【摘要】 论述了水土作用系统中离子的交换吸附等作用，阐明了其对土体膨胀性，液、塑限等的影响．并且论述了在强酸、强碱环境下地下水中的Ｈ＋和ＯＨ－与土体某些矿物成分发生化学反应，改变其化学成分，破坏其连结，使其强度降低的化学机理更多还原

【Abstract】 This paper discusses the action of ion exchange and absorption when ground water soil field changes soil′s expansion,liquid and plastic limit.Furthermore,this paper also explores the chemical action between the ion,such as H + and OH -,and some mineral composition in soil,which will change soil′s chemical composition,destroy its join,and reduce its strength in the end.更多还原