Origin of pore water pressure gradient in electro-osmosed saturated kaolinite: experimental and theoretical study

机译：电渗饱和高岭土中孔隙水压力梯度的成因：实验和理论研究

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Electro-osmosis refers to the movement of a liquid phase through a solid phase in response to an applied electric field. In this study, focus is laid on pH and pore pressure soatial and time variations in saturated rigid kaolinite samples with freely draining ends under a constant electric current. It is experimentally found that pore pressure gradient can be generated by pH gradient at uniform electric field. This is confirmed through a simple theoretical modelling and physico-chemically dependent transport coefficients. Corresponding numerical calculations allow to capture the main pore pressure profile features.

机译：电渗是指响应于施加的电场，液相通过固相的运动。在这项研究中，重点是在恒定电流下具有自由排放端的饱和硬质高岭石样品的pH和孔隙压力的饱和度和时间变化。实验发现，在均匀电场下，pH梯度会产生孔隙压力梯度。通过简单的理论模型和与物理化学有关的传输系数可以证实这一点。相应的数值计算可以捕获主要的孔隙压力剖面特征。

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来源
《Second Biot Conference on Poromechanics Aug 26-28, 2002 Grenoble, France》|2002年|p.333-338|共6页
会议地点 Grenoble(FR)
作者
K. Beddiar; T. Fen-Chong; Y. Berthaud;
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作者单位

LMT UMR 8535 ENS Cachan/U.Paris VI/CNRS;

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原文格式 PDF
正文语种 eng
中图分类地球物理学;
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Origin of pore water pressure gradient in electro-osmosed saturated kaolinite: experimental and theoretical study

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