化学场对膨润土水力特性影响研究进展

Chemical Environment Effect on Hydro mechanical Behaviour of Compacted Bentonite

摘要:

在阐述处置库近场化学环境的基础上从化学场对膨润土的膨胀力影响、渗透性影响、体变特性影响及模型研究4个方面回顾和总结了国内外的研究进展，通过分析影响因素、作用机理以及研究中存在的问题指出当前研究中的不足，并提出进一步研究的建议.

关键词:处置库; 化学场; 缓冲/回填材料; 高压实膨润土; 水力学性能

Abstract:

An analysis was first made of the chemical environment at near field of deep geological repository. Then, the recent progresses in studies related to the chemical behavior of the compacted bentonite were summarized from four aspects including the effects of chemical conditions on the swelling pressure; the effects of chemical conditions on the permeability; the chemistry induced volume change behavior; and the model studies. Finally, the major problems in current studies were pointed out and some hot topics in this field were proposed to study in the future.

Key words:repository; groundwater chemistry; backfill/buffer material; highly compacted bentonite; hydro mechanical behaviour