强震区高拱坝复杂地层基础处理关键技术  

Key Technology for Foundation Treatment of High Arch Dam in Complex Stratum in Strong Earthquake Area

作　　者：谢文璐 XIE Wenlu(China Gezhouba Group Municipal Engineering Co.,Ltd.,Yichang,Hubei,443000,China)

机构地区：[1]中国葛洲坝集团市政工程有限公司,湖北宜昌443002

出　　处：《建筑工程与管理》2021年第3期22-24,共3页Architecture Engineering and Management

摘　　要：辉绿岩脉遇水泥化,如果不处理好,可能在坝基形成渗漏通道,甚至影响到电站整体的安全稳定。根据目前国内外相关研究成果,对于辉绿岩加固处理的研究还十分有限,相关文献试验结果显示,III2类以上的辉绿岩脉通过水泥灌浆基本能够满足设计要求,III2类及以下辉绿岩脉水泥灌浆难以满足设计要求,需要进行化学灌浆,如果都采取化学灌浆,工程投资将十分巨大,通过对辉绿岩脉处理方案开展系统性的研究,提出了深部置换网格+网格间加密固结灌浆+浅表混凝土置换+坝基全面固结灌浆+水泥化学复合灌浆等综合处理措施,有效解决了工程难题,取得了较好的经济效益。If the diabase vein is cemented,if it is not treated properly,it may form a leakage channel in the dam foundation and even affect the overall safety and stability of the power station.According to the relevant research results at home and abroad,the research on the reinforcement of diabase is still very limited.The test results of relevant literature show that the cement grouting of diabase dikes above III2 can basically meet the design requirements and the cement grouting of diabase dikes below III2 can not meet the design requirements,so chemical grouting is needed,The project investment will be huge.Based on the systematic study of diabase dike treatment scheme,the comprehensive treatment measures such as deep replacement grid,consolidation grouting between grids,superficial concrete replacement,comprehensive consolidation grouting of dam foundation,cement chemical composite grouting are proposed,which effectively solve the engineering problems and achieve better economic benefits.

关 键 词：强震区 高拱坝 辉绿岩脉 深部置换网格 网格间加密固结灌浆 水泥化学复合灌浆 

分 类 号：TV642.4[水利工程—水利水电工程]