摘要
在污染场地原位修复技术中,修复药剂在污染土壤中的分散程度是保证修复效果的关键,因此岩土施工技术在上海低渗透性污染场地中的应用越来越多。本文通过小试研究了固化剂(水泥)的投加对修复效果的影响,得出6%固化剂的添加提高了过硫酸钠对污染物的去除效果,同时水泥土无侧限抗压强度能达到1000kPa左右,能够克服岩土施工技术在场地修复中地基承载力不足的问题,有利于该技术在工程项目中的应用和推广。
The dispersion of remediation agents in contaminated soil is the key to repairing contaminated sites to ensure their suitability for construction. Therefore, geotechnical construction technology, which involves the use of remediation agents, is popular in Shanghai＇s low permeability contaminated site. In this study, the efect of adding a curing agent （cement） on the repair of contaminated soil was investigated via a small test. It was found that the addition of 6% curing agent improved the pollutant removal efect of sodium per sulfate. Further, the unconfned compressive strength of this cement soil reached around 1000kPa, over coming the problem of the soil’s insufcient bearing capacity as foundation for construction. Thus, this is benefcial for the promotion of geotechnical construction technology in engineering projects.
作者
宋刚练
SONG Gang-Lian(Shanghai Institute of Geological Engineering Exploration,Shanghai 200072,China;Shanghai Geological Construction Co.,Ltd.,Shanghai 200436,China)
出处
《上海国土资源》
2018年第4期51-54,共4页
Shanghai Land & Resources
基金
上海市科学技术委员会科研计划项目"工业场地污染综合评估及复合污染土壤修复集成技术研究与示范应用"(14231200503)
关键词
土壤污染
原位修复
水泥固化剂
地基承载力
岩土施工技术
soil pollution
in-situ remediation
cement curing agent
foundation bearing capacity
geotechnical construction technology
