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![Fig. 2 Permanent safe haven [25]](profile/Dogukan-Guner/publication/363834775/figure/fig2/AS:11431281087189820@1664486091654/Permanent-safe-haven-25_Q320.jpg)
![Fig. 3 Steel-structured safe haven [29]](profile/Dogukan-Guner/publication/363834775/figure/fig3/AS:11431281087189821@1664486091700/Steel-structured-safe-haven-29_Q320.jpg)
![Fig. 4 Inflatable safe haven [28]](profile/Dogukan-Guner/publication/363834775/figure/fig4/AS:11431281087180958@1664486091744/nflatable-safe-haven-28_Q320.jpg)
![Fig. 5 A schematic view of a refuge chamber [34]](profile/Dogukan-Guner/publication/363834775/figure/fig5/AS:11431281087215817@1664486091787/A-schematic-view-of-a-refuge-chamber-34_Q320.jpg)
Underground mining environments bring occupational health and safety issues with some severe dangers such as mine disasters like explosions. During such events, miners might escape using main access openings, or find a safe haven like refuge alternatives (RAs) to wait and be rescued and evacuated to the surface. In this paper, RAs are explained wit...
Context in source publication
Context 1
... studies regarding the deformation of RAs under explosion by numerical analyses in the literature. These studies include an analysis of the general deformation behavior of only refuge chambers as well as some components, such as one segment of the structure separately. The main structural components of a conceptual refuge chamber are indicated in Figs. 6 and 7. It should be noted that the geometry of the chamber was inspired by the one built in the USBM experimental mine in the 1970s. The aim is to demonstrate the main components discussed within the scope of this section; the drawing may exclude some parts which are not in concern of this study. Current designs may differ from this ...
Citations
... However, the main function of an RA, including mobile and BIP, is to offer a safe haven for miners who are unable to leave their working location because of dangerous gases or a blocked escape path immediately following an explosion. These underground coal mine structures are very similar since existing BIP RA designs are immobile and impractical to move regularly, making them resemble seals (Trackemas et al. 2015: Karadeniz et al. 2022. Panel seals, district seals, and crosscut seals are the three categories in that seals are divided based on where they are located within the mining layout. ...
Power outages and the risk of explosion in disaster areas make the temperature control in hot mine refuge chambers become extremely challenging. In this article, an ice storage cooling mine compressed air device with a volume of 1 m³ was newly developed for high-temperature mine refuge chambers. Both the ice storage performance and the compressed air cooling performance of the device were tested in a systematic manner. A full-size numerical model was established and validated against experimental data. The effects of the heat exchange tubes number, inlet air velocity and inlet air temperature on its thermal performance were analyzed in detail. Results indicate that: (i) the ice storage function is completed within 60 h with the ice being cooled to below −15 °C. (ii) When the number of heat exchange tubes is 18, the device achieves the best thermal performance with an ice melting rate of 85.02 % within 96 h, and the average outlet temperature could be cooled to approximately 20 °C. (iii) increasing the inlet air temperature from 30 to 34 °C could increase the ice melting rate by 4.59 %, and increasing the inlet air velocity from 5 to 15 m/s could increase the ice melting rate by 16.36 %. the rational allocation of cold storage capacity by mixing air supply is the key to improving the utilization rate of the cold capacity and prolonging the effective temperature control time of the refuge chamber.
