大断面煤巷掘进工作面综掘机高压外喷雾降尘技术及装备的应用研究
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摘要
针对王家岭煤矿综掘工作面原有综掘机外喷雾压力低、工作压力不能满足《煤矿安全规程》要求,以及降尘效率较低等问题,在分析大断面煤巷掘进工作面产尘特点的基础上,采用二次负压喷雾降尘技术对其进行改造,重点开展了综掘机高效喷雾降尘装置、喷雾降尘工艺参数,以及机载喷雾降尘系统配套工艺等方面的研究,最终提出适用于大断面煤巷掘进工作面的高压外喷雾降尘技术及工艺。应用结果表明,在最佳工艺参数条件下,综掘机司机位置的总粉尘和呼吸性粉尘单项降尘措施的降尘效率可分别由57. 03%和51. 83%提高至81. 10%和76. 90%,综合降尘效率可分别由94. 39%和91. 03%提高至97. 85%和93. 32%。
In view of such problems as low external spray pressure of the original comprehensive excavator,working pressure failing to meet the requirements of"coal mine safety regulations",and low dust removal efficiency in Wangjialing Coal Mine,on the basis of analyzing the characteristics of dust production in the large section coal lane,the secondary negative pressure atomization dust removal technology is adopted to transform it. The research focuses on the high efficiency spray and dust removal device of the integrated excavator,the spray and dust removal process parameters,and the supporting process of the airborne spray and dust removal system,finally,the high pressure external spray dust removal technology that suitable for large section coal lane working face are put forward. The application results show that under the optimal process parameters,the dust removal efficiency of the single total dust and respiratory dust at the position of the driver of the integrated excavator can be improved from 57. 03% and 51. 83% to 81. 10% and 76. 90% respectively. The comprehensive dust removal efficiency can be improved from 94. 39% and 91. 03% to 97. 85% and 93. 32% respectively.
In view of such problems as low external spray pressure of the original comprehensive excavator,working pressure failing to meet the requirements of"coal mine safety regulations",and low dust removal efficiency in Wangjialing Coal Mine,on the basis of analyzing the characteristics of dust production in the large section coal lane,the secondary negative pressure atomization dust removal technology is adopted to transform it. The research focuses on the high efficiency spray and dust removal device of the integrated excavator,the spray and dust removal process parameters,and the supporting process of the airborne spray and dust removal system,finally,the high pressure external spray dust removal technology that suitable for large section coal lane working face are put forward. The application results show that under the optimal process parameters,the dust removal efficiency of the single total dust and respiratory dust at the position of the driver of the integrated excavator can be improved from 57. 03% and 51. 83% to 81. 10% and 76. 90% respectively. The comprehensive dust removal efficiency can be improved from 94. 39% and 91. 03% to 97. 85% and 93. 32% respectively.
引文
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[14]王晓珍,蒋仲安,王善文,等.煤巷掘进过程中粉尘浓度分布规律的数值模拟[J].煤炭学报,2007,32(4):387-390.
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[2]杨胜强.粉尘防治理论及技术[M].徐州:中国矿业大学出版社,2007.
[3]陆新晓,王德明,任万新,等.掘进面产尘机理及粉尘迁移规律的研究分析[J].煤矿开采,2012,17(5):19-22.
[4]马威,刘勇,陈芳.难湿润煤层快速综掘工作面粉尘防治技术[J].煤炭科学技术,2015,43(1):70-73.
[5]马威.综掘工作面分步立体式控降尘系统优化[J].煤矿安全,2015,46(2):82-84.
[6]张设计,刘勇,周润金,等.掘进工作面粉尘分布规律及控降尘工艺技术试验[J].矿业安全与环保,2010,37(2):30-33.
[7]聂文,程卫民,周刚,等.掘进机外喷雾负压二次降尘装置的研制与应用[J].煤炭学报,2014,39(12):2446-2452.
[8]聂文,程卫民,周刚,等.掘进面喷雾雾化粒度受风流扰动影响实验研究[J].中国矿业大学学报,2012,41(3):378-383.
[9]常建兵,刘涛,胥奎,等.综掘工作面粉尘防治技术研究[J].煤炭工程,2007(3):53-55.
[10]隋金君,胥奎.湿式旋流除尘中呼吸性粉尘除尘效率与风速关系的探讨[J].矿业安全与环保,2004,31(6):34-35.
[11]刘刚,昃玺,张仁贵.综掘工作面除尘技术研究与应用[J].工业安全与环保,2012,33(2):16-18.
[12]程卫民,张清涛,刘中胜,等.综掘面粉尘场数值模拟及除尘系统研制与实践[J].煤炭科学技术,2011,39(10):39-44.
[13]郭振新,刘守华,汪春梅,等.综合控、除尘技术在综掘工作面的研究与应用[J].矿业安全与环保,2010,37(3):47-49.
[14]王晓珍,蒋仲安,王善文,等.煤巷掘进过程中粉尘浓度分布规律的数值模拟[J].煤炭学报,2007,32(4):387-390.
[15]周茂普.综掘工作面通风除尘系统研发与应用[J].煤炭科学技术,2009,37(10):1-3.