希腊雅典调水二期工程

Evinos-Mornos Project in Greece

雅典调水二期工程因连续大旱,仓卒上马。黏土心墙坝为引水枢纽中的主要建筑物,坝址调水比例66%～75%,隧洞最大埋深1250m,复理石地层,施工机械既有开敞式TBM,又有双护盾TBM,分别采用现浇钢筋混凝土及单层管片衬砌。人字坡压力输水洞不均匀输水。

The Evinos-Mornos Project was a last minute reaction under the threat of an imminent water shortage. A central clay core earth dam was main building of the water works. Ratio of downstream versus natural annual inflows is 66%- 75%. The main geological formations along the tunnel are fine-grained flysch and the tunnel was realized with both open type TBM and double shield TBM.lined with precast segment and cast in situ concrete lining and with maximum overburden of 1 200 m. For drainage purposes, the tunnel slopes downwards slightly from its center to both portals and conveys water under pressure at variable flow rates.