摘要
本文介绍了在虎门大桥高程控制同的施测中，采用光学测微法，利用自制的特殊觇牌，完成了珠江口1．1km～1．4km四段宽水域的跨河水准测量．其精度达到工程测量二等水准指标．这种方法设备简单、易于操作，具有实用、推广价值．
This paper introduces a method of the optical micrometry in the measuring ofvertical control network for Humen Bridge. The four perts of the broad estuary rivercrossing leveling is completed in the slope from 1. 1km to 1. 4km in the estuary of Zhujiang River, with the extraordinary signal was made by themselves. The accuracy iswithin reach 2nd-order leveling of engineering survey. This is a simple and practicalmethod.
出处
《四川测绘》
1994年第4期160-164,共5页
Surveying and Mapping of Sichuan
关键词
光学测微法
高程控制
跨河水准
桥
宽水域
method of the optical micrometry
vertical control
river crossing leveling
