浅谈下坂地坝基廊道沉降变形及渗水处理

Discussion on subsidence deformation and seepage treatment of Xiabandi dam foundation corridor

下坂地水库初期蓄水运行至2915m高程时,坝基廊道右岸施工缝变形增大并出现滴水现象。为保证水库正常蓄水及运行安全,采取帷幕补强灌浆、混凝土衬砌及挤密注浆桩等方式进行加固,有效地控制了渗漏量和变形缝的扩展,成效显著。处理措施可为类似工程提供借鉴。

Initial water storage of Xiabandi reservoir is operated to 2915m elevation. The dam foundation corridor right bank construction joint deformation is increased, and dripping phenomenon appears. Curtain reinforcement grouting, concrete lining, compaction grouting pile and other modes are adopted for reinforcement in order to ensure the safety of reservoir normal impoundment and operation, thereby effectively controlling the leakage and deformation crack extension with fruitful achievements. Treatment measures can provide reference for similar projects.