中文摘要：

锦屏一级电站坝址区大理岩中发育有一定量绿片岩,对坝基抗滑稳定不利。为定量了解锦屏一级水电站坝基绿片岩的发育情况及其规律,依据右岸建基面1 885-1 720 m高程绿片岩现场实测资料,用全迹长法对绿片岩的迹长、间距、连通率等几何参数进行了统计及分析;最后给出了绿片岩连通率的建议值。在此基础上,结合物探声波资料,进一步分析了绿片岩的发育对坝基岩体质量的影响,定性分析了绿片岩对右岸坝基抗滑稳定的影响,为进一步对右岸坝基抗滑稳定性分析及计算提供了依据。

英文摘要：

A certain amount of greenschists developed in marble of dam site of Jinping I Hydropower Station,it is bad for antisliding stability of dams. In order to quantitatively describe the development and law of greenschist in Jinping I Hydropower Station,geometry parameters about right abutment greenschists（ EL. 1 885 - 1 720 m） were statistically analyzed by full trajectory method with site data and design plots,such as trace,connectivity and space.In the end,a proposal value about greenschist connectivity was attained. On this basis,with the data of geophysical exploration and sound wave,further analysis of the influence to rock quality and antisliding stability in right abutment of the development of greenschist is done,which further more gives a necessary support to evaluate the stability of right abutment.