基于风网平衡技术的气体积聚危险性分析
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摘要
矿井通风是煤矿安全生产的基础,合理通风是抑制煤自燃和瓦斯积聚的有效方式,但不良通风却是导致瓦斯积聚、煤自燃以及灾害加剧的重要因素。通过对煤自燃和瓦斯灾害与通风之间的关系分析,确定通风不良性指标为风量、瓦斯浓度与CO浓度,并拟合得出了CO浓度和漏风量的函数关系。将通风不良性的指标进行分级,运用模糊综合评价法建立了通风不良性危险性评价体系,该体系根据危险程度的不同将危险程度划分为Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ个等级,危险性随着等级的增高而增加。运用风网平衡图来分析通风不良性,对于煤矿通风灾害的评定与治理具有指导意义。
Mine ventilation is the foundation of safety production in coal mine,and reasonable ventilation is an effective way to restrain coal spontaneous combustion and methane accumulation. By analyzing the relationship between coal spontaneous combustion and gas disasters with ventilation,the poor ventilation indicators were determined as air volume,gas concentration and CO concentration,and the function relationship between CO concentration and air leakage was fitted. By using fuzzy comprehensive evaluation method,the risk degree was divided into five grades,and the risk evaluation system of poor ventilation was established. Using the ventilation network balance chart to analyze the ventilation system has guiding significance for the evaluation and treatment of ventilation disasters in coal mines.
Mine ventilation is the foundation of safety production in coal mine,and reasonable ventilation is an effective way to restrain coal spontaneous combustion and methane accumulation. By analyzing the relationship between coal spontaneous combustion and gas disasters with ventilation,the poor ventilation indicators were determined as air volume,gas concentration and CO concentration,and the function relationship between CO concentration and air leakage was fitted. By using fuzzy comprehensive evaluation method,the risk degree was divided into five grades,and the risk evaluation system of poor ventilation was established. Using the ventilation network balance chart to analyze the ventilation system has guiding significance for the evaluation and treatment of ventilation disasters in coal mines.
引文
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[8]李岐,刘剑.层次性通风网络平衡图的自动生成[J].中国安全科学学报,2004,14(8):25-27.
[2]周西华.双高矿井采场自燃与爆炸特性及防治技术研究[D].阜新:辽宁工程技术大学,2006.
[3]郭玉森.采空区漏风规律的研究[J].煤矿开采,2001,3(1):66-67.
[4]邢玉忠,郭勇义,吴世跃.采空区紊流漏风相关系数的研究[J].煤炭学报,2001,26(5):525-528.
[5]郝圣艾,张作华,赵红梅,等.矿井采空区漏风的定量检测[J].华北科技学院学报,2007,4(2):5-7.
[6]常绪华.采空区煤自燃诱发瓦斯燃烧(爆炸)规律及防治研究[D].徐州:中国矿业大学,2013.
[7]魏引尚.基于概率统计的通风巷道瓦斯积聚危险性分析研究[D].西安:西安科技大学,2004.
[8]李岐,刘剑.层次性通风网络平衡图的自动生成[J].中国安全科学学报,2004,14(8):25-27.