同济大学学报（自然科学版）2026，Vol.54Issue(2)：212-222,254,12.DOI:10.11908/j.issn.0253-374x.24337
多场作用下压实膨润土剪切特性研究进展
Review on Shear Properties of Compacted Bentonite Under Multi-field Action
摘要
Abstract
The shear characteristics of bentonite are crucial for maintaining the engineering barrier performance of deep geological repositories.We summarize the response mechanisms of bentonite shear characteristics to the repository's near-field environment and review recent advancements in shear strength prediction models.Under stress,increases in bentonite shear strength are influenced by a rise in solid phase content and a reduction in pore volume per unit.Under suction conditions,shear behaviors are governed by the lubricating effect of the adsorbed water film and the friction between soil particles.Chemical interactions affect shear behaviors through factors like solution concentration,cation exchange reactions,and mineral phase transitions(under alkaline conditions).Temperature effects,such as illitization and microstructural rearrangement,cause an irreversible increase in shear strength.Under multi-field coupling conditions,the shear properties are influenced by the intricate interactions among various factors,yet current research in this area remains insufficient.While current prediction models for shear strength under suction are well-developed,chemical interaction models mainly consider solution type and concentration,overlooking the roles of cation exchange and mineral dissolution.Given these limitations,further studies are needed to examine the shear behavior under multi-field coupling,assess the deterioration of shear strength following bentonite self-healing,and enhance the accuracy of prediction models.关键词
深地质处置/压实膨润土/剪切特性/多场作用Key words
deep geological repository/compacted bentonite/shear characteristics/multi-field action分类
建筑与水利引用本文复制引用
张伊然,陈永贵,戴文杰,叶为民,王琼,孙曌..多场作用下压实膨润土剪切特性研究进展[J].同济大学学报（自然科学版）,2026,54(2):212-222,254,12.基金项目
国家自然科学基金(42430713) （42430713）
国家杰出青年科学基金(42125701) （42125701）
上海市教委科研创新计划(2023ZKZD26) （2023ZKZD26）
