疏浚土作为填埋场粘土垫层防渗材料的研究  

STUDY ON DREDGED SOIL USED AS IMPERMEABLE MATERIALS OF CLAY LINER OF LANDFILL

作　　者：史成江[1] 唐晓武 林廷松[1] 

机构地区：[1]浙江大学岩土工程研究所,杭州310027

出　　处：《岩石力学与工程学报》2004年第z1期4418-4421,共4页Chinese Journal of Rock Mechanics and Engineering

基　　金：教育部优秀留学归国人员择优资助计划(教外留司([2003]406号);浙江省留学归国人员基金([2002]4);浙江大学留学基金资助项目。

摘　　要：基于填埋场粘土类防渗垫层的3个关键因素:渗透性、强度、吸附性,对混合土(疏浚土和粉质粘土)与原粉质粘土做了大量对比试验。结果表明,在最优含水量时,前者的渗透系数低于后者,且随疏浚土掺入量增加而降低;前者的不固结不排水抗剪强度高于后者,且随疏浚土掺入量增加而增加;前者对Cu2+,Zn2+的吸附能力远高于后者,在高浓度时对K+的吸附能力也较后者强,且随疏浚土掺入量增加有所增强。For the 3 key factors of clay liners of landfill,permeability,strength and absorptivity,geotechnical and geoenvironmental properties of the mixed soils(dredged soil and silty clay) are studied and compared with the original silty clay by series of laboratory tests.The results of laboratory tests show that the mixed soils can reduce permeability coefficient,increase strength and adsorption capacity to Cu2+ and Zn2+.Generally,the geotechnical and geoenvironmental properties of the mixed soils are much better than those of the original silty clay.

关 键 词：土力学 粘土衬垫 填埋场 疏浚土 吸附能力 不排水抗剪强度 

分 类 号：X799[环境科学与工程—环境工程] TU411.4[建筑科学—岩土工程]