结果表明：（1）三峡坝区河谷深槽是在三峡地区构造抬升过程中，水流顺构造裂隙强烈侵蚀下切而形成的；
The deep troughs on the Three Gorges valley bottom are formed by river downcutting along the structurally zones on the background of regional tectonic uplift.
高拱坝泄洪消能的特点是坝高落差大，流量大，功率大，位于河谷狭窄地区，泄洪消能与防冲问题突出。
For high arch DAMS in valleys with the characteristics of high water head, large discharge and large power, the problems of energy dissipation and scour prevention are serious.
本文根据泥石流重力坝的使用要求与受力特性，用有限无法对建于狭窄河谷泥石流重力坝的空间效应作了较为详细的分析。
According to the useful requirements and bearing characteristics, the spacial effects of debris flow gravity dam at the narrow gully section were full analysed with finite element method.
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