煤矿瓦斯爆炸事故中矿车激励效应的数值模拟

基金项目:

国家重点基础研究发展计划(973计划)项目(2002CB412707)

Anumericalsimulationofstimulatingeffectoftramcars duringthemethaneexplosionpropagation

1.
SchoolofSafetyEngineering,NorthChinaInstituteof
2.
ScienceandTechnology,Beijing101601,China;
3.
SchoolofAerospaceEngineering,BeijingInstituteofTechnology,Beijing100081,China;

Funds:

NationalBasicResearchProgramofChina(973Program)(2002CB412707)

摘要: 基于矿井生产环境,构建了相应的物理模型、数学模型,进行了数值模拟。模拟过程中,考虑了化学反应,将爆炸热力学过程和基元反应耦合,采用TVD格式进行数值离散。结果揭示巷道中设置1~3辆矿车时,瓦斯爆炸冲击波及其火焰波的结构和参数变化特征。数值模拟与实验结果对比分析表明,单一矿车和多辆矿车在激励效应存在明显不同,矿车数量增加,激励效应更加显著。
- 爆炸力学 /
- 激励效应 /
- 耦合 /
- 瓦斯爆炸 /
- 矿车
Abstract: Tramcarsareusedastransportequipment,especiallyinthecentralareaofamine.Asobstaclesinthecloudofpre- mixedgas,theyproducestimulatingeffectduringthemethaneexplosionaccidentsincoalmining. Basedonconditionsofcoalminingprocess,asetofmodelsisbuiltforthenumericalsimulation. Thechemicalreactionmechanism,thermodynamicsofexplosionandelementary reactionaretakenintoconsiderationinthesimulation.TheTVDschemeisusedfornumericaldiscretization. Theresultshowsthechangesofshockwaveandfireflamebecauseoftheinfluenceof1to3 tramcars.Bycomparisonwithpreviousexperimentalresults,theconclusionisthatthestimulating effectwillbeenhancedwiththeincreaseofthenumberoftramcars.Theresultwillbehelpfulforthe gasexplosionprevention,emergencyresponseandrescue,andincidentinvestigationincoalmines.
- mechanicsofexplosion /
- stimulatingeffect /
- coupling /
- methaneexplosion /
- tramcars