Support failures in mine drifts represent potential hazards that threaten underground safety and productivity. The aim of this study is to determine the reliability index associated with rock supporting elements used Ridder-Sokolny mine, an located East Kazakhstan. Numerical simulations drift support First Order Reliability Method (FORM) were employed carry out analysis. Several cases considere...

The paper deals with the subject of rehabilitation and mechanical modernization extraction plant within mining operation salt mine from Slanic Prahova region. serves 23 August shaft Unirea mine, also this has been converted into a tourist mine. installation consists in change cutting wheels tower due to excessive degradation, requiring redesign under strict conditions, extension saline water sy...

The Pike River mine (PRM), an underground coal mine in New Zealand (NZ), exploded in 2010. This paper analyses the causes of the disaster, with a particular focus on the systems engineering and organisational contributions. Poor systems-engineering contributed via poorly designed ventilation, use of power-electronics underground, and placement of the main ventilation fan underground. Management...

The 'Agios Philippos' lead-zinc mine in the Kirki region (NE Greece) is now closed, but its legacy of heavy metal contamination remains at the site. At present, management of the contaminated land is of major concern. The area is in a reclamation process and requires immediate remediation action, whereas human risks need to be carefully evaluated. In order to assess these risks, samples from ar...

nitrogen oxides and carbon monoxide gases together with dust are known as the major pollutants arising during the blasting operations using the ammonium nitrate-fuel oil (anfo) explosive at the sungun surface mine, located in the northwest of iran. the pollutants were monitored during some blasting operations at the mine. it was concluded that the gases and dust clouds initially went up to the ...

Based on the FLAC3D numerical software, a roadway excavation and support model was established. The stability of surrounding rock FRP bolt force characteristics in Yuhuasi mining area Jinshandian Iron Mine were analyzed. distribution law plastic zone simulated, deformation simulated. data for 6 months tested site, weak links determined, optimized. Parameters, optimized effect is better, which p...

For individual miners with the phenomenon of accident proneness, this study proposes to establish a competency model of miner safety management. On this basis, entropy-weight method is used to determine the weights of competency indexes at all levels, and fuzzy comprehensive evaluation is applied to score security competency. The computerized solving is realized with the help of Matlab programm...

Underground coal mining is a dangerous industry where the regulatory state may impose tradeoffs between productivity and safety. We recover the marginal tradeoffs using disasters near a mine as shocks that increase future accident costs. We find that in the second year after a disaster, productivity decreases 11% and accident rates decrease 18-80% for mines in the same state, with some evidence...

This paper presents a design for a visual display to be added to mine detection equipment. It is an application of the tenets of calm computing to a safety-critical system by putting cognition outside the mind, aligning inputs within the centre of attention and along the periphery, and juxtaposing stimuli in close proximity to the source of the information, all with the aim of increasing safety...

Communications in coal mines are poor by general industry standards, and generate significant risks in the lack of information available from underground areas. Mines often employ multiple incompatible systems for communication. This report concludes that there is no technical barrier to the upgrading of coal mine communications to equivalent standards of those used by general commercial and in...