关键词: 基础处理, 蚀变岩, 地下厂房, 琅琊山抽水蓄能电站

Abstract: Steep dip thin limestone and granodiorite alteration zone were developed as the foundation of underground powerhouse at Langyashan pumped storage power station. The alteration zones distributed randomly and argillation as well as disintegration would occur as contact of water. Aiming at heterogeneous rock foundation with limestone and granodiorite alteration zone, the method of whole rigidity box structure was adopted to solve the problem of insufficient carrying capacity and uneven settlement of the foundation. The result showed that it was of good effect and worthy reference.

Key words: foundation treatment, alteration zones, underground powerhouse, Langyashan pumped storage power station