构皮滩水电站导流隧洞设计

构皮滩水电站是乌江上最大的水电站,采用围堰全年挡水,导流隧洞泄流的施工导流方案.导流隧洞共有3条,按左2右1分两岸布置,过流断面均为15.6 m×17.7 m的马蹄形.构皮滩导流隧洞沿线地质条件复杂,既存在众多的地下岩溶系统,同时每条洞又要穿过长达100多米的韩家店软岩段.在地质条件如此复杂的岩溶地区实施大洞径的导流隧洞的设计和施工,对设计思想和施工技术提出了更高的要求.介绍了构皮滩导流隧洞的设计和施工.

Arch dam layout and optimization of Goupitan hydropower station

Goupitan arch dam is 232.5 m high with multiple large orifices, the geologic condition of dam foundation is complicated. The arch dam scale and techni cal difficulty are beyond the arch dam design standard currently in effect. Using the abroad and domestic arch dam design experience and most up-to-date scienti fic research achievement for reference, adopting various analysis methods and model tests and comparing with the similar project, the researches on the arch dam configuration, stress, dam abutment stability, anti-quake and foundation treatment of Goup itan project were carried out, and in the light of concrete condition of the project, the dam is optimized properly, realizing the project design objectives of safety and reliability, technical feasibility, economic rationality.