Research on regional linkage and intelligent control system of mine fire wind-smoke flow
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摘要: 针对矿井通风异常情况下应急决策与智能调控水平不高、无法实现风烟流远程控制的现状，设计了矿井火灾风烟流区域联动与智能调控系统；结合通风网络结构，分析了火灾时期风烟流区域联动控制机理，即通过设置烟雾传感器、可调风门等通风设施及远程调控，实现火灾时期烟流区和非烟流区2个并联分支的风量按需分配；研究了矿井火灾风烟流智能调控的影响因素，通过分析矿井火灾前后通风网络结构，构建了火灾风烟流智能调控模型，并介绍了可视化功能实现算法。该系统根据火灾时期火区风阻、通风网络结构、主要通风机运行参数等得出各分支实时风量，通过模拟火灾过程计算关键巷道理想风量并设置阈值，当实际风量与阈值误差超过10%时远程调控风门开度，以实现最佳风量分配。应用结果表明，系统对巷道风量的模拟计算结果、可视化界面显示结果与现场测定结果具有很好的耦合性。Abstract: For existing status of low emergency decision-making and intelligent control level and inability to remotely control wind-smoke flow under abnormal conditions of mine ventilation, a regional linkage and intelligent control system of mine fire wind-smoke flow was designed. Combining with ventilation network structure, regional linkage control mechanism of wind-smoke flow during fire period was analyzed, which realized wind volume distribution according to needs of two parallel branches of smoke flowing zone and non-smoke flowing zone during fire period through setting smoke sensor, adjustable air doors and other ventilation equipments and remote control. Influence factors on intelligent control of mine fire wind-smoke flow were researched. An intelligent control model of wind-smoke flow during fire period was built through analyzing ventilation network structure before and after mine fire, and realization algorithm of visual function was also introduced. The system obtains real-time wind volume of each branch according to wind resistance, ventilation network structure and operation parameters of main ventilator during fire period, calculates ideal wind volume of key roadways through simulating fire process and sets a threshold value. When error between actual wind volume and the threshold value exceeds 10%, open degree of air door is controlled remotely, so as to realize optimal wind distribution. The application result shows that there is a perfect coupling among simulated calculation result of the system, displaying result on visual interface and field test result of wind volume in roadway.
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Keywords:
- mine fire /
- mine ventilation /
- emergency rescue /
- fire wind-smoke flow /
- regional linkage /
- wind adjustment /
- visual control
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期刊类型引用(16)
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