1号尾水隧洞开挖支护施工

Excavation and Support Construction of No.1 Tailrace Tunnel for Dachaoshan Hydropower Station

文章对 1号尾水隧洞转弯段、主洞、岔管、支洞、出口段、竖井的开挖和喷锚支护施工及对质量。