惰性气体N<sub>2</sub>/CO<sub>2</sub>抑制瓦斯爆炸实验研究

张迎新; 吴强; 刘传海; 江丙友; 张保勇

doi:10.11883/1001-1455(2017)05-0906-07

惰性气体N₂/CO₂抑制瓦斯爆炸实验研究

doi: 10.11883/1001-1455(2017)05-0906-07

1.
黑龙江科技大学安全工程学院，黑龙江哈尔滨 150022
2.
安徽理工大学能源与安全学院，安徽淮南 232001

基金项目:

国家自然科学基金重点项目 51334005

国家自然科学基金项目 51274267

国家自然科学基金项目 51404102

国家自然科学基金项目 51404103

黑龙江科技大学国家级专业中心实验室开放课题项目 HKDGH-20140002

黑龙江科技大学国家级专业中心实验室开放课题项目 HKDGH-20140006

详细信息

作者简介:
张迎新(1978-)，男，副教授

通讯作者:
刘传海，liuchuanhai0429@126.com

中图分类号: O381;TD75
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- 被引次数: 0
出版历程
- 收稿日期: 2015-12-30
- 修回日期: 2016-07-08
- 刊出日期: 2017-09-25

Experimental study on coal mine gas explosion suppression with inert gas N₂/CO₂

1.
School of Safety Engineering, Heilongjiang University of Science and Technology, Harbin 150022, Heilongjiang, China
2.
School of Mining and Safety Engineering, Anhui University of Science and Technology, huainan 232001, Anhui, China

摘要

摘要: 为探究惰性气体(N₂和CO₂)对瓦斯气体爆炸影响，采用中型尺寸瓦斯爆炸实验装置，在N₂及CO₂体积分数为0%、9%、14%工况下开展了瓦斯爆炸实验研究，获取了N₂和CO₂对矿井瓦斯抑爆特性的影响规律，并针对瓦斯爆炸过程中惰性气体N₂和CO₂对爆炸超压变化的影响及爆炸抑制效果进行了对比分析。结果表明：随着初始混合气体中惰性气体N₂或CO₂含量的升高，瓦斯爆炸超压均明显降低，CO₂的抑爆效果优于N₂；N₂和CO₂对较高浓度瓦斯气的抑爆效果更为显著。
- 瓦斯爆炸 /
- 惰性气体 /
- 抑爆 /
- 爆炸超压
Abstract: To determine the effect of inert gas (N₂ and CO₂) on the process of mine gas explosion, we carried out mine gas explosion experiments in a medium-size pipe with the volume fractions of N₂ or CO₂ filled in three components of mine gas samples which were respectively 0%, 9% and 14%, and successfully obtained the explosion suppression characteristics of N₂ and CO₂. Then we conducted comparative analysis of the explosion overpressure histories and explosion suppression capacity of inert gas N₂ and CO₂ in the gas explosion process. The results show that the gas explosion overpressure decreases significantly with the increase of N₂ or CO₂ volume fraction in the mixed gases, and the explosion suppression capacity of CO₂ is better than that of N₂. Moreover, the explosion suppression effect of N₂ and CO₂ is much more obvious when the gas sample has a higher CH₄ concentration.
- gas explosion /
- inert gas /
- explosion suppression /
- explosion overpressure

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图 1 瓦斯爆炸实验系统

Figure 1. Experimental device of mine explosion

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图 2 N₂对瓦斯气样G1爆炸超压的影响

Figure 2. Influence of N₂ on explosion overpressure of mine gas G1

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图 3 N₂对瓦斯气样G2爆炸超压影响

Figure 3. Influence of N₂ on explosion overpressure of mine gas G2

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图 4 N₂对瓦斯气样G3爆炸超压影响

Figure 4. Influence of N₂ on explosion overpressure of mine gas G3

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图 5 工况2条件下瓦斯爆炸超压

Figure 5. Explosion overpressure of mine gas in condition 2

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图 6 工况3条件下下瓦斯爆炸超压

Figure 6. Explosion overpressure of mine gas in condition 3

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图 7 CO₂对瓦斯气样G1爆炸超压的影响

Figure 7. Influence of CO₂ on explosion overpressure of mine gas G1

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图 8 CO₂对瓦斯气样G2爆炸超压的影响

Figure 8. Influence of CO₂ on explosion overpressure of mine gas G2

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图 9 CO₂对瓦斯气样G3爆炸超压的影响

Figure 9. Influence of CO₂ on explosion overpressure of mine gas G3

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图 10 工况4条件下CO₂对瓦斯爆炸超压的影响

Figure 10. Influence of CO₂ on explosion overpressure in condition 4

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图 11 工况5条件下CO₂对瓦斯爆炸超压的影响

Figure 11. Influence of CO₂ on explosion overpressure in condition 5

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表 1 在气样G1、G2、G3充入不同比例N₂后瓦斯气体组分

Table 1. Gas composition after filling different proportion of N₂ in samples G1, G2, G3

编号	工况1	工况2	工况3
G1	7.00%CH₄-19.53%O₂-73.47%N₂	6.42%CH₄-17.92%O₂-75.66%N₂	6.14%CH₄-17.13%O₂-76.73%N₂
G2	9.40%CH₄-19.03%O₂-71.57%N₂	8.62%CH₄-17.46%O₂-73.92%N₂	8.25%CH₄-16.55%O₂-75.20%N₂
G3	10.20%CH₄-18.86%O₂-70.94%N₂	9.36%CH₄-17.30%O₂-73.34%N₂	8.95%CH₄-16.54%O₂-74.51%N₂

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表 2 在气样G1、G2、G3充入不同比例CO₂后瓦斯气体组分

Table 2. Gas composition after filling different proportion of CO₂ in mine gas G1, G2, G3

编号	工况1	工况4	工况5
G1	7.00%CH₄-19.53%O₂-73.47%N₂	6.42%CH₄-17.92%O₂-67.40%N₂-8.26%CO₂	6.14%CH₄-17.13%O₂-64.45%N₂-12.28%CO₂
G2	9.40%CH₄-19.03%O₂-71.57%N₂	8.62%CH₄-17.46%O₂-65.66%N₂-8.26%CO₂	8.25%CH₄-16.55%O₂-62.92%N₂-12.28%CO₂
G3	10.20%CH₄-18.86%O₂-70.94%N₂	9.36%CH₄-17.30%O₂-65.08%N₂-8.26%CO₂	8.95%CH₄-16.54%O₂-62.23%N₂-12.28%CO₂

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