气象条件对地下煤火浅层温度的影响  

Effect of local meteorological conditions on shallow subsurface temperature above underground coal fire

作　　者：刘晓晨[1,2,3] 武建军[1,2,3] 刘明[1,2,3] 蒋卫国[1,2,3] 顾磊[4] 

机构地区：[1]北京师范大学地表过程与资源生态国家重点实验室,北京100875 [2]北京师范大学民政部/教育部减灾与应急管理研究院,北京100875 [3]北京师范大学环境演变与自然灾害教育部重点实验室,北京100875 [4]首都师范大学资源环境与旅游学院,北京100037

出　　处：《煤炭学报》2011年第8期1334-1341,共8页Journal of China Coal Society

基　　金：国际科技合作重点资助项目(2007DFA90500)

摘　　要：选择内蒙古乌达煤田火区中的18号火区作为研究区域,对浅层测温数据进行分析研究,分别量化分析了降水量、气温、风速3个气象要素与地下煤火浅层温度在时空上的变化趋势及它们之间的关系。结果表明:降水量是影响地下煤火浅层温度变化的重要因素,大的降水过程可达到降低煤火浅层温度的效果;气温的日变化对于地下煤火的影响只限于表层,季节性变化影响的深度更大;风速与地下煤火之间在短期内并没有直接的作用关系,但它会影响到火区的通风供氧与煤火信息的提取。Fire zone 18 of Wuda coalfield in Inner Mongolia was selected as the study area.Variation series of temperature measured on spatial and vertical layers of ground subsurface was analyzed,as well as three meteorological factors as precipitation,air temperature and wind speed;meanwhile,correlation between the measurement temperature and meteorological factors were quantitative analyzed.Preliminary conclusions are drawn as：precipitation is a significant factor to underground coal combustion,heavy rainfall may get to the burning center to decrease temperature,and long-term rich precipitation can,to a certain extent,suppress combustion;effects of air temperature on underground coal fire is limited to the surface,but the seasonal variation can far deeply influence the vertical temperature above fire;wind speed didn＇t show any directly effect on coal fire in short term,while the local wind condition is very probable to affect the combustion system and the information extraction of underground coal fire.

关 键 词：地下煤火 地表浅层温度 降水量 气温 风速 

分 类 号：TD752[矿业工程—矿井通风与安全]