- 期刊
- OpenAccess
Investigating the effect of fractures on unusual gas emission in coal mines; case study of Parvadeh coal mine, Iran
摘要
In the present study, an investigation was carried out on Parvadeh coal mine in Tabas, Iran, to survey the effect of fractures on unusual methane gas emission in coal mines. This coal mine was chosen to be investigated because of its high methane gas content in the coal body and available data from sensors in desired locations. Gas concentration monitoring programs were carried out at the mine site and a large amount of data were collected and analyzed. It is revealed that there is a good correlation between excavating the fracture-bearing faces and high methane gas emission events at the mine site. High gas emissions have been observed before, during, or after excavating the fracturebearing faces. When gas content is high and all boundary conditions are met, rockbursts, faults movement and also mining activities can trigger unusual gas emission, and sometimes the gas gushes are violent enough to fit into the category of gas outbursts. Since the fracture generation is happening before the increase of gas concentration in the air, a sensitive and highly accurate microseismic monitoring system can be used to detect locations of rock fracturing, thus provide an effective means to issue warnings of high gas emission in the working area.
延伸閱讀
- Shpak, Y., Zapisotska, I., Baranov, V., & Terek, O. (2017). Phytotoxicity of the Substrate of Coal Mine Dumps under the Influence of Thermal Power Plant ash and Potassium Humate. Traektoriâ nauki, 3(3), 1(1)-1(7). https://www.airitilibrary.com/Article/Detail?DocID=P20151216015-201703-201705190017-201705190017-1(1)-1(7)
- Dehghani, M., Taghizadeh, M. M., Hashemi, H., & Rastgoo, E. (2013). A Preliminary Assessment of Dispersion Level of SO_2 in Fars Industrial Region, South of Iran, by GIS. Journal of Environmental and Public Health, 2013(), 340-345. https://doi.org/10.1155/2013/670590
- Wang, Z. (2022). Study on Compressive Properties and Failure Characteristics of Fractured Coal. International Core Journal of Engineering, 8(8), 549-565. https://doi.org/10.6919/ICJE.202208_8(8).0074
- Kabanov, E., Korshunov, G., & Magomet, R. (2021). Quantitative Risk Assessment of Miners Injury During Explosions of Methane-Dust-Air Mixtures in Underground Workings. 淡江理工學刊, 24(1), 105-110. https://doi.org/10.6180/jase.202102_24(1).0014
- Tokhmechi, B., Saghravani, S. F., Araghi, P. J., Marvi, H., Borhani, M. E., & Darbani, A. (2016). A real-time approach toward the chemical quality control of rock material (Case study: Gravel mines in Semnan, Iran). International Journal of Mining and Geo-Engineering, 50(1), 13-22. https://www.airitilibrary.com/Article/Detail?DocID=P20160902003-201606-201609020043-201609020043-13-22