云南万家口子水电站高边坡无黏结预应力锚索施工  

Construction of Unbonded Prestress Anchorage Cable on High Slope of Wanjiakouzi Hydropower Station in Yunnan Province

作　　者：韦兵生 WEI Bingsheng(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,广西南宁530001

出　　处：《红水河》2020年第3期101-104,108,共5页Hongshui River

摘　　要：云南万家口子水电站左右岸坝基岩石破碎,裂隙发育,夹有破碎带及软弱夹层,并发育有F201及F101两条断层,地质条件复杂。文章结合云南万家口子水电站水垫塘边坡预应力锚索支护施工,介绍在复杂地质条件下的预应力锚索施工技术,针对施工中遇到的如锚索钻孔易塌孔、难成孔等难题,采取了高压固壁灌浆等相关应对措施,对传统岩锚施工工艺进行改进,使难题得以破解,保证了锚索的施工质量,同时,缩短了工期,节约了成本。The dam foundation on the left and right banks of Wanjiakouzi Hydropower Station in Yunnan Province has broken rocks,developed fissures,mixed with broken zones and weak intercalated layers,and developed F201 and F101 faults,with complex geological conditions.This paper introduces the construction technology of prestress anchorage cable under complex geological conditions,combining with the construction of prestress anchorage cable for the cushion pool slope of Wanjiakouzi Hydropower Station in Yunnan Province.In view of the problems encountered in the construction,such as easy hole collapse and difficult hole formation of anchor cable drilling,the high-pressure slurry wall grouting and other relevant countermeasures are taken to improve the traditional rock anchor construction technology,so as to solve the problems,ensure the construction quality of anchor cable,at the same time,shorten the construction period and save the cost.

关 键 词：预应力锚索 水垫塘 高边坡 万家口子水电站 

分 类 号：TV546[水利工程—水利水电工程]