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我部于1980年在汨罗江下游江面上进行砂钻施工,截至1982年9月竣工钻孔353个,累计进尺3117.43米,平均孔深8.58米,最深孔20.60米,平均台月效率650米,最高达900米。
In 1980, the Ministry of Construction conducted sand drilling on the river surface at the lower reaches of the Miluo River. As of September 1982, a total of 353 drilling holes were completed with a total footage of 3117.43 meters, an average depth of hole of 8.58 meters and a depth of 20.60 meters. The average Taiwan and Taiwan efficiency of 650 meters, up to 900 meters.