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元堡煤矿1901综放面初采期采空区一氧化碳超限原因分析及防火措施 被引量:10

Analysis on CO over limit in goaf of No.1901 fully mechanized caving face during initial mining period in Yuanbao Coal Mine and its fire prevention measures
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摘要 分析了元堡煤矿初采期采空区CO超限原因,并提出了降低采空区漏风风量、注氮气稀释采空区O2浓度、加快回采等措施。通过多种措施的实施与效果分析,结果表明:通过降低采空区漏风风量的措施能够起到一定的防火作用,但效果不好,鉴于元堡煤矿推进速度难以再提高的现状,采用注氮防火是有效的。 The causes for CO over limit in the goaf during the initial mining period in Yuanbao coal mine were analyzed and the corresponding measures were proposed to decrease air-leakage in the goaf,dilute the O2 concentration in the goaf and speed up mining.The results showed that the only measure of decreasing air-leakage in the goaf could prevent the fire to a certain extent,but the effect was not satisfied.In view of no possibility of speeding up mining in Yuanbao coal mine,the nitrogen injection was effective for the fire prevention and extinguishment.
出处 《中国煤炭》 北大核心 2011年第10期99-101,共3页 China Coal
基金 国家自然科学基金重点项目(50834005) 国际科技合作攻关项目(2008DFB70100)
关键词 初采期 一氧化碳超限 综放工作面 煤炭自燃 注氮防灭火 initial mining period CO over limit fully mechanized caving face coal spontaneous combustion fire prevention and extinguishment by nitrogen injection
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