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一、前言水电站樞紐的施工,是在改变河流的自然情况下进行,是要束縮或攔断河床而最后將河水引入施工洩水道;同时,在施工期間又必須保持下游其他經济部门的用水。因此,施工导流是在水电站設計与施工中关系着工程成敗的一个主要問题。施工导流設計,不論对施工、設計或樞紐布置,以及对水工建筑物型式的选擇都有密切关系掳步缯局饕そㄖ镂亓Π映Х慷ヒ缌魇?最大高度达120公尺,需要有良好的基础,但因地質条件較差,施工时首先得將河床沉积物清除,再在岩石基础上开挖(深度8～30公尺,在認为可以作为坝基的岩石下还需进行鑽孔灌
I. INTRODUCTION The construction of hydropower hubs is carried out under the natural conditions of changing rivers. It is to shrink or block the riverbed and finally to introduce the river into the construction drainage channel. At the same time, it is necessary to maintain the water supply of other economic sectors in the downstream during construction. Therefore, the construction diversion is a major issue that affects the success or failure of the project in the design and construction of hydropower stations. Construction diversion design, regardless of the construction, design or hub layout, as well as the selection of hydraulic structures are closely related 掳 步 步 步 そ ㄖ Lou 亓 Π reflect Х generous ヒ 缌Nightmare? The maximum height of 120 meters, need to have a good foundation, but because of poor geological conditions, the first riverbed sediment to be cleared of construction, and then excavation on the basis of rock (depth of 8 to 30 meters, As the foundation of the rock under the need to carry out irrigation