摘要
以某河流为研究对象,开展了沉积物的物理化学特性及异位固化稳定处理技术研究。结果表明:该地区沉积物中的粉粒度和液限超过60%,含水量超过160%,孔隙比超过4.8,属高液限黏性土。采用固化/稳定化技术处理,与原始沉积物相比,在3%的固化剂用量下,固化剂对As、Pb、Ni、Co的浸出率和稳定性试验结果符合地下水质量标准。经过7d养护后,在10%固化剂掺量的情况下,底泥含水率和无侧限抗压强度均较好,可以满足河道周边的回填、堆坝砌岸等用途。
A study was conducted on the physical and chemical properties of sediment and the technology of ectopic solidification and stabilization treatment in a certain river.Research has shown that the particle size and liquid limit of the sediment in this area exceed 60%;the water content exceeds 160%,and the pore ratio exceeds 4.8,indicating a high liquid limit cohesive soil.Using solidification/stabilization technology for treatment,compared with the original sediment,the leaching rate and stability test results of As,Pb,Ni,Co by the solidification agent at a 3% dosage meet the groundwater quality standards.After 7 days of curing,with a 10%curing agent dosage,the moisture content and unconfined compressive strength of the sediment are both good,which can meet the needs of backfilling,dam building,and other purposes around the river.
作者
杨丽丽
齐迎爽
马星博
赵钰
谢安国
Yang Lili;Qi Yingshuang;Ma Xingbo;Zhao Yu;Xie Anguo(Water and Soil Conservation Workstation of Changping District,Beijing 1022001,China;River Lake Ecological Environment Service Center of Changping District,Beijing 1022182,China)
出处
《绿色科技》
2023年第10期231-235,共5页
Journal of Green Science and Technology
关键词
河道底泥
稳定化
固化
river sediment
stabilization
solidification
作者简介
杨丽丽(1988-),女,硕士,研究方向为水利工程设计、水环境治理与保护;通讯作者:谢安国(1979-),男,硕士,副高级工程师,研究方向为农业水土。
