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新高山副斜井于1982年11月破土动工,采用强行通过冲积层的方法,但由于涌水量高达128米~3/时,工程进展缓慢,直到1983年11月底才完成76.7米,平均月成井5.9米。为了加快矿井建设速度,必须创造打干井的条件,于是我们请煤炭科学院北京建井所进行注浆堵水的技术咨询服务工作。从1983年12月20日开始准备,到1984年3月6日注浆结束,经过井筒清理和掘进放炮后,实测涌水量稳定在6米~3/时以下,取得了很好的效果。 一、工程概况 新高山副斜井是大同矿务局四台沟矿井的一部分,与主斜井相距40米,平行向北26°东延伸,井筒坡度22°,净断面9.68米~2,掘进断面16.19米~2,井筒铺底厚200毫米,井筒
The new Alpine sub-inclined shaft broke ground in November 1982 and adopted a method of forcibly passing alluvial layers. However, as the influx of water reached 128 m 3 / h, the project progressed slowly and it was only 76.7 m completed by the end of November 1983, 5.9 meters. In order to speed up the construction of mines, it is necessary to create the conditions for drilling and drying wells. Therefore, we asked the Beijing Academy of Coal Mine Sciences for technical consultation on grouting and water blocking. From December 20, 1983 began to prepare, to March 6, 1984 grouting end, after wellbore cleaning and blasting, the measured gushing water stable at 6 m ~ 3 / h or less, and achieved good results. I. Project Overview The new Gaoshan sub-inclined shaft is a part of the Sitai Gully mine in Datong Mining Bureau. It is 40 meters away from the main inclined shaft and extends eastward parallel to the north with an angle of 26 degrees eastward with a slope of 22 degrees and a net cross section of 9.68 meters to 2 meters. Section 16.19 m ~ 2, wellbore bottom thickness of 200 mm, wellbore