碾盘山水利水电枢纽工程采用BIM技术开展正向协同设计，建立了项目级BIM应用标准，探索研究各专业三维协同设计流程。在基于BIM技术的三维协同设计架构内，通过结构参数化设计、碰撞检测、仿真模拟、4D施工模拟、三维技术交底等展示了设计阶段BIM主要应用点。通过创新尝试实现了无人机正摄影像叠加BIM模型核验工程关键信息，利用Dynamo可视化编程开发了桩基自动布置和混凝土结构三维快速配筋工具，打造了WEB端BIM+GIS管理平台为设计和工程管理提供数据信息服务。实践表明，BIM技术为碾盘山水利水电枢纽工程的建设提供了全面、有效的帮助，提高了设计效率，提升了设计质量，为BIM技术在水利水电工程中的应用做了一个良好的示范。

Nianpanshan water conservancy and hydropower project adopts BIM Technology to carry out forward collaborative design， establishes project level BIM application standards， and explores and studies the three-dimensional collaborative design process of various disciplines. In the three-dimensional collaborative design framework based on BIM Technology， the main application points of Bim in the design stage are displayed through structural parametric design， collision detection， equipment operation simulation， simulation calculation， 4D construction simulation and three-dimensional technical disclosure. Through innovative attempts， we have realized the verification of key information of the project by superimposing BIM model with UAV forward photography， developed the automatic layout of pile foundation and three-dimensional rapid reinforcement tool of concrete structure by using dynamo visual programming， and built a web BIM + GIS management platform to provide data information services for design and Engineering Management. The practice shows that BIM Technology provides comprehensive and effective help for the construction of Nianpanshan water conservancy and hydropower project， improves the design efficiency and design quality， and makes a good demonstration for the application of BIM Technology in water conservancy and hydropower projects.