糯扎渡水电站枢纽工程主要技术创新与实践

Main Technical Innovations and Practices in the Design of Nuozhadu Hydropower Station Project

糯扎渡水电站枢纽工程掺砾土心墙堆石坝最大坝高261.5 m,地下厂房开挖尺寸418 m×29 m×81.6 m,装机9×650 MW,溢洪道最大下泄流量(PMF时)31 318 m3/s。该工程高心墙堆石坝设计、泄水建筑物设计、引水系统及地下厂房设计、导截流工程设计、安全监测设计等有诸多工程技术创新。在工程设计的各阶段开展了大量的研究工作,取得了丰硕的有价值的成果,并应用于工程实践,为工程建设提供了先进的技术保障。

The gravelly soil core rockfill dam of Nuozadu Hydropower Station Project is 261.5 meters high, in which, the core wall is constructed by natural clay soil mixed with artificial gravel. The station installs 9 hydro-generators with a unit capacity of 650 MW in underground powerhouse which has an excavation size of 418 mx29 mx81.6 m. The maximum discharge of spillway is 31 318 m3/s under the condition of Probable Maximum Flood. Many technical innovations are applied in the designs of core roekfill dam, flood discharge structures, water diversion system and underground powerhouse, river diversion and closure, and safety monitoring. A large amount of researches are carried out in all stages of engineering design, and abundant and valuable research results are used in engineering practice and provide advanced technical supports to guarantee the construction of Project.