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梅山水库连拱坝高达八十余公尺,承受着巨大的水压力,因此要有良好的基础,建筑时首先要将河床淤沙清除,在岩石基础上开挖石槽,以嵌入坝脚,在石槽以下并需钻孔灌浆,总之在河床以下的工程数量是很巨大的。为了创造顺利施工的条件,如何将上游来水引导到下游去,使坝基范围以内的河床涸出,并能保障基坑内的施工,是主体建筑开工前的一件很重要的任务。
Meishan Reservoir arch dam up to more than 80 meters, under tremendous pressure on the water, so have a good foundation, the building must first be cleared of silt in the riverbed, on the basis of rock excavation of the stone slot to embed the dam feet, Below the stone trough and drilling grouting, in short the number of projects below the riverbed is very large. In order to create conditions for smooth construction, it is an important task before the construction of the main building to guide the incoming water to the lower reaches to make the riverbed within the dam foundation dry up and ensure the construction inside the foundation pit.