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《洛列恩》金矿,采用四班工作制,经过27个工作日就在坚硬的石英岩里掘进了断面为2.75×3.04米的平巷700米。在掘进时,共有工人190名,其中包括掘进工132名,支架工36名。在掘进中,使用了凿岩车,在该车上装有10台型的凿岩机;凿上部炮眼使用6台,而下部炮眼则使用4台。在工作面上的炮眼总数为34个。纯凿岩速度为365—455毫米/分。压缩空气往工作面输送使用直径为122毫米的管道,而冲洗用水则采用直径为50毫米的管道。钎杆长度为2.7米,它由直径为25毫米的钎钢制成。钎头镶有钨碳钢制的合金
The Lorient gold mine used a four-shift working system to drive 700 m of a 2.75 × 3.04 m stretch of drift in hard quartzite after 27 working days. During the excavation, a total of 190 workers, including 132 excavators and stents workers 36. In the tunneling, a rock drilling vehicle was used, in which 10 models of rock drills were installed; six at the top of the chisel and four at the bottom of the blasthole. The total number of holes on the work surface is 34. Pure drilling speed of 365-455 mm / min. Compressed air travels to the working surface using a 122 mm diameter pipe, while flushing water uses a 50 mm diameter pipe. Rod length of 2.7 meters, which is made of 25 mm diameter brazing steel. Drill bit set with tungsten carbon steel alloy