摘要
大同矿区普遍面临着大气降水补给地下采场的问题,降水的渗入增加了矿井内的湿度与积水量,严重影响煤矿安全生产,为此利用现场勘查、理论研究等手段,在大同矿区地质、水文地质开采资料和矿井大气降水、矿井涌水量相关资料的基础上,对大同矿区大气降水补给矿井的通道进行了系统分析和研究,并根据研究成果提出了水害防治的有效措施。结果表明,大气降水对煤矿采场的补给具有季节性,雨季矿井涌水量是旱季的1.2~12倍,平均1.9倍,补给具有滞后性,地表入渗、管道流和分层流的滞后时间分别为2~4d、24 h以内和2 d以上,补给量受煤层埋深和煤层顶板岩性特征的影响。在受大气降水水害影响的矿井中,可实施地面水文地质钻探、物探等补充勘查,采取封堵地面引水裂隙、建设引水工程、调整工作面回采时间、改造排水系统等防治水工程进行水害防治。
Datong mining area is generally facing the problem of atmospheric precipitation supplying underground stopes.The infiltration of precipitation increases the humidity and water accumulation amount in the mine,seriously affecting safety production of the coal mine.Therefore,using means of on-site exploration,theoretical research and others,based on geological and hydrogeological mining data,as well as relevant data on mine atmospheric precipitation and mine water inflow amount in Datong mining area,a systematic analysis and study of the channels for atmospheric precipitation supplying the mine in Datong mining area are conducted,and effective measures for water disaster prevention and control are proposed according to the research results.The results indicate that atmospheric precipitation has seasonal effects on the supplying of coal mine stopes.The water inflow amount of the mine during the rainy season is 1.2-12 times that of the dry season,with an average of 1.9 times.The supplying has lag effect,with lag times of 2-4 days for surface infiltration,within 24 hours for pipeline flow,and over 2 days for stratified flow,respectively.The supplying amount is influenced by the burial depth of the coal seam and the lithological characteristics of the coal seam roof.In mines affected by atmospheric precipitation and water disasters,supplementary exploration such as surface hydrogeological drilling,geophysical exploration and so on can be implemented.Water prevention and control engineerings such as sealing surface water diversion fissures,constructing water diversion engineerings,adjusting working face stoping time,transforming drainage systems and others can be adopted to conduct water disaster prevention and control.
作者
王敏岐
Wang Minqi(Dimei Datong Co.,Ltd.,Jinneng Holding Coal Industry Group,Datong 037001,China)
出处
《山东煤炭科技》
2025年第3期98-102,107,共6页
Shandong Coal Science and Technology
关键词
大同矿区
大气降水
涌水量
裂隙
Datong mining area
atmospheric precipitation
water inflow amount
fissure
作者简介
王敏岐(1986-),男,陕西宝鸡人,2011年毕业于西安科技大学地质工程专业,本科,工程师,现从事煤矿地质防治水工作。
