基于层次分析法和集对理论的硫化矿自燃倾向性评定  

Safety Assessment of the Spontaneous Combustion Tendency of Sulfide Ores Based on AHP and SPA

作　　者：李孜军[1] 汪发松[1] 马树宝[1] 

机构地区：[1]中南大学资源与安全工程学院,国家金属矿安全科学技术研究中心,长沙410083

出　　处：《科技导报》2009年第19期69-73,共5页Science & Technology Review

基　　金：“十一五”国家科技支撑计划项目(2006BAK04B03-02)

摘　　要：采用多因素综合鉴定法对某硫铁矿的9个矿样进行了实验室自燃倾向性鉴定,得到了矿样的化学成分分析结果,矿相分析结果,矿样中水溶性铁离子、硫酸根离子含量随氧化时间的变化规律结果,自热性指标、自燃性指标。建立了硫化矿自燃倾向性判定流程的结构图,根据确定的硫化矿石倾向性分级标准,利用AHP方法和集对分析理论确定了该矿9个矿样的同一度和对立度,并进一步分析评价了指标数值与自燃倾向性分级标准之间的数量关系,得到了9个矿样的平均联系度;根据联系度的同异反态势确定联系度所属的集对态势,最后根据集对态势得到了9个矿样的氧化程度及自燃倾向性程度分级,得到了定量化的安全评价结果。该研究方法对硫化矿石自燃的安全评价具有指导意义。The prevention and the control of the spontaneous combustion of sulfide ores are always a major safety issue for sulfide ore deposits. It is very important to exactly measure the spontaneous combustion tendency of sulfide ores, in order to ensure the safety of miners＂ life, maintain the normal production of the mine and make good utilization of the natural resources. The spontaneous combustion tendency of the ore samples were identified by a multi- factor method. The chemical composition analysis, mineral analysis, and mineral sampling of water-soluble iron ions were carried out to obtain the sulfate ion content against oxidation time, self-heating index, indicators of spontaneous combustion. A structural chart of spontaneous combustion tendency of the sulfide ores is established. The grades based on the tendency factors of the sulfide ores are identified by AHP. The oxidation indicator, indicator of self-heating and spontaneous combustion indicator based on calculations are selected to determine the spontaneous combustion tendency of the sulfide ores. The relationship between the spontaneous combustion tendency of indicator values and the number of classification standards are further analyzed and evaluated. Finally, the degree of oxidation and the classification are obtained according to the set pair trend of the samples, the quantitative results of the safety assessment are also obtained. The experiments show that No. 8, No. 3 ore bodies have a tendency of the spontaneous combustion. Those results are in line with the mine site＇s actual assessment. The results provide a theoretical basis for adopting measures against spontaneous combustion of sulfide ores.

关 键 词：硫化矿 自燃 自燃倾向性 层析分析法 集对理论 安全评价 

分 类 号：TD752.2[矿业工程—矿井通风与安全]