煤矿安全2018，Vol.49Issue(2)：31-34,4.DOI:10.13347/j.cnki.mkaq.2018.02.009
水煤堆自燃高温位置特征的数值模拟与实验
Experiment and Numerical Simulation of High Temperature Region Distribution for Coal Pile Containing Water
摘要
Abstract
In order to study the distribution characteristic of location of high temperature region during coal pile spontaneous combustion,the unsaturated heat transfer mathematical model of coal pile containing water was established.Then the numerical simulation was used to compare the high temperature region position between coal pile containing water and dry coal pile,and the location of high temperature region distribution of three kinds coal pile for high water level,middle level and low level is calculated.The results show that the heat dissipation area,spontaneous combustion area and high temperature inside the lower-middle part of coal pile are formed from the surface to the interior.Due to slow evaporation,the deep part is not combustion easily and the high temperature region can develop forward to dry part reverse the windward side;the higher the water,the closer the high temperature zone is to the surface.According to this conclusion,the experiment was carried to verify it,and the results between them meet well,hence,the safety management of coal fields should consider the moisture content of coal piles to predict the location of spontaneous combustion.关键词
含水煤堆/干燥煤堆/高温区位置/蒸发/自燃Key words
coal pile containing water/dry coal pile/location of high temperature region/evaporation/spontaneous combustion分类
矿业与冶金引用本文复制引用
刘星魁,杜学胜,常绪华..水煤堆自燃高温位置特征的数值模拟与实验[J].煤矿安全,2018,49(2):31-34,4.基金项目
国家自然科学基金资助项目(51404089) （51404089）
河南省科技攻关基金资助项目(132102210448) （132102210448）
河南工程学院博士基金资助项目(D2013023) （D2013023）
