采矿与安全工程学报2013，Vol.30Issue(1)：154-158,5.
采空区注二氧化碳防灭火的数值模拟研究
Numerical simulation on fire prevention by infusing carbon dioxide into goaf
摘要
Abstract
To investigate the flow rules of carbon dioxide during the process of infusing carbon dioxide into the goaf, three-dimensional geometric model of goaf were established, and through numerical simulation, the flow characteristics of carbon dioxide in the goaf were further studied. The results show that the air leakage in the working face can be reduced by infusing inert gas into goaf, and the carbon dioxide can reduce more air leakage into goaf than that of nitrogen when the same amount of carbon or nitrogen has been infused into goaf. Meanwhile, the carbon dioxide infusion can lower the oxygen volume fraction in the entire goaf, while oxygen volume fraction in the goaf lowers strikingly only when nitrogen is infused into the goaf for deep distance. Thus, infusing carbon dioxide into goaf can reduce the air leakage into goaf, and lower oxygen volume fraction in goaf more effectively, that is, infusing carbon dioxide into goaf can produce much better effects of fire prevention than that of nitrogen.关键词
采空区/防灭火/二氧化碳/氮气/数值模拟Key words
goaf/ fire prevention/ carbon dioxide/ nitrogen/ numerical simulation分类
矿业与冶金引用本文复制引用
邵昊,蒋曙光,吴征艳,张卫清,王凯..采空区注二氧化碳防灭火的数值模拟研究[J].采矿与安全工程学报,2013,30(1):154-158,5.基金项目
河南省瓦斯地质与瓦斯治理重点实验室—省部共建国家重点实验室培育基地开放基金项目(WS2012A04) （WS2012A04）
煤炭资源与安全开采国家重点实验室自主研究课题项目(SKLCRSM09X04) （SKLCRSM09X04）
国家煤炭联合基金重点项目(51134023) （51134023）
中国矿业大学基本科研业务费科技项目(2011RC08) （2011RC08）
