GPS联合数字测深仪在水库库容测量中的应用研究

将GPS-CORS网技术联合数字测深仪应用于遥桥峪水库库容测量中,在三维设计软件Civil3D中构建了遥桥峪水库库区的三维地形曲面,通过二次开发实现了不同水位对应淹没面积及库容量的自动计算,且实现了库容曲线的自动绘制。同时,通过此方法与其他常用的库容计算方法的对比,论述了其准确性和可靠性。文中还分析了利用该方法进行库容测量中的各种误差来源及其对平面和高程误差精度的影响,并探讨了相应的测量成果中误差分析模型。通过遥桥峪水库库容的实地测量,验证了这一方法在库容测量中的可行性和优越性。

Application of GPS combined with digital echo sounder to reservoir storage survey

Based on the actual application of GPS-CORS network combined with digital echo sounder to the storage survey of Yaoqiaoyu Reservoir， the 3-D topographic curved surface of the reservoir area is established in the 3-D design software——Civil 3D， thus not only the automatic calculation of the reservoir inundated area and storage those are corresponding to various water levels is realized through the secondary development， but the automatic mapping of the reservoir storage curve is also achieved. Meanwhile， this method is compared with the other conventional methods for the reservoir storage calculation， and then its accuracy and reliability are demonstrated as well. Moreover， various errors possibly occurred in the application of GPS-CORS network combined with digital echo sounder to the reservoir storage survey and their impacts on the plane and height error precisions are analyzed herein， furthermore， the error analysis model for the relevant surveying data is also discussed. Through the verification from the actual storage survey of Yaoqiaoyu Reservoir， the feasibility and advantage of the application of this method to the reservoir storage survey are demonstrated.