长兴岛防汛堤防工后水平位移监测技术总结  

Summary of Post-construction Horizontal Displacement Monitoring Technology of Flood Control Dike in Changxing Island

作　　者：张祖杰 ZHANG Zujie

机构地区：[1]上海市市政公路工程检测有限公司,上海市201108

出　　处：《城市道桥与防洪》2022年第11期199-201,I0019,共4页Urban Roads Bridges & Flood Control

摘　　要：江、河、湖、海的堤防附近往往存在很多树木或者建筑设施,堤防水平位移的监测采用GPS时,信号容易受到水面多路径效应和周边树木或建筑设施遮挡的影响,而以堤防以外较远区域的基准网为定向设站点,采用全站仪坐标法、交会法、极坐标法、视准线法受到遮挡限制,难以覆盖所有测点。在能与基准网通视的堤防局部位置设置临时工作基点,采用自动全站仪多测回测角测量导线的方法建立临时工作基点网,然后加密联测其他与基准网不好通视的监测点,可以解决该问题。There are often many trees or building facilities near the embankments of rivers,lakes,rivers and seas.When GPS is used to monitor the horizontal displacement of the embankments,the signal is easy to be blocked by the water surface and the surrounding trees or the building facilities.Taking the datum network in the far area beyond the dike as the directional site,the total-station coordinate method,intersection method,polar coordinate method and collimation line method are also blocked if used,which are difficult to cover all measuring points.The temporary working base points are set at a local position of the dike that can be communicated with the benchmark network.The method of multi-return measurement angle to measure traverse with automatic total station is used to establish the temporary working base point network.Then,the problem can be solved by encrypting and co-measuring the other monitoring points which are not well connected with the benchmark network.

关 键 词：全站仪导线法 导线测量 水平位移 多测回测角 堤防位移监测 

分 类 号：TV5[水利工程—水利水电工程]