摘要
针对综放孤岛工作面采空区漏风引起浮煤自燃的问题,以天池矿102综放孤岛工作面的应用为例,采用热重实验和热解动力学分析法进行FR-1阻化泡沫防灭火技术研究。对102工作面的煤样在阻化前后进行热重实验,通过热解动力学分析发现,阻化后进、回风巷煤样失水阶段的活化能分别增加了1.63倍和3.21倍;氧化增重阶段活化能分别增加了1.53倍和1.43倍,燃烧阶段活化能降低。现场应用发现,FR-1阻化泡沫具有良好的渗透性和堆积性,采空区的CO浓度不断下降并最终降到0ppm。研究结果表明,FR-1阻化泡沫能有效提高煤的失水活化能,具有良好的阻燃作用,能有效防止综放孤岛工作面的采空区自燃。
Aiming at the spontaneous combustion problem of fully mechanized caving island coal face caused by leaking air in goaf.Research on fire prevention and extinguishment technology was conducted by thermogravimetric experiments and pyrolysis kinetics analysis method.Combining with field application in practical,taking fully mechanized caving 102 island coal face as an example,thermogravimetric experiments were made on coal samples of 102 working face before and after being inhibited by FR-1 inhibition foam,after pyrolysis kinetics analysis,some conclusions could be found as follows： Activation energy of evaporation stage in intake airflow roadway after inhibiting was 1.63 times as large as that before inhibiting,and activation energy of evaporation stage in return airflow roadway after inhibiting was 3.21 times as large as that before inhibiting,activation energy of coal spontaneous combustion calefactive-weight incremental oxidation phase in intake airflow roadway after inhibiting was 1.53 times larger than that before inhibiting,and activation energy of coal spontaneous combustion calefactive-weight incremental oxidation phase in return airflow roadway after inhibiting was 1.43 times larger than that before inhibiting.On the contrary,activation energy of coal combustion stage decreased.Some conclusions could be conducted after FR-1 inhibition foam was applied to practice as follows： FR-1 inhibition foam was greatly characterized by permeability and stack.CO concentration gradually decreased and kept 0ppm at last.The study showed that the FR-1 inhibition foam was able to raise activation energy of evaporation effectively,and it played an important role in prevent combustion in order to prevent the spontaneous combustion in goaf,fully mechanized caving island coal face.
出处
《资源开发与市场》
CAS
CSSCI
2015年第4期390-393,共4页
Resource Development & Market
基金
国家自然科学基金项目"深井开采原岩内部及其与风流的固-液-气三相耦合传热换湿热害形成机理研究"(编号:51274115)
国家自然科学基金项目"煤炭自燃防治理论及方法"(编号:51274113)
辽宁省教育厅基金项目"褐煤常温下快速氧化微观机理研究"(编号:L2012122)
关键词
综放孤岛工作面
采空区漏风
FR-1阻化泡沫
阻化效果
fully mechanized caving island coal face
air leakage in goaf
FR-1 retarding foam
inhibiting effect
