Shaft sinking is one of the main parts in underground mine planning. Shaft has various applications in underground mines e.g. minerals exiting flow, gases entrance or exit way, stope developments for exploitation etc. Considering that this section requires an abundance of expenses, management always following the election is the way that both terms have the technical considerations, economic co...

Cosmic ray bursts (CRBs) from mergers or accretion induced collapse of neutron stars that hit an Earth-like planet closer than ∼ 1 kpc from the explosion produce lethal fluxes of atmospheric muons at ground level, underground and underwater. These CRBs also destroy the ozone layer and radioactivate the environment. The mean rate of such life devastating CRBs is one in 100 million years (Myr), c...

Журнал Уголь, угольная промышленность, отрасль, итоги работы угольной отрасли, промышленности, горная, горные, горное, горная техника, экономика, горные машины, выставки, история горного дела, перспективы топливно-знергетический, подземные работы, открытые шахтный транспорт, шахтное строительство, охрана труда, промышленная безопасность, реструктуризация, дегазация, рынок угля, переработка каче...

Abstract The application of an active seismic method for detecting the source location underground nuclear explosion (UNE) is ongoing field research. objective in On-Site Inspection (OSI) to detect static signatures such as cavity created by UNE. Along with characteristic signatures, UNEs produce dynamic phenomena groundwater mounding, which gradually revert pre-test conditions. These are obser...

Purpose The purpose of this paper is to solve the problem that location initiation point cannot be measured accurately in shallow underground space, proposes a method, which based on fusion multidimensional vibration sensor information, locate single sources. Design/methodology/approach First, paper, using characteristics low multipath interference and good P-wave polarization near field, adapt...

Sulfide ores play an extremely important role in the development of mineral resource base Russia, as a source rare, non-ferrous, and precious metals. However, sulfide ore deposits is associated with risk dust explosions, oxidative processes that lead to spontaneous combustion ores. The article substantiates urgency solving problem reducing risks taking into account changes balance gold-sulfide ...

background: fire and explosion hazards are extremely important in processing units. this study was performed to identify the risk centers, the potential damage caused by fire and explosion, and the days of production cessation in the processing company. materials and methods: the present qualitative case study was conducted using dow’s index in 2015. the fire and explosion hazard index and leve...

The sudden explosion of methane during underground coal mining is a major dilemma. To mitigate its occurrence and reduce the extent diffusion, gas drainage operations are carried out before mining. This paper investigates flow in block order to calculate pressure molecule velocity for operation. A piece surrounded by cleats was used geometrical modeling numerical simulation. Movements fluid mol...