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目前,水力发电引水隧洞正向高水头方向发展,许多已建成电站的水头超过了1000m,还有部分工程正接近1500m.尽管以往的隧洞设计符合传统的设计准则,但仍有失事情
At present, the hydropower diversion tunnel is heading for a high water head, and many of the completed power stations have a head over 1000m and some projects are approaching 1500m. Although the conventional tunnel design conformed to the traditional design criteria, there were still some incidents