彭水电站的设计亮点和施工难点

Highlights in design of Pengshui Hydropower Station and difficulties in construction

彭水电站坝址地处"V"形峡谷河道,地基岩溶发育,洪水量大、峰高,水位变幅大。针对工程自然条件,对工程布置和建筑物进行了精心设计,如弧形碾压混凝土重力坝、全表孔泄洪、地下厂房纵轴向平行地层走向布置、变顶高尾水洞、组合式通航建筑物等。面对施工现场不断变化的情况,设计适时应变,不断优化建筑物设计,并相应地调整施工计划,促使工程迎难而进,在施工过程并不尽如人意的情况下,仍如期实现了工程总体目标。电站的设计特点、施工难度和快速施工等经验,可供同类工程借鉴参考。

The dam site of Pengshui Hydropower Station is located at a V-shape valley where is characterized by well-developed karst,large flood volume with high peak and high fluctuation of water levels.In the light of the natural condition,the project was meticulously designed for the layout and all structures such as RCC gravity dam,flood discharge wholly by surface sluices,longitudinal axis of the underground power house parallel to strata,inclined roof tailrace tunnel,combined navigation structures,etc.Moreover,according to continuously varying conditions of the construction site,the design scheme and the construction plan have been adjusted and optimized correspondingly,and the general goal of project has been successfully achieved.