新疆大石门水利枢纽建筑物工程布置及关键技术

Layout of Dashimen Dam structures and key technologies in Xinjiang Uygur Autonomous Region

新疆大石门水利枢纽工程抗震设计烈度为Ⅷ度,地震峰值加速度为0.26 g,是我国目前已建和在建水利工程中抗震设防烈度最大、坝高最大的沥青混凝土心墙坝。工程位于高地震区,地质条件复杂,建筑物布置紧凑,有目前国内最深的200余m纯帷幕灌浆古河槽深厚覆盖层防渗处理。系统介绍了该工程枢纽建筑物设计原则及工程布置、防渗处理等关键问题的设计思路。

With a designed seismic intensity of grade Ⅷ and seismic peak acceleration of 0.26 g, Dashimen Multi-purpose Project in Xinjiang has the highest asphaltic concrete core dam and largest seismic fortification intensity among the current constructed and under-constructed dams in China. The dam is located in the seismic area where has complicated engineering geological conditions and compactly distributed buildings. It has compact layout and about 200 m of pure curtain grouting old channel deep and thick overburden, which is the deepest in China at present. Systematically introductions are made on the design principles and structure layout, as well as key technologies for seepage prevention.