陕西煤炭

煤炭资源的大规模开采，促使储煤场需求量增大，导致已开采煤炭储存过程中常伴有自燃现象，对煤炭资源造成极大的浪费和危害。基于神渭煤炭管道运输公司储煤场自然发火为研究背景，采用理论分析和室内实验检测的方法研究储煤场自然发火规律，并根据以往研究和现场实际工况提出了自燃监测预警技术。研究表明，储煤场自然发火存在内因和外因2种因素，受到其自身属性和外界设备等的双重影响。根据对实验试管及控温、耗氧速度等理论分析得到了自然发火速度、CO浓度计算关系式；根据实验室检测得到煤样CO浓度与温度、煤样耗氧速度与温度关系；基于实验测定和自然发火周期计算式，得到储煤场压滤煤样和离心煤样最短自然发火期分别为26 d和29 d左右，并针对上述分析提出了具有针对性监测预警的技术。

The large-scale mining of coal resources has led to an increase in the demand for coal storage yards, resulting in spontaneous combustion during the storage of mined coal, which has caused great waste and harm to coal resources.Based on the research background of spontaneous combustion in coal storage yard of Shenwei Pipe Transportation Company, this paper studies the law of spontaneous combustion in coal storage yard by theoretical analysis and indoor experimental detection, and puts forward the monitoring and early warning technology of spontaneous combustion according to previous research and actual working conditions on site.The research shows that there are two factors such as internal and external factors in the spontaneous combustion of coal storage yard, which are affected by its own attributes and external equipment.According to the theoretical analysis of the experimental tube, temperature control and oxygen consumption rate, the calculation formula of spontaneous combustion rate and CO concentration is obtained.According to the relationship between CO concentration and temperature of coal samples and the relationship between oxygen consumption rate and temperature of coal samples obtained by laboratory testing, based on experimental determination and spontaneous combustion cycle calculation formula, the shortest spontaneous combustion period of pressure filtered coal samples and centrifugal coal samples in coal storage yard is about 26 d and 29 d, respectively, and targeted monitoring and early warning technology is proposed.