| 综采面采煤机割煤粉尘分布特性及防治技术 |
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| 引用本文： | 徐厚学,施国华,郑彦奎. 综采面采煤机割煤粉尘分布特性及防治技术[J]. 煤矿安全, 2013, 44(3): 75-77 |
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| 作者姓名： | 徐厚学 施国华 郑彦奎 |
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| 作者单位： | 1. 中国煤炭科工集团 重庆研究院,重庆,400037
2. 山西中煤华晋能源有限责任公司,山西 运城,044000 |
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| 摘 要： | 在对采煤机附近风速和粉尘浓度分布特点分析的基础上,采用组合喷雾,在滚筒处形成空间"立体交叉"式高压喷雾,对采煤机割煤产尘进行控制和沉降。分析结果表明:局部风速增高是司机作业区粉尘污染加剧的重要原因;逆风割煤时粉尘扩散加快,且采煤机下风侧粉尘浓度峰值较顺风割煤时高;采取控降尘技术后,司机位置和采煤机下风侧10 m处降尘效率分别为82.72%和86.63%。
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| 关 键 词： | 风速分布 粉尘浓度分布 高压喷雾 尘源跟踪 |
Distribution Characteristics of Dust Produced in Cutting Coal and Prevention Technology at Fully-mechanized Coal Face |
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| Abstract: | On the basis of analyzing the speed wind and distribution characteristics of dust concentration around shearer.Combination spray,space "vertical crossing "high-pressure spray formed in tumbler,is used to control the dust production in cutting coal.Research shows that the increase of local wind speed is the aggravated dust pollution in driver operating region,the dust spreads faster when cutting coal against wind,and the dust concentration is higher in shearer downwind side when following wind.After taking the dust reduction technology,the dust removal efficiencies of driver position and shearer downwind side 10 m are 82.72% and 86.63% respectively. |
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| Keywords: | the wind speed distribution dust concentration distribution high-pressure spray dust source tracking |
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