小湾水电站建设中的几个技术难题

Key technical problems of Xiaowan hydropower project construction

小湾水电站混凝土双曲拱坝是即将建成的世界最高拱坝,许多技术难题当属世界第一,工程建设极具挑战性.结合对关键技术的研究实践与认识,介绍了工程建设中遇到并成功攻克的多项主要技术难题,如:700 m高工程边坡处理、坝基岩体开挖卸荷松驰、拱坝混凝土温控防裂、泄洪消能及雾化研究、拱坝抗震安全等.

The Xiaowan hydropower project double-curvature arch darn under construction is becoming the highest arch dam in the world. A lot of technical problems solved during construction must be world problems, and the project construction is a real challenge. According to research practice and understanding of key technology of hydropower engineering, main technical problems, such as construction treatment of high steep slopes of 700 meters, unload relaxation caused by rock excavation in the dam foundations, temperature control against cracks in the concrete arch dam, researches on flood discharge and energy dissipation as well as automization, and arch dam safety against earthquake, are tackled by the author in the study.