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布罗克地下水电站位于挪威南部山区。装机容量30万kW,年平均发电量为11.25亿kW·h。岩石总开挖量为253万m~3,是阿尔卑斯山勃朗峰隧道总开挖量的3倍,是长江三峡洞挖量的1.6倍,仅次于二滩地下开挖。岩石开挖包括下列各项: 主洞主洞为马蹄形、开挖面积为70.2m~2,洞宽为10.3m洞高为7.8m。主洞长27.3km,由5条支洞以略为上倾的坡度开挖。
Brock underground power station is located in the mountains of southern Norway. Installed capacity of 300,000 kW, the average annual generating capacity of 11.25 billion kW · h. The total excavation volume of rock is 2.53 million m 3, which is 3 times of the total excavation volume of the Mont Blanc tunnel in the Alps and 1.6 times of that of the Three Gorges of the Yangtze River, second only to the excavation of the Second Beach. Rock excavation include the following: The main hole of the main hole is horseshoe-shaped, excavation area of 70.2m ~ 2, hole width of 10.3m hole height of 7.8m. The main hole is 27.3km long and is excavated from 5 branches with a slightly upturned slope.