煤尘爆炸特征参数影响因素研究

刘贞堂; 郭汝林; 喜润泽

doi:10.13272/j.issn.1671-251x.2014.08.008

煤尘爆炸特征参数影响因素研究

doi: 10.13272/j.issn.1671-251x.2014.08.008

刘贞堂^{1, 2},
郭汝林^{1, 2},
喜润泽^{1, 2}

1.
1．煤矿瓦斯与火灾防治教育部重点实验室，江苏徐州221116
2.
2．中国矿业大学安全工程学院，江苏徐州221116

基金项目:

国家自然科学基金资助项目（51174200）

详细信息

中图分类号: TD714.5
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出版历程
- 刊出日期: 2014-08-10

Research of influence factors on characteristic parameters of coal dust explosio

LIU Zhentang^{1, 2},
GUO Rulin^{1, 2},
XI Runze^{1, 2}

1.
Key Laboratory of Gas and Fire Control for Coal Mines, Xuzhou 221116, China
2.
School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China

摘要

摘要: 采用20 L球形爆炸装置研究了煤尘粒径、浓度、点火能量对煤尘爆炸最大压力、爆炸最大压力上升速率的影响。研究结果表明，在煤尘粒径一定的条件下，随着煤尘浓度的增大，爆炸最大压力及爆炸最大压力上升速率先增大后减小，煤尘浓度在400～480 g/m3之间取得爆炸最大压力最大值0.94 MPa、爆炸最大压力上升速率最大值28.79 MPa/s；在煤尘浓度一定的条件下，爆炸最大压力不随煤尘粒径的减小而单调变化，爆炸最大压力上升速率随煤尘粒径的减小而逐渐增大；随着点火能量的增大，爆炸最大压力及爆炸最大压力上升速率明显增加。
- 煤尘爆炸 /
- 球形爆炸装置 /
- 煤尘浓度 /
- 煤尘粒径 /
- 点火能量 /
- 爆炸特征参数 /
- 爆炸最大压力 /
- 爆炸最大压力上升速率
Abstract: Influence of particle size, concentration and ignition energy of coal dust on the maximum pressure and its rising rate of coal dust explosion were researched by use of 20 L spherical explosion equipment. The research results show that under the condition of certain particle size of coal dust, the maximum pressure and its rising rate of coal dust explosion will increase firstly and then decrease along with increasing of concentration of coal dust. When concentration of coal dust is in 400-480 g/m3, the maximum pressure and its rising rate of coal dust explosion achieve the maximal value of 0.94 MPa and maximum 28.79 MPa/s respectively. Under the condition of certain concentration of coal dust, the maximum pressure of coal dust explosion will not change in a similar tendency and its rising rate will increase along monotone with decreasing of particle size of coal dust. The maximum pressure and its rising rate of coal dust explosion will increase significantly along with increasing of ignition energy.
- coal dust explosion /
- spherical explosion equipment /
- concentration of coal dust /
- particle size of coal dust /
- ignition energy /
- characteristic parameter of explosion /
- the maximum explosion pressure /
- risi