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[1]赵兴国,戴广龙.氧化煤自燃特性实验研究[J].中国安全生产科学技术,2020,16(6):55-60.[doi:10.11731/j.issn.1673-193x.2020.06.009]
　ZHAO Xingguo,DAI Guanglong.Experimental study on spontaneous combustion characteristics of oxidized coal[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(6):55-60.[doi:10.11731/j.issn.1673-193x.2020.06.009]
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氧化煤自燃特性实验研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年6期
页码:
55-60
栏目:
职业安全卫生管理与技术
出版日期:
2020-06-30

文章信息/Info

Title:
Experimental study on spontaneous combustion characteristics of oxidized coal
文章编号:
1673-193X(2020)-06-0055-06
作者:
赵兴国; 戴广龙
（1.安徽理工大学 能源与安全学院，安徽 淮南 232001；
2.安徽理工大学 煤矿安全高效开采省部共建教育部重点实验室，安徽 淮南 232001）
Author(s):
ZHAO Xingguo;  DAI Guanglong
(1.School of Energy Resources and Safety,Anhui University of Science and Technology,Huainan Anhui 232001,China;
2.Key Laboratory of Coal Mine Safety and High Efficient Mining Jointly Built by Province and the Ministry of Education,Anhui University of Science and Technology,Huainan Anhui 232001,China)
关键词:
氧化煤; 煤自燃; 自燃特性指标气体; 灰色关联
Keywords:
oxidized coal;  coal spontaneous combustion;  index gases of spontaneous combustion characteristics;  grey correlation
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2020.06.009
文献标志码:
A
摘要:
为解决大柳塔煤矿活鸡兔井12下208综放工作面采空区存在大量氧化煤的遗煤自燃预测问题，对原煤及不同程度的氧化煤进行程序升温实验，分析研究低温氧化特性的变化规律，根据灰色理论对自燃标志气体进行优选。结果表明：原煤与氧化煤的临界温度与干裂温度相差不明显，分别在40~50 ℃与110~120 ℃之间；根据临界温度、干裂温度及其指数增长点将煤低温氧化过程分为缓慢自热（50~＜90 ℃）、加速自热（90~＜120 ℃）、热解裂变（120~＜160 ℃）和热解加速（160~＜200 ℃）4个阶段。在缓慢自热阶段以G2（0.01~＜0.039）和R1（0.001 5~＜0.007 7）为指标；在加速自热阶段以R1（0.007 7~＜0.019 5）和G3(0.000 9～＜0.003 7)为指标；在热解裂变阶段以烯烷比（0~＜0.484）和G3（0.003 7~＜0.037 4）为指标；在热解加速阶段以R1（0.046 8~＜0.072 6）和烯烷比（0.484~＜0.992）为指标气体。实验结果对采空区遗煤的自燃防治具有一定的指导作用。
Abstract:
In order to solve the problem of predicting the spontaneous combustion of residual coal for a large amount of oxidized coal existing in the goaf at 12 underground 208 fully mechanized caving face of Huojitu well in Daliuta coal mine,the temperature programmed experiments were carried out on the raw coal and the oxidized coal with different degrees.The change laws of lowtemperature oxidation characteristics were analyzed,and the index gases of spontaneous combustion were optimally selected according to the grey theory.The results showed that the critical temperatures and dry cracking temperatures of raw coal and oxidized coal were not significantly different from each other,which was between 40~50 ℃ and 110~120 ℃,respectively.According to the critical temperature,dry cracking temperature and its exponential growth point,the lowtemperature oxidation process of coal was divided into four stages,namely the slow selfheating （50~＜90 ℃）,accelerated selfheating （90~＜120 ℃）,pyrolytic fission （120~＜160 ℃） and pyrolysis acceleration （160~＜200 ℃）.In the slow selfheating stage,G2（0.01~＜0.039） and R1（0.001 5~＜0.007 7） were used as the indexes.In the accelerated selfheating stage,R1（0.007 7~＜0.019 5） and Ｇ３（０．０００ ９～＜０．００３ ７） were used as the indexes.In the pyrolysis fission stage,the ratio of alkenes to alkanes （0~＜0.484） and G3（0.003 7~＜0.037 4） were used as the indexes.In the accelerated selfheating stage,R1（0.046 8~＜0.072 6） and the ratio of alkenes to alkanes （0.484~＜0.992） were used as the indexes.The experimental results have a certain guiding role for the prevention and control on spontaneous combustion of residual coal in the goaf.

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备注/Memo

备注/Memo:
收稿日期： 2020-02-18
* 基金项目： 国家自然科学基金项目（51574009）
作者简介： 赵兴国，硕士研究生，主要研究方向为火灾防治理论与技术。
通信作者： 戴广龙，博士，教授，主要研究方向为火灾防治理论与技术。
更新日期/Last Update: 2020-07-07