摘要
为消除内蒙古平庄煤业(集团)有限责任公司六家煤矿(以下简称“六家煤矿”)西二采区6煤回采面临顶板辉绿岩裂隙水害威胁,采取了物探、钻探、化探和抽(放)水试验等综合探测手段,查明了辉绿岩侵入综合含水体的含水性、富水性和水文地质参数,并根据辉绿岩水在六家煤矿的赋存与分布特征,制定了以提前疏放静储量为主的水害综合防控技术。通过对井下的8个探放水钻孔持续放水,观测疏放水量、疏放水时间与辉绿岩裂隙水位之间的变化关系,分析了放水量与水位、放水时间之间的变化关系,同时对辉绿岩水位降低至-30 m时的水文地质条件进行预测,确定了辉绿岩水位在目前放水条件下,将在未来9个月左右下降至6-3号煤层底板,相应煤层工作面开采将不再受辉绿岩水的威胁,为矿井下一步的安全生产提供了保障。
In order to eliminate the threat of roof diabase fissure water hazard faced by the No.6 coal seam in West No.2 mining area of the Liujia Coal Mine of Inner Mongolia Pingzhuang Coal Industry(Group) Co.,Ltd.(hereinafter referred to as "Liujia Coal Mine"),comprehensive exploration methods such as geophysical exploration,drilling,geochemical exploration and water pumping(drainage) test were adopted to find out the water content,water yield and hydrogeological parameters of diabase intrusion into the comprehensive water bearing body,and a comprehensive water disaster prevention and control technology based on early drainage of static reserves was developed according to the occurrence and distribution characteristics of diabase water in Liujia Coal Mine.Through the continuous drainage of 8 water exploration and drainage boreholes in the mine,the variation relationship between the drainage amount,drainage time and the diabase fissure water level is observed,the variation relationship between the drainage amount,water level and drainage time is analyzed,and the hydrogeological conditions when the diabase water level drops to-30 m are predicted,and it is determined that the diabase water level will drop to the floor of No.6-3 coal seam in the next 9 months or so under the current drainage conditions,and then the mining of corresponding coal seam working face will no longer be threatened by diabase water,which provides a guarantee for the next safety production of the mine.
作者
曲国文
QU Guowen(Inner Mongolia Pingzhuang Coal Industry(Group)Co.,Ltd.,Chifeng,Inner Mongolia 024076,China)
出处
《中国煤炭》
2022年第S02期171-179,共9页
China Coal
关键词
辉绿岩
疏放水
防控技术
综合探测
diabase
water drainage
prevention and control technology
comprehensive exploration
