新沂河海口控制工程垂直位移变化研究

Study on vertical displacement change of Xinyi river estuary control project

以新沂河海口控制工程为研究对象,观测地表沉降对工程垂直位移变化的影响。结果表明地表沉降不但会引起水利工程垂直位移的异常变化,而且会引起参照水准点的高程不稳定,导致水利工程垂直位移观测数据失真。为精确测量水利工程垂直位移变化,特别是易产生地面沉降地区,保障水利工程安全有效运行,需定期联测沉降范围外水准点进行校核,同时可为苏北沿海地区水利工程垂直位移观测提供参考。

Taking Xinyi river estuary control project as a research object,influence of surface subsidence on vertical displacement change of the project was observed.The results showed that the surface subsidence would not only cause the abnormal change of vertical displacement of water conservancy project,but also cause the elevation instability of the reference leveling point,resulting in the distortion of the vertical displacement observation data of the water conservancy project.In order to accurately measure vertical displacement change of water conservancy projects,especially in areas prone to land subsidence,and ensure the safe and effective operation of water conservancy projects,it's necessary to regularly check the leveling points outside the settlement range,and provide reference for the observation of vertical displacement of water conservancy projects in the coastal areas of northern Jiangsu.