中文摘要：

论证二滩水电站拱坝反应台阵建设的必要性，介绍了台阵的设计安装和组成。最后，通过展示系统2002年4月20日记录到的强地震动加速度记录说明系统已经正常运行。

英文摘要：

The construction necessity for strong earthquake stations of Ertan arch dam is described in present paper. The design, installation and constitution are also introduced. At the end, some records of ground motions have been recorded in 20 April 2002, it is shown that the station is operated normally.