摘要
介绍了港珠澳大桥沉管隧道碎石基础结构测量控制内容,针对沉管隧道水下标高测量精度高的特点,通过对多波束测深数据的对比分析,验证了测深数据的精度及可靠性。并基于多波束数据量大、相对精度高的优点,提出特制单波束数据与多波束数据相结合的水下标高点面控制法和深水深槽结构物尺寸图上测量法,实现了沉管隧道碎石基础质量全面控制,并为管节安装快速决策提供依据。
The survey control items of immersed tunnel gravel bed of Hongkong-Zhuhai-Macao Bridge are discussed firstly.Aiming at the high elevation accuracy of the gravel bed under sea water,this paper verifies the accuracy and reliability of sounding data through comparison and analysis of multibeam sounding data. The point and plan combined survey method based on the special designed single beam sounding and the multibeam sounding are put forward. And the drawing measuring method for the structure size measurement of the deep grooves under the deep seawater is proposed based on the massive and high precision data. These methods implement the immersed tube tunnel gravel basic comprehensive quality control and provide the basis for the quick decisions of socket installation.
出处
《海洋测绘》
CSCD
2017年第6期50-53,共4页
Hydrographic Surveying and Charting
关键词
多波束测深
沉管隧道
碎石基床
港珠澳大桥
数据分析
multibeam echosounding
immersed tunnel
gravel b ed
Hongkong-Zhuhai-Macao Bridge
data analysis
