水-岩(土)化学作用对岩土体抗剪强度影响研究的回顾与展望  

Review and Prospect of Water-rock(soil) Chemical Interaction's Influence on Shear Strength of Rock Soil Mass

作　　者：刘剑[1,2] 崔鹏[1,3] 

机构地区：[1]中国科学院水利部成都山地灾害与环境研究所,中国科学院山地灾害与地表重点实验室,成都610041 [2]中国科学院大学,北京100493 [3]中国科学院青藏高原地球科学卓越创新中心,北京100101

出　　处：《科学技术与工程》2015年第18期117-127,共11页Science Technology and Engineering

基　　金：国家科技支撑计划(2012BAC06B02);中国科学院重点部署项目(KZZD-EW-05-01)资助

摘　　要：岩土体抗剪强度对边坡稳定性有重要影响,作为边坡失稳与否的最直接评价指标,对其研究具有重要的理论和现实意义。综述了三十多年来水-岩(土)化学作用对岩土体强度影响研究的发展过程,指出目前的研究主要集中在化学溶液对岩土体力学性质及微细观结构的影响方面,但取得的认识程度较低,尤其在水-土化学作用方面。根据现阶段研究状况,提出加强对土体抗剪强度本质的研究,深入探索内摩擦角物理本质、黏土矿物黏聚力本质及其变化机理,建立具有普适性的定量计算模型。并基于水土化学反应动力学,实现土体黏聚力预测。此外,水-岩(土)化学作用是各类地质灾害发生的内在因素,有必要在岩土体抗剪强度变化本质研究的基础上,开展抗化学风化研究,减缓强度衰减速度,以减少或延缓地质灾害的发生。The strength of rock and soil had a major impact on slope stability, as the most direct evaluation of slope instability or failure, the research had important theoretical and practical significance. This article reviewed the development process of water-rock （soil） chemical effects study on rock mass strength impact in past three decades. The current study focused on the observing and simulating aspects of the soil structure’s physical properties and micro view affected by water chemistry solution. However, the level of awareness is low, especially in the role of water-soil chemistry interaction. According to research situation at this stage, the author proposed to strengthen the nature research of clay minerals cohesion, which generated ubiquitously in soil. Explored the physical nature of the internal friction angle, cohesion nature of clay minerals and changing mechanism, and created quantitative calculation model with universal value. Based on this, used chemical kinetics to realize soil cohesion forecasts. In addition, the water - rock （soil） chemistry was the internal factors of all kinds of geological disasters, it was necessary to carry out anti-chemical weathering study, this helped to improve strength or slow decay rate of intensity, and reduced or delayed the occurrence of geological disasters.

关 键 词：水-岩(土)化学作用 抗剪强度 黏聚力 内摩擦角 

分 类 号：K903[历史地理—人文地理学]