基于共因失效计算模型的支架液压系统可靠性分析  

Analysis of System Reliability of Hydraulic Supports Based on Common Cause Failure Calculation Model

作　　者：何富连[1,2] 殷帅峰[1] 李通达[1] 王欢[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]中国矿业大学煤炭资源与安全开采国家重点实验室,北京100083

出　　处：《煤矿安全》2013年第11期64-67,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51234005);国家重点基础研究发展计划(973计划)资助项目(2010CB226802);煤炭资源与安全开采国家重点实验室自主研究课题资助项目(SKLCRSM10B08);中央高校基本科研业务费专项资金资助项目(2010YZ02)

摘　　要：基于同煤国电同忻煤矿8107综放工作面严重冒顶事故原因分析和防治对策,提出支架液压系统共因失效可靠性计算分析方法。结合液压元件条件失效概率的定义,运用统计学方法推导出共因失效离散化计算公式。公式推导过程及应用实践表明:支架液压系统失效概率取决于顶板载荷和液压元件性能各自贡献量。由于二者离散程度不同,在计算分析中,既应考虑二者的相关性,又应对二者区别对待;8107综放工作面单架支架立柱液压系统可靠度为99.6%,但对于有110架综放液压支架串联组成的系统,其整体可靠性较低。Based on the reason analysis and prevention countermeasures of critical top -caving accident at 8107 fully mechanized caving face in Tongxin Coal Mine, common cause failure reliability calculation analysis method of hydraulic support system was proposed. Combined with the definition of hydraulic component condition failure probability, common cause failure discrete formula was deduced by using statistical methods. Formula derivation and application practice showed that hydraulic system failure probability depended on the contribution of roof loads and hydraulic component performance. Since their discrete degrees were different, during the calculation analysis, it was necessary to consider the correlation and respond to discriminate between them. Hydraulic system reliability of single - frame support column was 99.6% in 8107 fully mechanized caving face, but the overall reliability was lower for the series connection system of No. 110 fully mechanized hydraulic supports.

关 键 词：共因失效 液压支架 系统可靠性 失效相关性 

分 类 号：TD355.4[矿业工程—矿井建设]