董箐水电站设计创新技术与应用

贵州北盘江董箐水电站是“西电东送”的重要电源项目，被贵州省列为“抢救性”开发的重点工程。在勘测设计周期有限的情况下，还存在“高坝，软硬岩、大泄量、高尾水变幅”等较复杂的工程技术问题，通过“软硬岩料筑坝及其变形控制、高水头大泄量泄洪消能安全控制、高尾水变幅发电厂设计、高坝施工水流安全控制”等设计技术创新和20余项新技术的应用，解决了制约工程建设的多项技术难题，取得了质量高、进度快、投资省的良好效果，社会经济效益显著，可供有关类似工程借鉴和参考。

Innovative technologies for design Dongqing Hydropower Station and their applications

Dongqing Hydropower Station on Beipanjiang River in Guizhou Province is an important power source for the West-East Power Transmission Project and listed as a key development project of “salvaging” in the province. Under a condition of limited investigation and design period with some complicated technical problems such as high dam, soft-hard rock, larger discharge, high variable amplitude of tail-water, etc., several problems those restricting the project construction are solved through the applications of the design innovations and over 20 new technologies, i.e. dam construction with soft-hard rock material and its deformation control, safety control of dissipation for flood discharge under high-head and large discharge, design of powerhouse with high variable amplitude of tail-water, flow safety control during construction of high dam, etc., and then a better construction target of high construction quality, quick construction progress and saved investment for the project is got with a significant social and economic benefit; which can provide a reference for the similar project concerned.