盐酸洗井在九龙矿O_(2)-3水文观测孔中的应用

Application of hydrochloric acid cleaning well in Jiulong Mine O_(2)-3 hydrological observation hole

冀中能源峰峰集团九龙矿O_(2)-3水文观测孔抽水试验时,因为传统的六偏磷酸钠加活塞洗井方法效果较差,导致出水量为1.44 m^(2)/h,水温25℃,未能满足矿方的要求。针对这一情况,经过研究决定采用稀盐酸重新洗井。在使用盐酸浸泡洗井后,出水量增加为5.4 m^(2)/h,水温由原来的25℃增加到33℃,取得了良好的效果,很好的满足了矿方的要求,达到了此次抽水的目的。

In the pumping test of O_(2)-3 hydrological observation hole in Jiulong Mine of Jizhong Energy Fengfeng Group,the water output was 1.44 m^(2)/h and the water temperature was 25℃,which failed to meet the requirements of the mine,because the traditional method of cleaning well with hexametaphosphate sodium adding piston was poor.In view of this situation,it was decided to use dilute hydrochloric acid to clean well again.After well cleaning with hydrochloric acid soaking,the water output increased to 5.4 m^(2)/h,and the water temperature increased from the original 25℃to 33℃,which achieved good results and met the requirements of the mine.The application achieved the purpose of the pumping.