泉水坝是双曲薄拱坝,坝址区河谷狭窄,呈“V”字形,两岸山坡陡峻,尤其紧靠坝址下游,两岸山坡向河心围拢。最大坝高80m,坝顶长209m,坝底厚9m,坝顶厚3m,厚高比为0.112,宽高比为2.61.外拱圈为单心圆弧,而内拱圈是一个断面向拱座逐渐加厚的三心圆弧,其中心角从80°到100°。由图1可见坝体以竖向伸缩缝分隔为11个坝段。大坝于 Spring dam is a hyperbolic thin arch dam, dam site narrow valley, was “V” -shaped, steep slopes on both sides, especially close to the dam site downstream, the two sides of the hillside surrounded by the heart of the river. The maximum dam height is 80m, the crest length is 209m, the dam bottom thickness is 9m, the crest thickness is 3m, the height-height ratio is 0.112 and the aspect ratio is 2.61. The outer arch ring is a single heart arc, while the inner arch ring is a cross-section arch Gradually thickened three center arc, the central angle from 80 ° to 100 °. It can be seen from Figure 1 that the dam body is divided into eleven dam segments by vertical expansion joints. Dam at