万家口子水电站高拱坝复杂地质地形坝基开挖技术  

Excavation Technology of High Arch Dam Foundation in Complex Geological Terrain of Wanjiakouzi Hydropower Station

作　　者：罗雄兵 LUO Xiongbing(China Energy Engineering Group Guangxi Hydroelectric Construction Bureau Co.Ltd.,Nanning Guangxi 530001)

机构地区：[1]中国能源建设集团广西水电工程局有限公司

出　　处：《红水河》2020年第1期93-98,共6页Hongshui River

摘　　要：针对万家口子水电站坝基开挖边坡陡、高差大、场地窄等情况,施工单位在施工前对开挖出碴道路、分层分区等进行了优化布置,施工中采用预裂爆破、梯段微差爆破等技术,以及边开挖边支护等措施,合理组织人力和设备进行有序施工,保证了坝基边坡的稳定和坝基开挖的进度和质量,满足了工程建设的需要。In view of the steep slope,large height difference and narrow site of Wanjiakouzi Hydropower Station dam foundation excavation,the construction unit has optimized the layout of excavation and mucking road,layered and zoned areas before construction.During the construction,technologies such as presplit blasting,bench millisecond blasting,and measures such as excavation and support are adopted,and the reasonable organization of manpower and equipment for orderly construction ensures the stability of dam foundation slope and the progress and quality of dam foundation excavation meet the needs of engineering construction.

关 键 词：坝基 开挖 出碴 边坡 支护 万家口子水电站 

分 类 号：TU753.1[建筑科学—建筑技术科学]