EIGEN-6C4重力场模型在大高差抽水蓄能电站高程测量中的应用  

Application of EIGEN-6C4 Gravity Field Model in Elevation Measurement of Pumped Storage Power Station with Large Elevation Difference

作　　者：王明[1] 李祖锋[1] 李贾亮 WANG Ming;LI Zufeng;LI Jialiang(PowerChina Northwest Engineering Corporation Limited,Xi'an 710065,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065

出　　处：《西北水电》2023年第4期54-57,共4页Northwest Hydropower

基　　金：中国电建集团西北勘测设计研究院有限公司科技项目(XBY-KJ-2019-06).

摘　　要：随着中国清洁能源的大规模开发,抽水蓄能电站得到了快速发展,与传统水电站相比,抽水蓄能电站的水头较高,多为200~800 m。然而,在西部山区等条件恶劣的地区,高程测量手段实施难度极大,且效率低下。根据西北地区多个抽水蓄能电站及常规水电站高程测量成果,利用EGM2008、EIGEN-6C4地球重力场模型对各个电站高程控制测量成果进行拟合计算,并与常规测量成果进行比较。数据表明:EIGEN-6C4地球重力场模型拟合成果具有更好的符合性,尤其是在后期施工控制网高程成果的拟合方面,EIGEN-6C4模型拟合成果更优。因此,该方法可以在保证勘测设计阶段高程控制测量成果精度的同时,降低风险和成本,节约工期,在大高差地形区域具有较高的适用性。With the large-scale development of clean energy in China,the pumped storage power station has developed rapidly.Compared with the traditional hydropower station,the water head of the pumped storage power station is higher,mostly 200~800 m.However,in areas with harsh conditions such as the western mountainous areas,the implementation of elevation measurement methods is extremely difficult and inefficient.Combined with the elevation measurement results of multiple pumped storage power stations and conventional hydropower stations in Northwest China,the EGM2008 and EIGEN-6C4 earth gravity field models are used to perform fitting calculations on the elevation control measurement results of each power station,and compare them with the conventional measurement results.The data show that the fitting results of the EIGEN-6C4 Earth's gravity field model have better conformity,especially in the fitting of the elevation results of the construction site control network.Therefore,this application can reduce risks and costs while ensuring the accuracy of elevation control measurement results in the survey and design stage,and save construction time.It has high applicability in areas with large elevation differences.

关 键 词：高程拟合 大高差 重力场模型 EIGEN-6C4 

分 类 号：P228.4[天文地球—大地测量学与测量工程] TV221[天文地球—测绘科学与技术]