由于各种因素的影响,核电站、水电工程等建筑物及设备的运营过程中,都会产生变形,特别是核电站区断裂活动、边缘危岩体的滑动、基础的位移,从而影响正常使用,危及安全。然而传统的三角网控制方法已无法满足高精度的变形观测需要。因此采用了地形 Due to the influence of various factors, deformation will occur during the operation of nuclear power plants, hydropower projects and other buildings and equipment, especially the fracture activities of nuclear power plant areas, the sliding of marginal dangerous rock masses, and the displacement of foundations, which will affect normal use and endanger safety. . However, the traditional triangulation control method can not meet the needs of high-precision deformation observation. Therefore the terrain was used