COAL DUST DISPERSE COMPOSITION EFFECT ON THE EXPLOSIVITY RISKS
Journal Title: Вестник научного центра по безопасности работ в угольной промышленности - Year 2019, Vol 0, Issue 2
Abstract
The article discusses the results of experimental studies of coal dust dispersed composition effect on explosive hazard indicators: the value of flame propagation lower concentration limit (NKPR or NPV), the maximum explosion pressure and the pressure rise rate. A series of tests results in a 20-liter blast chamber are shown. Using the example of DG energy coal with a yield of volatile substances of 37.3%, an increase in the maximum explosion pressure by 23-40% and an increase in the rate of pressure build-up by almost 10 times with a decrease in the maximum particle size from 212 to 25 μm are considered. At the same time, the dynamics of the lower concentration limit of flame propagation with a change in the dispersed composition of coal dust was investigated. The practical aspects of the dispersion composition influence on coal dust explosiveness degree in full-scale explosive experiments are considered.
Authors and Affiliations
S. B. Romanchenko, M. O. Devlikanov
Keywords
Related Articles
- EP ID EP645084
- DOI -
- Views 93
- Downloads 0
MOVABLE STUBS" AND "AIRBAGS" FOR MINES?
The possibility of creating in the tunnel tunnels large diameter barrage system, known in the automotive industry as a "airbag". The main parameters of its working capacity - the response time - are made when filling the...
THE EXPERIENCE OF USING DIGITAL TECHNOLOGIES IN ASSESSING THE TECHNICAL CONDITION OF DEEP FORMATION DEVELOPMENT COMPLEXES
The use of fundamentally new SHM-type complexes for open-underground mining of coal seams poses an acute problem of the transition from a scheduled preventive maintenance system to a preventive maintenance system based o...
POINT METHOD RISK EVALUATION OF YAREGA DEPOSIT OIL MINES WORKERS
The article discusses issues of preserving the health of workers performing their labor function in accordance with the employment contract for mining and extraction of high-viscous oil using the thermo-mining method; al...
CONDENSED PLASMA AS A GENERATOR OF EARTHQUAKES?
Reid's theory, which explains the origin of earthquakes as the release of elastic deformation energy by the earth's crust, does not allow to create deep-focus earthquakes’ theory. We can confidently say: - if humanity ha...
COAL MINE WORKERS LIFE SUPPORT SYSTEM IN CASES OF UNDERGROUND FIRES COMPLICATED BY METHANE-AIR MIXTURE EXPLOSIONS CONTROL AND FIGHTING
The article describes the main provisions of coal mine workers life support system at control and fighting the underground fires complicated by methane-air mixture explosions. The classification of the main ways to extin...