响洪甸抽水蓄能电站发电隧洞集碴坑施工中 ,根据工程特性 ,采用了预应力锚索技术处理 ,并根据其具体情况 ,制定了相应的施工方案和施工技术措施 .开挖施工和岩塞爆破检验表明 ,预应力锚索施工获得成功 ,对集碴坑边墙和顶拱的整体性起到了很好的加固作用 ,对今后类似工程进行预应力锚索施工提供了经验 According to engineering characteristics, prestressed anchor cable technology is applied to deal with the construction of ballast pit for power generation tunnel of Hongdadian Pumped Storage Power Station, and the corresponding construction scheme and construction technical measures are formulated according to the specific conditions. Plug burst test shows that the construction of prestressed anchor cable has been successful and has a good reinforcement effect on the integrity of the side wall and roof arch of ballast pit, providing experience for prestressed anchor cable construction in similar projects in the future