淤泥固化处理研究进展  

Research progress on solidification treatment of dredged silt

作　　者：陈萌 杨国录[2] 徐峰 魏红艳 CHEN Meng;YANG Guolu;XU Feng;WEI Hongyan(Hubei Provincial Water Resources and Hydropower Planning Survey and Design Institute, Wuhan 430064,China;State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072, China;;Department of Hydraulics,Yangtze River Scientific Research Institute,Wuhan 430010,China)

机构地区：[1]湖北省水利水电规划勘测设计院,武汉430064 [2]武汉大学水资源与水电工程科学国家重点实验室,武汉430072 [3]长江科学院水力学研究所,武汉430010

出　　处：《南水北调与水利科技》2018年第5期128-138,共11页South-to-North Water Transfers and Water Science & Technology

基　　金：国家水体污染控制与治理科技重大专项(2014ZX07104-005)~~

摘　　要：淤泥固化处理是淤泥资源化利用的有效方式之一。主要从淤泥固结体的物理特性、力学特性、淤泥固化机理研究方法和成果等方面,总结了淤泥固化处理的研究进展。主要综述了固化处理对淤泥液限、塑限、塑性指数、密度、容重、粒径、含水率和流动性等物理特性的影响以及含水率、黏粒含量、矿物组成、有机物、固化剂种类和含量、养护龄期、养护环境等因素对淤泥固结体力学特性的影响;然后,基于孔隙液化学性质分析法、微观结构分析法、水分转化法和电阻率法等方法,综述了淤泥固化的机理;最后,根据目前淤泥固化存在的问题,指明了淤泥固化处理未来的研究方向:(1)淤泥脱水-固化-稳定化一体化研究;(2)淤泥固化机理的定量研究;(3)淤泥固结体耐久性方面以及大规模应用等方面研究。Solidification treatment of dredged silt is one of the effective methods to utilize the silt resource.This paper summarizes the research progress of solidification treatment of dredged silt in terms of the physical and mechanical properties of solidified silt and the methods and results of studies on silt solidification mechanism.It mainly reviews the influence of solidification on the physical properties of silt,such as liquid limit,plastic limit,plasticity index,density,unit weight,particle size,water content,and fluidity,as well as the influence of water content,clay content,mineral composition,organic matter,type and content of solidified agent,curing age,and curing environment on the mechanical properties of solidified silt.Then,it reviews the solidification mechanism based on the methods of chemical property analysis of pore water,microstructural analysis,water transfer method,and resistivity method.At last,in light of the current problems facing silt solidification,it points out the research directions for the future,including(1)integration of dehydration,solidification,and stabilization,(2)quantitative research on solidification mechanism,and(3)study of durability of solidified silt and large-scale application in practical engineering.

关 键 词：淤泥 固化 物理特性 力学特性 固化机理 

分 类 号：TV851[水利工程—水利水电工程]