堤坝渗漏广义示踪法室内试验研究  

Experimental study on generalized tracing method for dam leakage

作　　者：姚斌斌[1,2] 陈亮[1,2] 李月奇[1,2] 高为壮[1,2] 何健健 

机构地区：[1]河海大学岩土力学与堤坝工程教育部重点实验室,江苏南京210098 [2]河海大学江苏省岩土工程技术工程研究中心,江苏南京210098

出　　处：《河北工程大学学报（自然科学版）》2017年第2期43-49,共7页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：江苏省自然科学基金资助项目(20155024511);南京水利科学研究院开放基金资助项目(20155005712)

摘　　要：以堤坝填筑材料中常见细砂、中砂、粗砂为试验材料,以食盐溶液为示踪剂,通过测试各材料中示踪剂电导率随时间的变化规律,计算其渗透水平流速。经试验传统点稀释公式计算得出的渗透水平流速在各砂层中对比流量法测试得到的流速偏大,在同一砂样不同水力梯度下两流速比值基本为一恒定值,而在不同砂层中比值不尽相同。对原点稀释计算公式进行了修正,并给出了修正系数实验值。With laboratory testing rig and testing program designed, the fine sand, medium sand and coarse sand are chosen as test material respectively, and the salt solution is chosen as tracer agent, then the seepage velocity is calculated through the relationship between the conductivity of tracer agent in different test material and time. The value of seepage velocity calculated through traditional dilution formula in all sand layers is a little larger than that by testing discharge method. The specific value of them is constant in the same hydraulic gradient, while it is imparity in different sand layers. The dilute tracer correction coefficient is proposed as well as the modified dilution formula, meanwhile the experimental value of dilute tracer correction coefficient is given.

关 键 词：堤坝渗漏 流速测试 示踪法 稀释公式 水头差 

分 类 号：TV223.4[水利工程—水工结构工程]