综合勘查技术在大黄山煤矿火区调查中的应用

Application of Comprehensive Exploration Technology in Fire Area Investigation of Dahuangshan Coal Mine

大黄山煤矿火区属古火区之一,裸露的煤层自燃后沿小窑往深部延伸,形成了狭长状的燃烧带,整个矿区有多个燃烧区分布。随着火情的发展,工作人员在井下发现了3处CO浓度异常区域,与地表火区在位置上有一定的对应关系,推断地表火区已出现了向深部蔓延的趋势,矿井安全受到了巨大威胁。因此,查明矿区内所有火区的分布范围、燃烧深度及燃烧程度等火区要素就尤为必要。通过采用地面调查、红外线测温法、瞬变电磁法、同位素测氡法、钻探验证综合勘查技术,结合地质资料进行综合解释分析,共圈定7块煤层燃烧区,为下一步的火区综合治理工作提供可靠依据。

Dahuangshan coal mine fire area is one of the ancient fire areas.The exposed coal seam extends deep along the small kiln after spontaneous combustion,forming a long and narrow combustion zone.The whole mining area has multiple combustion zones.With the development of the fire,the staff found 3 abnormal CO concentration areas in the underground,which corresponded to the location of the surface fire area to a certain extent.It was inferred that the surface fire area had a tendency to spread to the deep,and the mine safety was greatly threatened.Therefore,it is necessary to find out the distribution range,burning depth and burning degree of all fire areas in the mining area.By applying the comprehensive exploration technology of ground survey,infrared temperature measurement method,transient electromagnetic method,isotopic radon measurement method and drilling verification,combined with geological data for comprehensive interpretation and analysis,a total of 7 coal seam combustion areas were delineated,providing reliable basis for the next comprehensive control of fire areas.