王洼二矿上分层遗煤自燃特性的试验研究
Experiment Research on Remaining Coal Spontaneous Combustion in Wangwa No.2 Mine Higher Slice
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摘要: 为了掌握王洼二矿5号煤上分层遗煤的自燃规律,通过程序升温实验台对5号煤上分层遗煤与原始煤样的自燃特性参数进行对比研究。研究发现王洼二矿上分层遗煤的耗氧速率、CO产生率、CO2产生率与放热强度均要大于原始煤样且120 ℃后更加明显,而上分层遗煤煤样特征温度及生成C2H4和C2H6气体所需温度均低于原始煤样,说明王洼二矿5号煤上分层遗煤更易发生自燃,危险性较大。Abstract: In order to grasp the coal spontaneous combustion laws of remaining coal in Wangwa No.2 Mine 5# coal higher slice, by using programmed temperature rising test, we make a comparative study about coal spontaneous combustion characteristics of remaining coal in 5# coal higher slice and original coal sample. The results show that oxygen consumption rate, CO production rate, CO2 production rate and limit heat releasing strength of remaining coal in 5# coal higher slice would be higher than that of original coal sample and the tendency would be more obvious after 120 ℃, but the characteristic temperature and the required temperature of generating C2H4 and C2H6 gas about remaining coal in higher slice is lower than that of the original coal sample. It illustrates that the remaining coal in 5# coal higher slice is prone to occur spontaneous combustion with higher risk.
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[1] 张检波.煤峪口矿分层工作面自然发火原因及预防[J].煤矿安全,2004,35(10):36-38. [2] 丁大同.厚煤层分层开采下分层工作面回采期间采空区遗煤自燃的防治[J].煤矿安全,2004,35(10):34. [3] 薛永利,赵亮,冯浩.特厚煤层分层开采煤自燃防治技术研究[J].煤矿现代化,2016(1):37-40. [4] 张留玉.中厚煤层开采自然发火防治[J].中州煤炭,2010(3):88-90. [5] 文虎,程斌,翟小伟,等.下分层采煤工作面回撤期间自然发火防治技术[J].煤炭科学技术,2014,42(4):54-56. [6] 陶可,张淑娟,张磊.巨厚煤层分层开采条件下的自然发火防治技术[J].山东煤炭科技,2014(5):52-54. [7] 徐精彩,文虎,葛岭梅,等.松散煤体低温氧化放热强度的测定和计算[J].煤炭学报,2000,25(4):387. [8] 邓军,徐精彩,徐通模,等.煤自燃性参数的测试与应用[J].燃料化学学报,2001,29(6):553-556. [9] 徐精彩,张辛亥,文虎,等.煤氧复合过程及放热强度测算方法[J].中国矿业大学学报,2000,29(3):253. [10] 徐精彩.煤自燃危险区域判定理论[M].北京:煤炭工业出版社,2001. [11] 邓军,赵婧昱,张嬿妮.基于指标气体增长率分析法测定煤自燃特征温度[J].煤炭科学技术,2014,42(7):49-52.
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