摘要
采煤工作面采空区依据漏风状况划分为冷却带、自燃发火带和窒息带,对其现场测定可以确定工作面采空区自燃发火的范围。在该范围内注氮防灭火,必须保证注氮纯度和注氮量,提高注氮连续性和检测技术的可靠性,同时采取必要的减少采空区漏风的措施是注氮防灭火成功与否的关键。
According to air leakage degree, goaf in working face is divided into cooling zone, suffocation zone and spontaneous fire zone. Two steps determine the spontaneous fire zone: 1. Max value of oxygen concentration (or max velocity of air leakage) in goaf is determined in laboratory when spontaneous fire is extinguished in the goaf; 2,Remote spontaneous fire monitor (or SF6 Showing Trace technology) measures distance between this site where the max value was determined and working face. The key technology of preventing and extinguishing spontaneous fire in coal mining at present is quality quantity of nitrogen injection , continuous of nitrogen injection , dependence of monitor system, and suitable action for reducing air leakage in goaf.
出处
《华北科技学院学报》
2003年第3期9-11,共3页
Journal of North China Institute of Science and Technology
关键词
采空区
自燃带
监测
漏风
goaf
spontaneous fire zone
monitor
air leakage
