sources for generation of extremely short x-ray and electron pulses. Recent advances in femtosecond lasers have stimulated development of femtosecond x-ray sources that allow the study of matter at the time scale shorter than period of oscillations of atoms in molecules, ∼ 100 fs. The next breakthr...

Exploring the phenomenon of surface cracks and abnormal ground behavior during coal mining under gully landforms, laboratory physical similarity simulation models were established to study movement characteristics laws working faces different methods landforms. The results indicate that in cases when a roadway is situated below top slope, corresponding deformation surrounding rock aggravated by...

It is shown that the creation of variants resource-saving systems for development long-column mining one main directions improving technological schemes operations in mines Kuang Nin coal basin. They provide a reduction losses inter-column pillars and cost maintaining preliminary workings fixed with anchorage. The implementation these difficult (and some cases practically impossible) when tight...

When mining ore bodies in Kryvyi Rih iron basin, underground mines apply open stoping or bulk caving systems proportion of 55% to 45%. Most prefer with pillar caving. Yet, rock pressure contributes growth costs for workings maintenance and deterioration extraction indices. Rock mass indices can be enhanced by application a protectve structure the upper part block that will enable additional dec...

Spontaneous combustion of coal remains an important problem for mines, which can lead to explosion methane and dust. Accidents associated with spontaneous cause significant economic losses mining companies, as well entail social damage – injuries loss life. are known at the Kuzbass occurred a result negligent attitude danger coal, victims were dozens people. The analysis emergency situations sh...

Stope design is a core discipline within mining engineering. This study analyzes the current state-of-the-art of stope through survey addressed to industry professionals. In research dominance empirical methods has slowly shifted towards numerical methods. Recent advancements have mostly focused on development optimization algorithms. The consisted 19 questions and was distributed experts via e...