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鉴于垂直位移观测是监测各种工程建筑物和地质构造的重要手段,设计了瀑布沟水电站垂直位移监测控制网,基于精度评估原理,采用平差计算方法对垂直位移监测控制网进行了精度估算,并总结了水库蓄水后重力场变化对水准测量的影响及高差改正。结果表明,垂直位移监测控制网设计精度满足规范要求,建议在水库蓄水前后进行重力观测。
In view of the vertical displacement observation is an important means of monitoring various engineering buildings and geological structures, the vertical displacement monitoring and control network of Pubugou hydropower station is designed. Based on the accuracy assessment principle, the accuracy of the vertical displacement monitoring and control network is estimated by using the adjustment method. And summarizes the impact of the change of gravity field on the leveling and reservoir height correction after the reservoir is impounded. The results show that the design accuracy of vertical displacement monitoring and control network meets the requirements of the regulation, and it is suggested to observe the gravity before and after the impoundment of the reservoir.