【作者】 赵丹；

【导师】 刘剑； 郭立稳；

【作者基本信息】 辽宁工程技术大学 ， 安全技术及工程， 2011， 博士

【摘要】 利用当前的矿井通风安全监测监控系统,只能反映安设风速传感器的井巷风量发生了变化,至于变化是由该条巷道故障引起的,还是由于拓扑关系原因引起的,故障源是一点还是多点,即为通风系统故障源诊断问题。通风系统的故障从整个网络角度考虑,都可以归结为分支的风阻发生了变化。如果分析每一条分支风阻变化对通风系统的影响,即每一条分支都安设风速传感器是不可能的。因此井下风速传感器的布置最小数量及位置问题也是故障源诊断技术研究的重点。国内外关于故障诊断的问题研究较多,但大多数属于检测领域的设备故障诊断,对矿井通风系统的故障诊断研究较少。基于国家自然基金资助项目(60772159)《基于仿真技术的矿井通风系统智能诊断系统研究》,开展了本文的研究工作。在风速传感器的布置问题上,提出了人为指定优先级、灵敏度排序和角联结构的风速传感器布置方法。通过试验数据建立了风速传感器的测量值与平均风速之间的一元线性回归方程。提出了三种方法构建反映分支风量变化与相关分支风阻之间关系的通风网络故障巷道范围库,用以确定可能引起风速超限巷道的故障巷道范围,并对三种方法进行了比较分析。提出了一种宏观上风速传感器的布置方法——最少全覆盖布点法,又给出了分支覆盖度和影响巷道范围库的概念。对矿井通风系统的故障通过建立故障树的方法进行了分析,并归类处理。并对故障巷道范围库缩小的故障巷道范围进行了最终的故障源推理分析。对铁法大明矿进行了工业试验,验证了故障诊断技术及方法的可行性,并做了风速传感器布置方案,对矿井通风系统具有重要的指导意义。更多还原

【Abstract】 Using the current safety monitoring system, can only get the air amount of roadway placed transducer, as this change is caused by the failure of the section of roadway, or other roadway, fault source is one point or more, which are belong to the problem of ventilation system fault source diagnosis.Ventilation system fault can be attributed to the change of the branch drag from the entire network. If the changes of air drag for each branch on ventilation system are analyzed, that is impossible of placing air velocity transducers in every branch. So the problem of the minimum quantities and location for placing air velocity transducer should be mainly studied. The issure of fault diagnosis is more researched by domestic and international experts, but most of them belong to fault diagnosis of equipment, fault diagnosis of mine ventilation system is little researched. "Research for intelligent diagnosis system of mine ventilation system based on simulation" is based on the National Natural Foundation of China (60772159).The man-made priority, sensitivity ranking and method of placing air velocity transducer to diagonal structure are proposed for the issue of placing air velocity transducer. Unary linear regression equation between measured value of air velocity transducer and average air velocity is established by experimental data, and the effect has been evaluated. Three methods have been proposed to build fault roadway range library of ventilation network, which can reflect the change relationship between the air quantity of the branch and air drag of the relevant branches, which are used to determine fault roadway range causing air velocity exceed the limit. And these are compared and analyzed. One macro method of setting the air velocity transducer– minimum and full coverage of distribution method has been proposed, the concept of branch coverage degree and impact roadway range library have been given. The fault of mine ventilation system is analyzed through the method of establishing fault tree analysis, and classified processing. And the narrow fault roadway range has been finally carried on fault sources reasoning analysis. It has been done the industrial testing in Daming, the feasibility of fault diagnosis techniques and methods are been validated, and the program of setting air velocity transducer has been made, which has important significance to the mine ventilation system.更多还原