Applications of Geomembrane Cutoff Walls in Remediation of Contaminated Sites

摘要：

　　A composite cutoff wall consisting of HDPE geomembrane combined with soil-bentonite backfill can be effectively applied to site remediation projects.This technique was firstly successfully applied by Beijing GeoEnviron Engineering & Technology,Inc.(BGE)in a copper-containing acidic liquid leakage project in China in 2011.Then,BGE successfully applied and promoted this technique in many other projects in recent 7 years.Some specific key sealing materials were developed to achieve the effective bonding between geomembrane and bedrock and clay aquifers.In addition,a special machine for installing geomembranes was also designed.The maximum geomembrane inserting depth on site reached to 32 m.Geomembrane composite cutoff wall is considered to be currently the safest and most effective vertical barrier technique to block horizontal pollution migration.

关键词： HDPE geomembrane Vertical barrier Interlock Key-in

作者: Xuede Qian Zhonghua Zheng Zhi Guo Changqing Qi Liqi Liu Yong Liu Shengli Zhen Shiwen Ding Jing Jin Yang Wang Yimin Ge

作者单位: Michigan Department of Environmental Quality,525 W Allegan Street,Lansing,MI 48909,USA Beijing GeoEnviron Engineering & Technology,Inc.,9 Dijin Road,Beijing 100095,China

会议类型: 国际会议

会议名称: The 8th International Congress on Environmental Geotechnics(第八届国际环境土工大会)

会议地点: 杭州

会议语种:英文

页码: 335-342

在线出版日期: 2018-10-28（万方平台首次上网日期，不代表论文的发表时间）