秸秆排水体降解与疏浚淤泥生态加固相互作用研究  

Study on the Interaction Between Degradation of Straw Drainage Body and Ecological Reinforcement of Dredged Silt

作　　者：李辉[1] 徐桂中[2] 姚达 别学清 殷雳 LI Hui;XU Guizhong;YAO Da;BIE Xueqing;YIN Li(Jiangsu Province Engineering Investigation and Research Institute Co.,Ltd.,Yangzhou Jiangsu 225000,China;College of Civil Engineering,Yancheng Institute of Technology,Yancheng Jiangsu 224051,China;Jiangsu Hongji Water Source Technology Co.,Ltd.,Yangzhou Jiangsu 225000,China;School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan Anhui 232001,China)

机构地区：[1]江苏省工程勘测研究院有限责任公司,江苏扬州225000 [2]盐城工学院土木工程学院,江苏盐城224051 [3]江苏鸿基水源科技股份有限公司,江苏扬州225000 [4]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《盐城工学院学报（自然科学版）》2023年第1期1-6,共6页Journal of Yancheng Institute of Technology:Natural Science Edition

基　　金：国家自然科学基金项目(52078449);江苏省水利科技项目(2020018)。

摘　　要：通过水平秸秆排水体真空预压疏浚淤泥模型试验,分析降解后的秸秆和加固后的疏浚泥元素含量的变化规律,研究秸秆排水体降解与疏浚淤泥生态加固的相互作用机制。结果表明:降解后秸秆排水体中的纤维素、半纤维素以及木质素的总质量降幅达16.7%;疏浚淤泥中的有机质含量,以及C、N、S、K和P元素含量明显增加,且随着距秸秆排水体距离的增加以一定梯度逐渐递减。疏浚淤泥为秸秆排水体提供了降解环境,秸秆降解产物的沉淀和聚集丰富了淤泥的养分,表明该技术有利于真空加固后疏浚淤泥的快速复耕,值得推广应用。Through the model test of vacuum preloading dredged sludge with horizontal straw drainage body,the change law of el⁃ement content in degraded straw and reinforced dredged sludge was analyzed,and the interaction mechanism between degrada⁃tion of straw drainage body and ecological reinforcement of dredged sludge was studied.The results showed that the total mass of cellulose,hemicellulose and lignin in straw drainage body decreased by 16.7%after degradation.The content of organic matter and elements C,N,S,K and P in dredged sludge increased obviously.And with the increase of the distance from the straw drain⁃age body,it gradually decreases with a certain gradient.Dredged sludge provides a degradation environment for straw drainage body,and the sedimentation and accumulation of straw degradation products enrich the nutrients of sludge,indicating that this technology is conducive to the rapid rehabilitation of dredged sludge after vacuum consolidation,and is worthy of popularization and application.

关 键 词：秸秆排水体 疏浚淤泥 真空预压 复耕 

分 类 号：TU47[建筑科学—结构工程]