CAJ | 학술논문

针对近年来李家峡拱坝坝肩及坝基不同廊道渗水析出物较多、大坝廊道底板混凝土表层存在明显的腐蚀破坏现象和地下水硫酸盐侵蚀等问题，在现场探查的基础上，开展坝基混凝土局部腐蚀采集样品性状多手段测试与分析，研究渗流水质作用下坝基混凝土局部腐蚀性状，结合监测资料分析，评价大坝河床坝基安全性态。结论是各坝段坝基渗流变化规律正常，尚未发现异常迹象，坝基工作性态正常。坝基的变形较大，主要是地质条件复杂，坝基变形模量低引起的。
침대근년래리가협공패패견급패기불동랑도삼수석출물교다、대패랑도저판혼응토표층존재명현적부식파배현상화지하수류산염침식등문제，재현장탐사적기출상，개전패기혼응토국부부식채집양품성상다수단측시여분석，연구삼류수질작용하패기혼응토국부부식성상，결합감측자료분석，평개대패하상패기안전성태。결론시각패단패기삼류변화규률정상，상미발현이상적상，패기공작성태정상。패기적변형교대，주요시지질조건복잡，패기변형모량저인기적。
Aiming at much seepage in dam abutment and galleries, corrosion failure and sulphate corrosion from ground water on the sur-face of the floor concrete in the dam galleries.The local corroded concrete of the dam foundation is sampled, tested and analyzed.The corrosion and corrosion performance of the local dam foundation concrete acted by the seepage are studied.In combination with the analy-sis on the monitoring data, the safety of dam foundation on the riverbed is assessed.The study results present that the law of the seepage variation at the dam foundation sections is normal and the dam foundation operates normally.The larger deformation of the dam foundation is mainly caused by the complicated geological conditions and the lower deformation modulus of the dam foundation.