A Review of Colloid Transport in Fractured Rocks  

作　　者：ZHANG Wei TANG Xiangyu WEISBROD Noam GUAN Zhuo 

机构地区：[1]Key Laboratory of Mountain Surface Processes and Ecological Regulation,Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China [2]Department of Environmental Hydrology and Microbiology,Zuckerberg Institute for Water Research,J.Blaustein Institutes for Desert Research,Ben-Gurion University of the Negev,Midreshet Ben-Gurion 84990,Israel

出　　处：《Journal of Mountain Science》2012年第6期770-787,共18页山地科学学报（英文）

基　　金：supported by the "Hundred Talents Program" of the Chinese Academy of Sciences (No. 724);the National Key Technology R&D Program of the Ministry of Science and Technology of China (No. 2011BAC09B05);the Chinese Academy of Sciences Visiting Professorship for Senior International Scientists(No. 2011T1Z27);the National Natural Science Foundation of China (No. 41171372)

摘　　要：Recent recognition of colloid and colloidassociated transport of strongly sorbing contaminants in fractured rocks highlights the importance of exploring the transport behavior of colloids under conditions prevailing in the field.The rapid transport of colloids through fractured rocks-as affected by the hydraulic properties of the flow system,the properties of fracture surface and the geochemical conditionshas not been sufficiently elucidated,and predictions of colloid transport through fractures have encountered difficulties,particularly at the field scale.This article reviews the current understanding of the mechanisms and modeling of colloid transport and retention in fractured rocks.Commonly used experimental techniques and approaches for conducting colloid transport experiments at different scales,ranging from the laboratory to the field scale,are summarized and commented upon.The importance of various interactions(e.g.,dissolution,colloid deposition,generation,mobilization and deposition of filling materials within fractures) between the flowing solution and the fracture walls(in many cases,with skin or coating on the host rock at the liquid-solid interface) has been stressed.Colloid transport through fractures of high heterogeneity has not yet been well understood and modeled at the field scale.Here,we summarize the current knowledge and understanding accumulated in the last two decades in regard to colloid and colloidassociated transport through fractures.Future research needs are also discussed.

关 键 词：Colloid transport Colloid retention FRACTURE ROCK 

分 类 号：P618.130.2[天文地球—矿床学] U-27[天文地球—地质学]