摘要
针对深覆盖层上面板堆石坝的防渗系统变形较大问题,提出对防渗墙后侧一定范围内地基进行旋喷加固处理,并对不同的旋喷加固参数及加固范围设定了不同的加固方案,采用有限元数值分析法就不同旋喷加固方案对大坝防渗系统变形性状的影响进行了技术论证。计算结果表明,防渗墙后侧设置一定范围的旋喷加固区能有效地改善由混凝土面板、趾板、连接板和防渗墙组成的防渗系统的变形,面板缝、周边缝及其他接缝的三向位移变形也有所减小。
Aiming at the large delormatlon problem oI concrete face rockfill dam constructed on the deep overburden,the application o~ rotary iet grouting m foundation is put ,u rameters and range setting, different reinforcement schemes are designed. The impacts of different schemes on the de- formation of the dam anti-seepage system are studied by using finite element numerical analysis. The study results show that setting up jetting reinforcement area in the rear of cut-off wall can effectively improve the deformation characters of seepage prevention system which was composed by concrete face plate, toe slab, connecting slab and cut-off wall and de- crease three-direction displacement between face plate cracks and contact ioints.
出处
《水电能源科学》
北大核心
2013年第10期70-73,共4页
Water Resources and Power
基金
国家自然科学基金资助项目(51139001)
新世纪优秀人才支持计划基金资助项目(NCET-11-0628)
河海大学水文水资源与水利工程科学国家重点实验室专项基金资助项目(2010585212)
中央高校基本科研业务费基金资助项目(2012B07214)
