التفاصيل البيبلوغرافية
| العنوان: |
Explosion suppression and fire extinguishing technology in fully - mechanized top coal caving face of high gas and spontaneous combustion during stopping mining |
| المؤلفون: |
SHEN Xin, YAN Wanjun, HE Qilin, LI Jinliang, LU Wei |
| المصدر: |
Meikuang Anquan, Vol 52, Iss 11, Pp 77-81,87 (2021) |
| بيانات النشر: |
Editorial Office of Safety in Coal Mines, 2021. |
| سنة النشر: |
2021 |
| المجموعة: |
LCC:Mining engineering. Metallurgy |
| مصطلحات موضوعية: |
high gas and combustible coal seam, comprehensive explosion suppression technology, explosion triangle, pressure balancing ventilation, high level borehole injection, common treatment of gas and fire, Mining engineering. Metallurgy, TN1-997 |
| الوصف: |
Aiming at the problem that the CO concentration continues to exceed the limit and spontaneous combustion in the goaf after the 1413 fully mechanized mining face of Zhongxing high gas mine of Shanxi Fenxi Zhongxing Coal Industry Company has stopped mining, through analysis, it is concluded that the overlying coal rock in the goaf is broken to form air leakage fissures and the increased air leakage due to gas drainage are the main reasons why the fire in the goaf cannot be extinguished. In order to solve the problem of fire area control under the coexistence of gas and fire, mined-out area is adopted to establish the network monitoring system, integrated explosion suppression and efficient integrated fire control measures, namely arrange mesh temperature burning gas measurement and control system for real-time monitoring, apply rapid oxygen-consumed inerting technique of making the fire area out of explosion, reduce the air leakage in the goaf through the pressure control air technology, use the injection plugging technology to block the air leakage channel, implement the cooling and energy-absorbing technology to continuously reduce the temperature of the fire zone. The results show that the pressure difference between the inside and outside of the 1413 fully-mechanized working face is less than 15 Pa, the volume fraction of CO and O2 in goaf decreases to the normal level, the volume fraction of CH4 is lower than 5%, and the temperature is always below 25 ℃. Finally, the goaf fire area in 1413 workingface is extinguished completely, and the normal and safe production of Zhongxing Coal Mine is guaranteed. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
Chinese |
| تدمد: |
1003-496X |
| Relation: |
https://www.mkaqzz.com/cn/article/id/7702; https://doaj.org/toc/1003-496X |
| DOI: |
10.13347/j.cnki.mkaq.2021.11.013 |
| URL الوصول: |
https://doaj.org/article/ff08f101c2cd4de78ab3300914276eaa |
| رقم الانضمام: |
edsdoj.ff08f101c2cd4de78ab3300914276eaa |
| قاعدة البيانات: |
Directory of Open Access Journals |