乌东德大坝右坝肩K25岩溶斜井运行性态分析OA
Analysis on Operation Behavior of K25 Karst Inclined Shaft in the Right Abutment of Wudongde Dam
乌东德水电站大坝右坝肩发育有天然 K25 巨型岩溶斜井,为改善拱端传力效果同时提高坝体-地基系统的整体安全度,采用对坝顶高程 988 m 以下充填物全部挖除后回填 RCC并辅以固结灌浆的工程处理措施.经过治理后监测数据显示:穹顶及洞周岩体深部变形及支护锚杆应力较小,回填混凝土主要受压,与围岩结合紧密,混凝土温度已降至稳定状态,洞周围岩基本无渗压水作用,各项监测指标正常,岩溶斜井治理效果良好.
The right abutment shoulder of the Wudongde Hydropower Station dam features a natural K25 giant karst shaft.In order to improve the arch-end stress transmission effect and enhance the overall safety of the dam-foundation system,engineering measures were adopted to excavate and backfill with Roller Compacted Concrete(RCC)below the dam crest elevation of 988 meters,supplemented by grouting consolidation.Monitoring data after the treatment showed that the deep deformation of the dome and surrounding rock mass,as well as the stress on the support anchors,were minimal.The backfilled concrete was primarily under compression,tightly integrated with the surrounding rock,and its temperature had stabilized.There was no significant seepage pressure around the shaft,and all monitoring indicators were normal.The treatment effect of the karst shaft was excellent.
朱宝强;韩继宗;郭金龙;陈宇龙
中国电建集团贵阳勘测设计研究院有限公司,贵州 贵阳 550081中国电建集团贵阳勘测设计研究院有限公司,贵州 贵阳 550081中国电建集团贵阳勘测设计研究院有限公司,贵州 贵阳 550081中国电建集团贵阳勘测设计研究院有限公司,贵州 贵阳 550081
建筑与水利
K25岩溶斜井运行性态安全监测
K25 karst inclined shaftoperation behaviorsafety monitoring
《云南水力发电》 2026 (7)
42-45,4
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