煤炭资源开采过程中，常采用胶带运输系统实现煤炭高效运输。在运行过程中，胶带会与煤炭等摩擦蓄热，导致矿井胶带火灾发生。胶带火灾往往伴随着大量有毒有害气体和高温区域产生，造成人员伤亡和财产损失。为此，本文开展了缩尺寸胶带燃烧规律、烟气蔓延特性数值模拟、监测技术及方法、现场应用等研究，旨在进一步了解胶带火灾蔓延过程，为矿井胶带火灾的预警防控提供基础参数。
建立了缩尺寸试验台研究了胶带在不同风速条件下的燃烧特性，根据温度和胶带表观特征结合理论将燃烧划分为三个阶段；对不同风速条件下的燃烧数据进行了分析，确定了不同风速条件对胶带燃烧过程影响规律、高温区域分布规律、烟气逆退风速条件范围。
采用FDS软件进行数值模拟，构建了与实际胶带运输巷道尺寸1:1模型。结合缩尺寸实验结果探究了模型可行性，并对不同风速条件下胶带火灾温度场及烟气蔓延特性、监测点数据可靠性进行了分析。巷道顶部为温度及烟气聚集区域，适合监测设备布置；不同风速条件下，火灾监测监控点位置随风速增大而向下风向偏移。
对矿井胶带火灾的监测方法进行了研究，设计了适用于矿井的监测设备及技术。实现了胶带火灾温度及多组分气体监测；对传感器的数据精度进行了线性拟合修正，得到了符合不同浓度下的精度修正一次线性方程；对系统及修正精度进行了实验室可靠性研究，确定了系统最大有效距离为3 km，最大数据传输延迟为0.1 s，精度误差小于0.05%或0.5ppm。
在发耳煤矿313204运输巷道进行了监测方法研究，测试了监测方法的可行性、系统稳定性。确定了火灾危险区域和监测布点位置；结果表明系统可有效监测巷道内O2等多种气体的实时数据，实现地面对井下胶带运输巷道的实时动态监测。研究结果可为矿井胶带火灾监测技术及方法提供理论指导。

In the process of coal resource mining, it is necessary to use belt conveyors to realize the efficient transportation of coal. In the course of operation, there will be a variety of failures of the belt, leading to the occurrence of the mine belt fire. To this end, this paper has carried out research on the combustion law of shrinking tape, numerical simulation of smoke spreading characteristics, monitoring technology and methods. And based on the experimental results, applied research in mine tunnels. It aims to further understand the spreading process of belt fire and provide basic parameters for monitoring and control of belt fire in mines.
A scaled-down test bench was established to study the combustion characteristics of the tape under different wind speeds. According to the combination theory of temperature and the appearance characteristics of the tape, the combustion was divided into three stages; the combustion data under different wind speeds were analyzed and different the influence of wind speed conditions on the burning of the belt, the distribution of the maximum temperature point, and the range of the flue gas reverse wind speed conditions.
Using FDS simulation software, a 1:1 model with the actual belt transportation lane size was constructed. The feasibility of the model is explored based on the results of the shrinkage experiment, and the temperature field and smoke spread characteristics of the belt fire under different wind speed conditions and the reliability of the monitoring point data are analyzed. The top of the roadway is the temperature and smoke gathering area, which is suitable for the layout of monitoring equipment; the layout of fire monitoring points under different wind speed conditions shifts to the downward wind direction with the increase of wind speed.
The monitoring method of the mine belt fire is studied, and the monitoring equipment and technology suitable for the mine are designed. The tape fire temperature and multi-component gas monitoring are realized; the data accuracy of the sensor is corrected by linear fitting, and the linear equation of accuracy correction under different concentrations is obtained; the reliability of the system and the correction accuracy is studied in the laboratory. It is determined that the maximum effective distance of the system is 3 km, the maximum data transmission delay is 0.1 s, and the accuracy error is less than 0.05% or 0.5ppm.
The monitoring method was studied in the 313204-transportation lane of Faer Coal Mine, and the feasibility and system stability of the monitoring method were tested. The fire hazard area and the location of the monitoring points are determined; the results show that the system can effectively monitor the real-time data of O2 and other gases in the tunnel, and realize the real-time dynamic monitoring of the underground belt transportation tunnel on the ground. The research results can provide theoretical guidance for mine belt fire monitoring technology and methods.

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