单孔反稀释模型理论与试验研究  

Theoretical and Experimental Study of Anti-dilution Model of Single Hole

作　　者：陈亮[1,2] 何健健[1,2] 高为壮 李月奇[1,2] 姚斌斌[1,2] Chen Liang He Jianjian Gao Weizhuang Li Yueqil Yao Binbin(Key Laboratory of Ministry of Education for Geomechanics ＆ Embankment Engineering, Hohai Univ. ,Nanjing 210098, China Jiangsu Research Center for Geotechnical Engineering Technology, Hohai Univ. , Nanjing 210098, China)

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,南京210098 [2]河海大学江苏省岩土工程技术工程研究中心,南京210098

出　　处：《三峡大学学报（自然科学版）》2017年第5期63-68,共6页Journal of China Three Gorges University：Natural Sciences

基　　金：江苏省自然科学基金面上项目(BK20151495)

摘　　要：针对前人在反稀释模型公式推导过程中的不足,将反稀释模型和渗流场畸变理论相结合,重新推导了反稀释模型相关公式,在推导过程中仔细区分孔水流速、含水层达西流速等相关量的差异,有助于消除误解.采用自主设计的试验装置,利用两种不同粒径的均匀砂,在不同水头差下对反稀释模型进行室内试验验证,对由土层不均性产生的误差,采用流速二次修正参数较好地消除了该误差,试验结果表明反稀释模型是正确的.将模型应用于含水层达西流速的计算,计算得到的模型值与试验值相差不大.First of all, in order to eliminate the deficiencies in the previous derivation process of anti-dilution model, combining the anti-dilution model with the seepage field distortion theory to re-derived the ant-dilution model and distinguished the hole water＇s velocity with the aquifer＇s Darcy velocity carefully during the deriva- tion process. Secondly, laboratory tests are carried out to verify the model using the self-designed experimen- tal device. For the errors caused by soil heterogeneity, the second amendment parameter of velocity which can eliminate the errors is carried out. After eliminating the errors, the results from the anti-dilution indoor test show that the anti-dilution model is correct. Finally, the model is used to calculate the soil＇s Darcy velocity; and the model values of soil＇s Darcy velocity are close to its experimental values.

关 键 词：反稀释模型 理论推导 验证试验 电导率 渗流速度 

分 类 号：TU411.99[建筑科学—岩土工程]