大沙店水文站受牛栏江红石岩堰塞湖整治工程淹没迁建的必要性和可行性分析 Dashadian Hydrological Station by Niulanjiang River Red Rock Quake Lakes in the Course Relocation of Submerged the Necessity and Feasibility Analysis

为满足牛栏江红石岩堰塞湖整治工程建设期间及后期调度运行的需要，使大沙店水文站具备国家大河重要站的设站目的、功能和作用，确保对水量及水情信息的实时监测和掌控，根据堰塞湖水库的正常蓄水位、回水淹没长度、回水淹没上游大沙店水文站的测验断面深度等指标，分析了大沙店水文站迁建的必要性。根据《水文站查勘选址技术规范》要求，通过查勘和分析了红石岩堰塞湖上下游共87.23 km的牛栏江河段，提出了大沙店水文站迁建的六套选址方案，并进行了比选论证。结果表明：大沙店水文站迁建是必要的；陡滩口电站厂房尾水以下至黄角树电站库区尾水区间内的原小河水文站站址满足大沙店站迁建条件，新的监测断面选址是合理的，测站整体迁建也是可行的。 To ensure real-time monitoring and control of water quantity and water information, the necessity of relocation Dashadian hydrological station is analyzed according to the normal storage level of the lake reservoir upstream, flooded backwater length, return water flooded large sand store hydrological station of the test section depth indicator, etc. According to the hydrological station site selection survey technical specification requirements, the relocation plan of six sites is proposed and compared through the survey and analysis of the red rock lake kraal river section upstream and downstream with a total of 87.23 km. The results show that the Dashadian hydrological station site is necessary; the Xiaohe hydrological station site meets requirement. A new monitoring section location is reasonable and the relocation is also feasible.