孤岛面遗煤氧化自燃特性以及“滞后”效应研究  

Study on the characteristics of left coal spontaneous combustion and the lagging effect in isolated face

作　　者：孙超 李瑞 姜维 闫旭斌 刘文永 SUN Chao;LI Rui;JIANG Wei;YAN Xu-bin;LIU Wen-yong(Tangjiahui Coal Mine,Ordos Huaxing Energy Co.,Ltd.,Ordos 017100,China;Zhungeer Coal Bureau,Ordos 017100,China;Xi＇an Tianhe Mining Technology Co.,Ltd.,Xi＇an 710065,China;College of Safety Scienee and Engineering,Xi＇an University of Scienee and Technology,Xi＇an 710054,China;Key Laboratory for Prevention and Control of Coal Fires in Shaanxi Provinee,Xi＇an 710054,China)

机构地区：[1]鄂尔多斯市华兴能源有限责任公司唐家会煤矿,内蒙古鄂尔多斯017000 [2]准格尔旗煤炭局,内蒙古鄂尔多斯017000 [3]西安天河矿业科技有限责任公司,陕西西安710065 [4]西安科技大学安全科学与工程学院,陕西西安710054 [5]陕西省煤火灾害防治重点实验室,陕西西安710054

出　　处：《陕西煤炭》2018年第6期17-21,8,共6页Shaanxi Coal

摘　　要：为了有效预防孤岛工作面遗煤氧化自燃,采用公斤级的程序升温装置对孤岛面的原煤和浸水煤初次和二次氧化升温、降温过程的自燃特性及"滞后"效应进行研究,结果表明:原煤和浸水煤升温、降温过程气体产物曲线呈现"非对称性",升温过程相对降温过程产生"滞后"效应;初次氧化之后,二次氧化过程耗氧速率增大,自燃危险性增大;原煤浸水之后,自燃危险性显著增大。In order to effectively prevent coal spontaneous combustion in the isolated working face,the spontaneous combustion characteristics and the lagging effect of the initial and secondary oxidation heating and cooling processes of the raw and soaking coal in the isolated face were studied by a kilogram level temperature programmed device. The results show that the gas product of the raw coal and soaking coal during heating and cooling shows asymmetric curve, the heating process produces lagging effect relative to the cooling process, the oxygen consumption rate and spontaneous combustion risk increases during the secondary oxidation process, and the spontaneous combustion risk of the soaking coal increases significantly.

关 键 词：二次氧化 浸水煤 “滞后”效应 降温 初次氧化 

分 类 号：TD752.2[矿业工程—矿井通风与安全]