不均匀系数Cu≤5的无黏性土的渗透变形类型统计分析研究

doi:10.13722/j.cnki.jrme.2014.12.022

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Abstract The seepage deformation of soil dam(foundation) is a main cause of dam burst and failure，it is therefore necessary to study the seepage deformation of dam(foundation) soil and its types. The data of 472 tests of seepage deformation on noncohesive soil(crushed gravel soil and sandy soil) from 48 projects were collected and statistical analysis was made. The results show that the seepage deformation type of crushed gravel soil is piping；and the type of seepage deformation of sandy soil is soil shifting(flow). Further analysis is made on the distribution curve of grain sizes of the noncohesive soil with Cu≤5 and the seepage deformation type of crushed gravel soil with Cu≤5 was found to be piping.

Key words： soil mechanics noncohesive soil seepage deformation type soil flow piping nonuniformity coefficient

Received: 17 September 2014

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.12.022 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/I12/2554

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