大隆水利枢纽工程施工测量的受控性和时效性

大隆水利枢纽工程坝区地形起伏显著，建筑物覆盖面大，汛前竣工的分部工程多且相互关系紧密。因此，要求施工测量具有较强的受控性和明显的时效性。施工测量中采用了全球定位系统（GPS）和全站仪等先进的仪器和技术，它们在及时完成控制测量和细部测量中发挥了重要作用，取得了好的效果。

Controlled feature and time-effectiveness of construction survey for Dalong Water Control Project

So far as Dalong Water Control Project is concerned, the dam site is located in an area with an undulant landform, the coverage of the structures concerned is large and the appurtenant works to be completed before flood season are many with close interrelations. Therefore, the strongly controlled features and significant time-effectiveness of the construction survey are required. Under this circumstance, the advanced instruments and techniques such as total station and GPS are applied during the construction survey, which play important roles in the controlled survey and the detailed survey with good effects.