摘要
煤矿井下监控系统测量的风速数据并不能用来判断故障源位置,只能反映风速传感器所在巷道的风量变化情况。引起井下风速变化的原因很多,如巷道冒落、巷道堵塞、巷道变形等,从整个通风网络角度考虑,都可以归结为分支的风阻发生变化。由于井下通风网络中任一分支风阻的变化都可能引起自身及其他相关分支风量变化。提出用逐步线性回归分析法,确定引起通风系统风速传感器报警的分支集合。建立了逐步线性回归分析的通风系统故障源诊断数学模型。通过具体实例给出了风速传感器安设在不同位置下,可能引起此分支风速超限的故障巷道集合的结果。分析了关联分支的风阻变化对角联分支的影响,从而确定选择那些对角联分支影响大且自身风量容易发生变化的巷道安设风速传感器。
It was held by the authors that the location of coal mine wind fault source could not be judged by the monitoring system measured air velocity data,and that the wind velocity was influenced by many events,such as roadway caving,roadway congestion,roadway deformation,which could lead to the changed wind resistance of branch from the whole ventilation network point of view.As a change in the wind drag of one of branches of mine ventilation network may cause a change in the wind quantities of its own and other relevant branches,a stepwise linear regression analysis method was worked out to determine the branch collection causing the ventilation systems air velocity transducer alarm,a ventilation system fault source diagnosis mathematical model of stepwise linear regression analysis was built.Fault roadway collection erection of caused possible this branch air velocity overrun is given in the case of different positions of wind velocity transducer placement through concrete examples.The influence of wind resistance change of the associated branch on diagonal branch was analyzed.Roadways affecting singnificantly diagonal branch and wind quatity of which proning to be changed were selected to install air velocity transducers.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2012年第11期88-92,共5页
China Safety Science Journal
基金
国家自然科学基金资助(51204088)
关键词
矿山安全
矿井通风
故障源诊断
角联结构
风速传感器
mine safety
mine ventilation
fault source diagnosis
corner-linked structure
wind velocity transducer
