摘要
四川省新津县岷江董河坝拦河闸工程基岩中含有石膏等易溶物质,对工程的安全有较大影响。通过钻孔取芯和孔内电视录像等技术手段,查清了石膏层的分布高程和范围,分析了溶蚀渗透特性。经分析研究认为,可以采取在基岩上开凿深齿槽,并在齿槽下采用灌浆帷幕的处理措施防止闸基渗漏,同时在基础溶蚀层中采用防硫酸盐水泥,提高抗腐蚀性,达到保证拦河闸安全的目的。
The bedrock of Dongheba Sluice on the Minjiang River in Xinjin County of Sichuan Province contains soluble substances such as gypsum that has greater influence on the safety of the project. By the means of borehole drilling and TV imaging, the distribution of gypsum was analyzed and the distribution elevation and range of gypsum layers, the seepage characteristics of solution channels were founded out. According to analysis results, it is considered that by the means of cutting deep trenches in bedrock and arranging grouting curtains under the trenches to prevent seepage of sluice foundation, together with sulfate cement in karst layer of foundation improving the anti - erosion, the safety of the sluice can be guaranteed.
出处
《人民长江》
北大核心
2013年第6期26-28,共3页
Yangtze River
关键词
石膏层
溶蚀
渗漏分析
处理措施
拦河闸
岷江
gypsum
solution
seepage analysis
treatment measure
sluice
Minjiang River
作者简介
易志伟，男，工程师，主要从事水利水电工程地质勘察工作。E—mail：34362974@qq．com
