南水北调中线工程施工测量控制网系统研究

Study on construction surveying control network of South-to-North Water Diversion Middle Route Project

根据南水北调中线总干渠工程规模巨大、建筑物多、输水线路长等特点,综合性地介绍了建立大规模、高精度水利工程施工控制网系统所进行的技术研究,包括:①施工测量控制系统方案研究;②施工控制网精度与等级论证;③长距离输水工程施工控制网坐标系统的选择;④各种测量标志类型不同地质条件下的稳定性研究;⑤国家控制点稳定性分析及不兼容性问题研究;⑥GPS短边混合网平差计算与应用软件的研究;⑦日月引力改正计算与应用软件的研究;⑧施工测量技术标准的制定等。该工程施工控制网系统的顺利建成,为南水北调中线工程提供了及时、可靠的测绘保障和技术服务。

According to the characteristics of South-to-North Water Diversion Middle Route Project such as large scale,a large amount of structures and long water diversion route,we comprehensively introduce the technologies of large-scale and high-accuracy construction surveying control network of hydraulic project,including： study on schemes of construction surveying control system,accuracy and grade determination of construction control network,selection of construction control network coordinate system for long-distance water diversion project,research on stability of various survey mark types under different geological conditions,stability analysis and incompatibility problem study of national control points,balancing calculation of GPS short side hybrid network and study on application software,correcting calculation of lunisolar gravitation and study on application software,establishment of technological standards of construction survey.The successful establishment of construction surveying control network of South-to-North Water Diversion Middle Route Project provides timely and reliable surveying support and technical service.