摘要
深厚砂卵砾石层堤防渗水以至出现流沙、管涌等破坏的现象较为普遍,如何经济有效地进行处理是当前的一个工程难题。结合龙家山狮江防护堤工程实例,通过勘钻探物探确定主要渗漏区域;综合国内外现有多种灌浆技术优点,研究提出“高压脉动钻灌一体”施工新技术并实施,通过钻孔取芯检测、压水试验、声波测试进行质量检查;采用渗流三维数值分析对治理成果进行验证。实践证明,新技术成功解决了防护堤深厚砂卵砾石层渗漏问题。
It is a common phenomenon that the embankment founded on deep sand gravel layer appears water leakage or damaged by quicksand and piping,so how to deal with it economically and effectively is an engineering problem at present.Combined with the engineering example of Shijiang Protection Embankment in Longjiashan Hydropower Station,the main leakage areas of embankment founded on deep sand and gravel layer are firstly determined by geophysical exploration,then a new construction technology of“Integrated high-pressure pulsating drilling and grouting”which is developed on the comprehensive study on domestic and international existing grouting technologies is used to treat the leakage and the construction quality is checked by core sampling test,water pressure test and sound wave test,and finally,the three-dimensional numerical analysis of seepage is used to verify the leakage treatment results.The practice has proved that the new technology has successfully solved the leakage problem of protection embankment founded on deep sand gravel layer.
作者
樊勇
杨松林
袁会林
李永丰
FAN Yong;YANG Songlin;YUAN Huilin;LI Yongfeng(Hunan Wuling Power Technology Co.,Ltd.,Changsha 410004,Hunan,China;Hunan Zhongnan Hydropower&Water Resources Construction Co.,Ltd.,Changsha 410014,Hunan,China)
出处
《水力发电》
北大核心
2019年第9期114-119,139,共7页
Water Power
关键词
堤防
渗漏
伪随机流场法
三维数值分析
狮江防护堤
embankment
leakage
pseudo-random flow field method
three dimensional numerical analysis
Shijiang Protection Embankment
