复杂地质条件下大型地下厂房系统施工  

Construction of Large-scale Underground Powerhouse System under Complex Geological Conditions

作　　者：邢磊 史永方 吴书艳 XING Lei;SHI Yongfang;WU Shuyan(Jiangsu Guoxin Liyang Pumped Storage Power Generating Co.,Ltd.,Liyang 213334,Jiangsu,China)

机构地区：[1]江苏国信溧阳抽水蓄能发电有限公司,江苏溧阳213334

出　　处：《水力发电》2018年第10期27-29,共3页Water Power

摘　　要：溧阳抽水蓄能电站地质条件复杂,地下水丰富,围岩类别以Ⅳ、Ⅴ类为主,开挖后洞室自身稳定性差,确保地下洞室围岩安全稳定是开挖支护的难点。地下厂房系统施工开挖遵循"超前地质预报、超前排水、超前支护、先边后中、先软后硬、先洞后墙、薄层开挖、随层支护、加强观测"的原则,整个地下系统施工过程中未发生一起较大规模的塌方事故,有效地保证了施工安全、质量、进度。As complex geological conditions, rich groundwater and Class IV and V surrounding rock, the stability of excavated caverns in Liyang Pumped-storage Power Station is poor. The security and stability of surrounding rock of underground caverns is a key problem for excavation supporting. The excavation of underground powerhouse system follows the principles of ＂In- advance geological forecast, in-advance drainage, in-advance supporting, excavating the rock on the side first and then the rock in middle, excavating soft rock first and then hard rock, excavating caverns first and then walls, excavating thin-layer, supporting layer-by-layer, and strengthening monitoring＂. There is no larger scale landslide accident occurred during the construction process of whole underground system, and the construction safety, quality and progress are effectively ensured.

关 键 词：复杂地质条件 地下厂房系统 开挖 支护 溧阳抽水蓄能电站 

分 类 号：TV731.6[水利工程—水利水电工程]