In coal mine goafs, spontaneous combustion of can result in methane accumulation, which raises the danger explosion disasters. As an atmospheric control tool, ventilation is applied to ensure air quality for avoiding disasters underground mines. However, during process impact dilution on possible explosions induced by has not been well investigated. this study, a validated gas flow model enviro...

The water inrush from the roof of coal mine is closely related to movement failure overburdened rock and height water-conducting fracture zone. In this work, based on research background disaster prevention control No. 2 seam roofs in Jinxinda Coal Mine, stability characteristics overlying working face are analyzed through combining theoretical analysis numerical simulation. According theory ke...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 introduction: disasters whether natural or man-made can inflict widespread damage in every society. disaster effects on hospitals were discussed by many specialties in many fields. the aim of this article was discussion disasters effect on medical records department, which responsible for safeguard keeping of patient medic...

The long-term coal mining in areas has destroyed the original ecological system and resulted a series of geological environmental problems. In this paper, area Gaoping City is taken as subject, field investigation, data analysis, statistics, summarizing are performed to classify problems area, identify causes water soil pollution, surface vegetation destruction occupying land resources, mine di...

The Yanzhou coalfield is an important coal production base in north China, wherein a huge amount of mine drainage has occurred; however, there been relatively little research on the multi-layer groundwater system. In this study, Dongtan Coal Mine was considered as object and total 95 samples were collected. Furthermore, hydrogeochemical statistical methods employed to better understand characte...

As the coal mine gets deeper and stopes’ structures become more complex, gas spontaneously burned composite disaster seriously threatens efficient operation of mines. To study interaction process disaster-causing mechanism spontaneous combustion (GCSC), this paper establishes a numerical model to influence drilling location/pressure N2 injection on evolution in goaf. The simulation shows that c...

In order to prevent the multi-dynamic disasters induced by rock burst and roof water inrush in strong coal seams under multi-aquifers, such as is case with 207 working face Tingnan mine considered this study, exhibited characteristics of two types dynamic disasters, namely inrush, were analyzed. Based on lithology predicted caving height roof, contradiction between was light these analyses, an ...

The health and productivity of mining operations are negatively impacted by coal mine fires, making them dangerous. It happened everywhere, in both working abandoned mines. This study seeks to review provide technical analytics potential fires fire detection a Dual-Cab suppression system. Analysis was done on like spontaneous combustion, flammable gas explosions, cab vehicle fires. Additionally...

Converted from a historical building, Çankırı Museum is one of the immovable cultural properties used as museum. Within context this study, brief history, structural and spatial features restoration exhibition works carried out in museum were examined. As con-tribution to risk assessments which human health priority, disaster risks for artifacts buildings where are exhibited, also necessary arc...

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 ...