矿坑涌水直接危及地下矿山矿井安全，保障矿山安全渡汛是地下矿山的重大课题。
The gush-out water in the mineral pit endangers the underground mine safety directly.
本文介绍了采金船渡汛时的停泊方向及采金船在洪水中可能产生拖曳力的估算方法。
The drag forces are the major forces that make the object move in the horizontal direction.
通过龙羊峡水库合理运行方式研究，确定公伯峡水电站渡汛方案以及提高渡汛标准方案。
Through studying Longyangxia reservoir reasonable operation mode, Gongboxia hydro-power station's flood period scheme and improvement flood period standard scheme are established in this paper.
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