煤炭工程 ›› 2014, Vol. 46 ›› Issue (2): 52-54.doi: 10.11799/ce201402018

• 生产技术 • 上一篇    下一篇

补连塔煤矿上覆采空区大面积火区综合治理技术研究

张辛亥,李昊   

  1. 西安科技大学
  • 收稿日期:2013-05-08 修回日期:2013-07-13 出版日期:2014-02-14 发布日期:2014-02-18
  • 通讯作者: 李昊 E-mail:290454281@qq.com

Comprehensive governing of large area of the fire in overlying goaf of Bulianta coal mine

  • Received:2013-05-08 Revised:2013-07-13 Online:2014-02-14 Published:2014-02-18

摘要:

补连塔煤矿三盘区2-2煤层22305工作面回采放顶时,上覆1-2煤层12306采空区内浮煤发生自燃,导致了22305工作面CO超限,工作面停产。在进行火区状况分析后,采用多种方法进行火区治理,但由于采空区漏风严重、火区面积大、火区发展速度快,前期并未收到明显成效。后期针对火区特点对22305工作面进行封闭并采取从地面向上覆采空区灌注液态氮气和液态二氧化碳的措施对火区进行治理,并取得良好效果,有效控制了22305工作面上覆采空区高温区域,使得22305工作面启封后安全回采。

关键词: 大面积火区, 上覆采空区, 防灭火, 液态氮气, 液态二氧化碳

Abstract:

When stope caving in working face 22305 of coal seam 2-2, the floating coal in goaf 12306 of overlying 1-2 coal seam got spontaneous combustion, resulting in overrunning of the concentration of CO gas at face 22305 in Bulianta coal mine. With the analysis of the fire area situation, a variety of methods were used for fire regional governing. However, the effects of former ways are not obvious because of the large area of fire, the serious leakage of goaf air and the fast growth of the fire zone et.al. According to the characteristics of the situation, the working face 22305 was closed later and comprehensive measures of filling liquid nitrogen and liquid carbon dioxide from the ground into under goaf were taken. It achieved good results and the high-temperature region of the face 22305 in overlying goaf were effectively controlled, which make the face safe mining after unsealing face 22305.

Key words: Large area of the fire, Overlying goaf, Fire prevention and control, Liquid inert gas, Liquid carbon dioxide