运输巷火灾烟流引流系统设计  

Design of fire smoke drainage system in transportation roadway

作　　者：朱令起 刘可忻[1] 周艺婷 ZHU Lingqi;LIU Kexin;ZHOU Yiting(College of Mining Engineering.North China University of Science and Technology,Tangshan 063210,China;Hebei Provincial Key Laboratory of Mining Development and Safety Technology,Tangshan 063210,China)

机构地区：[1]华北理工大学矿业工程学院,河北唐山063210 [2]河北省矿业开发与安全技术重点实验室,河北唐山063210

出　　处：《煤矿安全》2021年第10期125-129,共5页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51474086)。

摘　　要：为保证火灾时有毒有害气体能被有效引流至回风巷,通过采用数值模拟的方法,运用Pyrosim模拟软件建立运输巷实际尺寸模型,对发生火灾时巷道内有毒有害气体蔓延情况进行模拟分析。结果表明:CO在向下风侧扩散时,多在高度3.1~3.3 m处首先检测到CO;基于这一特点,将引流系统中控制传感器置于运输巷高约3.3 m处,拱顶下方15 cm检测效果最佳。引流系统设计了传感器控制核心策略,采用了回风引巷中安装PLC控制装置,利用双CO、双烟雾传感器实现控制铝合金制卷帘风窗进行风流自动调控;为保证火灾烟流完全被引流,设置了双向风速传感器辅助控制,并通过风窗远程监控系统,实现了井上工作人员进行实时监测和控制。通过现场应用,达到了良好的引流效果。In order to ensure the toxic or harmful gases can be effective drainage to return air lane, this paper adopts the method of numerical simulation and uses Pyrosim simulation software to establish the actual size model of the transportation roadway, and to simulate and analyze the spread of toxic and harmful gases in the roadway when a fire occurred. The results show that when CO diffused to the leeward side, it was first detected at the height of 3.1-3.3 m. Based on this characteristic, the control sensor in the drainage system was placed at the height of the transportation lane about 3.3 m, and the detection effect was the best when the sensor was 15 cm below the vault. The core strategy of sensor control is designed for the drainage system. The PLC control device is installed in the return air diversion lane. The double CO and double smoke sensors are used to control the aluminum alloy rolling shutter air window for air flow automatic regulation. In order to ensure that the fire smoke flow is completely drained, a two-way wind speed sensor is set to assist the control, and the remote monitoring system through the wind window is used to realize the real-time monitoring and control of the workers on the shaft. Through field application, a good drainage effect has been achieved.

关 键 词：矿井火灾 火灾烟流引流系统 CO分布 PLC 数值模拟 

分 类 号：TD752.3[矿业工程—矿井通风与安全]