Abstract: By introduction of the measurement work before the closure of bottom outlet at Shuikou hydropower station, the paper introduces the application of needle beam measuring method. The unevenness of dam surface can be measured with high accuracy. Further, this method is reliable, worthy popularization.

Key words: Shuikou hydropower station, needle beam measuring method, unevenness of dam surface

摘要： 通过对水口水电站泄水底孔封堵前期测量工程的介绍，描述了“针束测量法”在本次工程中的应用。“针束测量法”测量可靠，能够直观、准确地反映待测量坝面的曲面形状，适用于坝面不平度的准确测量。

关键词: 水口水电站, 针束测量法, 坝面不平度