|本期目录/Table of Contents|

[1]裴蓓,李杰,余明高,等.CO2-超细水雾对瓦斯/煤尘爆炸抑制特性研究[J].中国安全生产科学技术,2018,14(8):54-60.[doi:10.11731/j.issn.1673-193x.2018.08.009]
 PEI Bei,LI Jie,YU Minggao,et al.Study on suppression characteristics of gas/coal dust explosion by CO2 and ultra-fine water mist[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(8):54-60.[doi:10.11731/j.issn.1673-193x.2018.08.009]
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CO2-超细水雾对瓦斯/煤尘爆炸抑制特性研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
14
期数:
2018年8期
页码:
54-60
栏目:
学术论著
出版日期:
2018-08-31

文章信息/Info

Title:
Study on suppression characteristics of gas/coal dust explosion by CO2 and ultra-fine water mist
文章编号:
1673-193X(2018)-08-0054-07
作者:
裴蓓1李杰1余明高2韦双明1杨双杰1温小萍1
(1.河南理工大学 煤炭安全生产河南省协同创新中心,河南 焦作 454003;2.重庆大学 煤矿灾害动力学与控制国家重点实验室,重庆 400044)
Author(s):
PEI Bei1 LI Jie1 YU Minggao2 WEI Shuangming1 YANG Shuangjie1 WEN Xiaoping1
(1. Coal Production Safety Collaborative Innovation Center in Henan Province, Henan Polytechnic University, Jiaozuo Henan 454003, China;2. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China)
关键词:
瓦斯/煤尘复合体系爆炸抑制气液两相抑爆二氧化碳超细水雾
Keywords:
gas/coal dust composite system explosion suppression gas-liquid two-phase explosion suppression CO2 ultra-fine water mist
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2018.08.009
文献标志码:
A
摘要:
为了解CO2-超细水雾对瓦斯/煤尘爆炸抑制特性,用自行搭建的实验系统,从超压、火焰传播速度和火焰结构3个方面研究了CO2-超细水雾形成的气液两相介质对9.5%瓦斯/煤尘复合体系爆炸的抑爆效果、影响因素与原因。研究结果表明:随着CO2体积分数和超细水雾质量浓度的增加,爆炸火焰最大传播速度、爆炸超压峰值均出现明显下降,火焰到达泄爆口时间显著延迟;尤其当CO2体积分数达到14%与超细水雾的共同抑爆效果凸显,瓦斯/煤尘复合体系爆炸超压的“震荡平台”消失,同时火焰结构呈现“整体孔隙化”。所得结论为煤矿井下高效防爆抑爆技术进行了完善和增强。
Abstract:
To understand the suppression characteristics of gas/coal dust explosion by CO2 and ultra-fine water mist, the effect, influencing factors and reasons of explosion suppression for 9.5% gas/coal dust composite system explosion by the gas-liquid two-phase medium of CO2 and ultra-fine water mist were studied from three aspects including the overpressure, flame propagation velocity and flame structure by using the self-built experimental system. The results showed that with the increase of the volume fraction of CO2 and the mass concentration of ultra-fine water mist, both the maximum flame propagation velocity and the peak explosion overpressure decreased significantly, and the time of the flame arriving at the explosion vent delayed obviously. Especially when the volume fraction of CO2 reached 14%, the synergistic explosion suppression effect of CO2 and ultra-fine water mist was significant, the “shock platform” of overpressure of the gas/coal dust composite system explosion disappeared, meanwhile, the flame structure showed the characteristic of “overall porous”. The results improve and strengthen the underground effective explosion prevention and suppression technologies in coal mine.

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备注/Memo

备注/Memo:
国家自然科学基金项目(51604095,51574111,51774059,51774115);中国博士后科学基金项目(2018M630818)
更新日期/Last Update: 2018-09-03