羧甲基纤维素钠对宽叶雀稗生长与固土能力的影响  

Effects of Sodium Carboxymethyl Cellulose on the Growth and Soil Fixation Capacity of Paspalum Broadleaf

作　　者：江世雄 李熙 陈垚 翁孙贤 王重卿 陈志波[2,3] 戴梦兰 郭学文 JIANG Shixiong;LI Xi;CHEN Yao;WENG Sunxian;WANG Chongqing;CHEN Zhibo;DAI Menglan;GUO Xuewen(State Grid Fujian Electric Power Research Institute,Fuzhou,Fujian 350007,China;Department of Geotechnical and Geological Engineering,Zijin School of Geology and Mining,Fuzhou University,Fuzhou,Fujian 350116,China;Fujian-Taiwan Science and Technology Cooperation Base of Fujian Province on Intelligent Geo-environmental Engineering,Fuzhou,Fujian 350116,China)

机构地区：[1]国网福建省电力有限公司电力科学研究院,福建福州350007 [2]福州大学紫金地质与矿业学院岩土与地质工程系,福建福州350116 [3]福建省智能环境岩土工程闽台科技合作基地,福建福州350116

出　　处：《水利与建筑工程学报》2023年第5期204-209,共6页Journal of Water Resources and Architectural Engineering

基　　金：国家电网公司总部科技项目“输变电工程余土处置与水土保持植被修复技术研究”(52130421000L)。

摘　　要：为了探究羧甲基纤维素钠(CMC)对宽叶雀稗生长和固土能力的影响,以南方地区常见的粉质黏土为研究对象,探究不同CMC含量对土的抗剪强度以及宽叶雀稗的生长高度、根系长度和固土能力的影响。试验结果表明,添加CMC会导致土颗粒聚集,从而使土中大颗粒比例增加,进而增加土壤的不均匀性。在CMC含量较低时,宽叶雀稗的发芽率、生长高度和根系长度达到最高值,随着CMC含量的增加而逐渐减小。在力学特性方面,土的抗剪强度随着CMC含量的增加而得到一定程度的提高,而CMC含量0.5%、1.5%、1.5%时宽野雀稗抗拉拔能力最好。施用少量的羧甲基纤维素钠(CMC)可促进宽叶雀稗的生长和固土能力,其含量为0.5%时为最优含量。The effects of sodium carboxymethylcellulose(CMC)on the growth and soil fixation capacity of Paedus broadleaf were investigated,and the effects of different CMC contents on soil shear strength were investigated.Taking the common silty clay in southern China as the research object,the effects of different CMC contents on soil shear strength,growth height,root length and soil consolidation ability of Paula broadleaf were explored.The experimental results show that the addition of CMC will lead to the aggregation of soil particles,which will increase the proportion of large particles in the soil,which in turn will increase the inhomogeneity of the soil.At the same time,when the CMC content was low,the germination rate,growth height and root length of Paula broadleaf reached the highest values,and then gradually decreased with the increase of CMC content.In terms of engineering mechanical properties,the shear strength of soil increased to a certain extent with the increase of CMC content,and the plant had the best pulling ability when the CMC content was 0.5%,1.5%and 1.5%.The application of a small amount of sodium carboxymethylcellulose(CMC)can promote the growth and soil fixation capacity of Paula broadleaf,and its content is 0.5%as optimal.

关 键 词：土质改良 羧甲基纤维素钠 宽叶雀稗 抗剪强度 抗拉拔力 

分 类 号：P642.2[天文地球—工程地质学]