针对自燃的矸石山散发出有害气体污染环境,还有可能发生爆炸的问题,对自燃严重的西曲煤矿矸石山进行综合灭火,以达到净化坏境、消除危险的目的。采用红外测温、多参数气体检测和钻孔测温相结合的综合探测技术,确定火区分布于矸石山的东侧,面积为650 m2,进而合理布置注浆钻孔,确定注浆参数,选用电厂粉煤灰与新型防灭火材料对火区进行注浆灭火。治理结果表明:矸石山的CO体积分数从840×10-6降至12×10-6,H2S体积分数从89×10-6降至趋近于0,SO2体积分数为0,矸石山表面温度与当地气温相同,内部温度从最高420℃降至80℃以下,达到了《煤矿矸石山灾害防范与治理规范》要求。

According to the proldem that the spontaneous combusted coal rejects dump would send out the harmful gas to pollute environment and could have expl osion dangers, thus a comprehensive fire distinguishing was conducted to the serious spontaneous combusted coal rejects dump in Xiqu Mine in order to purify the envi ronment and eliminate the danger purposes.The comprehensive detection technology with the infrared temperature measurement, multi parameters gas detection and b orehole temperature measurement was applied to determine the fire distribution at the east side of the coal rejects dump with an area of 650 m2.An rational layout of gr outing boreholes, grouting parameters determined, fly ash from coal-fired power plant and the new fire prevention and control material was applied to the fire extinguish ing with grouting.The fire prevention and control results showed that the CO volume fraction in the coal rejects dump was reduced from 840x10-6to 12x10-6, the H2S v olume fraction was reduced from 89x 10-6closed to 0 and the sO2volume fraction was 0.The surface temperature of the coal rejects dump and the local temperature wa s the same and the internal temperature was reduced from 420 °C below to 80 °C.Those results could meet the requirements stipulated in Disaster Prevention and Contr ol Standard of Coal Rejects Dump in mine.

国家自然科学基金煤炭联合基金资助项目(51174272)；中国煤炭科工集团科技创新基金资助项目(2012MS001)；