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一、上静水坝坝址上静水坝(Upper Stillwater Dam)是一座直线碾压混凝土重力坝.坝址位于犹他州盐湖城东南约193公里处的犹因特山区的岩溪河上.坝高约84米,坝顶长814米.上游坝面呈垂直,下游属变坡面:从坝顶算起,上面的23米坡度为0.32∶1,23米以下为0.6∶1.碾压混凝土方量预计107万立米. 岩溪河因水流与冰川作用,河谷宽阔平坦,两岸边坡陡峭.坝基地质为中到厚层石英砂岩,两岸为砂岩、泥质板岩与粉砂岩.基岩上面覆盖有3～30多米的表层沉积物,其中有冲积扇,山麓堆积和冰碛物.基岩内有好几条狭窄、陡切的断层,走向呈南北向.
The Upper Stillwater dam The Upper Stillwater Dam is a rectilinear roller compacted concrete gravity dam located on the rocky river in the Jutite Mountain about 193 km southeast of Salt Lake City, Utah. The dam height is about 84 Meters, the crest is 814 meters long, the upper dam surface is vertical and the lower one is a variable slope surface: from the top of the crest, the gradient of the top 23 meters is 0.32:1, 0.6:1 below 23 meters, and the estimated square amount of RCC 1070000 m .Water due to the impact of glaciers and rocky rivers, wide and flat valleys, steep slopes between the two sides of the dam foundation is medium to thick quartz sandstone, sand and shale, mudstone and siltstone on both sides of the bedrock covered with 3 Over 30 meters of surface sediments, including alluvial fans, piedmont deposits and moraines, have several narrow and steep faults in the bedrock, and strike north-south.