凌津滩大坝共布置了4组正、倒垂线,用以观测大坝的水平位移.垂线观测资料分析表明:垂线水平位移主要受温度影响,其次是水压,时效影响较小;正、倒垂线测点位移变形规律基本正常.
段绍辉.凌津滩大坝垂线观测资料分析[J].河海大学学报(自然科学版),2002,(S1):27-31.(.[J]. Journal of Hohai University (Natural Sciences),2002,(S1):27-31.(in Chinese))