全站仪与编程计算器辅助试算法在南水北调渠道圆曲线测设中的应用

The Application of Total Station and Assistant Trial Method Using Programmable Calculator in South-to-North Water Channel Circular Curve Measuring and Setting

圆弧曲线是渠道设计的重要组成部分，特别在南水北调大型渠道工程施工过程中，圆弧段渠堤的填筑、开挖及坡面混凝土衬砌均为机械化施工，测量作业不仅任务繁重，而且测量精度要求高。介绍的全站仪任意设站、可编程计算器辅助试算法进行圆曲线测设的方法，计算简单、测设便捷，而且可在不需要知道曲线上某点里程的情况下进行，从而避免了按预先给定的曲线点反算的测设数据放样不通视而转站的麻烦。特别在现场地形复杂的渠道工程能够准确、快捷的进行施工放样。

Circular curve is an important component in channel design, especially in construction process of large channel in the South-to-North Water Transfer Project. Filling, digging and slope concrete lining of circular embankment is all in mechanization method. The measure work is hard,and the accuracy is highly required. With the multiple development of modern construction survey technology, and the continually renewal of total station measuring technology, measure work becomes faster and more flexible. It introduced the circular curve measuring and setting method by the total station freely setting up and assistant trial method using programmable calculator. The computation is simple and the surveys is conveniently. Moreover, it can be run not need to know the distance of some point in the curve. Thus it can avoid to change station. Particular ly the channel construction layout is conducted fast and accurately with complicated land features.