精密三角高程测量在跨河高程传递中的应用  

The Application of Precision Triangular Elevation Survey in Transition of Elevation Across Rivers

作　　者：黄赟[1] 王灵犀 李创 HUANG Yun;WANG Lingxi;LI Chuang(Chongqing Survey Institute,Chongqing 401120,China)

机构地区：[1]重庆市勘测院,重庆401120

出　　处：《城市勘测》2022年第5期130-133,共4页Urban Geotechnical Investigation & Surveying

基　　金：重庆市技术创新与应用发展重点项目(cstc2019jscx-mbdx0029)。

摘　　要：对于河谷等地形起伏大、地貌多变、环境复杂的区域,工程项目的勘察、施工、监测具有较大困难,尤其是高程的传递。精密三角高程测量法具有受地形制约少、传递高程迅速、观测精度高等优点,是大跨度复杂地形条件下精密高程传递的常用方法。本文详细介绍了精密三角高程测量的原理、观测流程。通过在重庆某轨道交通工程跨河高程传递中进行应用,结果表明,成果精度能够满足二等水准的规范要求,且降低了劳动强度,提高了作业效率,对同类工程具有很好的借鉴意义。For areas with large topographic relief,changeable landform and complex environment,such as river valleys,the survey,construction and monitoring of engineering projects are very difficult,especially the transmission of elevation.The precision triangulation elevation measurement method has the advantages of less restriction by terrain,rapid transmission of elevation,and high observation accuracy.It is a common method for transmission of precision elevation under large-span and complex terrain conditions.This article introduces the principle and observation process of precision triangulation elevation measurement in detail.Through the application in the cross-river elevation transmission of a rail transit project in Chongqing,the results show that the accuracy of the results can meet the second-class standard requirements,reduce labor intensity,and improve operation efficiency,which has a good reference value for similar projects.

关 键 词：精密三角高程测量 复杂地形 跨河水准 二等水准 测量机器人 

分 类 号：P258[天文地球—测绘科学与技术]