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奇尔克伊水电站位于格鲁吉亚北高加索苏拉克河上,大坝为混凝土双曲拱坝,最大坝高232.5m。坝址地处狭窄的“V”形河谷,两岸陡峭,近于垂直。坝址基岩主要为上白垩纪片状薄层碳岩,岩性坚硬,微向上游倾斜偏右岸,夹有薄层致密坚硬的泥灰岩、泥灰质和泥质粘土,两岸构造裂隙和卸荷裂隙发育,与泥化夹层组合构成潜在的不稳定岩体。介绍了在基坑岸坡加固过程中采用新型锚固结构的设计及施工经验。
Chilkay hydropower station is located in the North Caucasus Surak River in Georgia, the dam is a concrete double curvature arch dam, the maximum dam height 232.5m. Dam site is located in a narrow “V ” shaped valley, both sides of the steep, near vertical. The bedrock of the damsite is mainly composed of upper Cretaceous lamellar thin carbonaceous rocks with hard lithology and slightly tilted to the right bank to the upstream. There are thin, dense and hard marls, marls and clay clays, Charge-bearing fractures develop and combine with muddy intercalations to form potentially unstable rocks. The design and construction experience of using new type of anchorage structure in the reinforcement of foundation pit slope are introduced.