组合式垂直防渗在危废填埋场治理中的应用

Application of Composite Vertical Seepage Control in the Treatment of a Hazardous Waste Landfill

某危废填埋场未设置妥善的环保设施,致使渗滤液下渗、迁移,污染地下水。为有效阻隔渗滤液对地下水的污染,结合场地工程地质和水文地质条件,在填埋场下游采用了上部高压旋喷灌浆+下部帷幕灌浆的工艺,提出了组合式垂直防渗搭接技术。填埋场环保治理项目实施以来,下游地下水水质显著改善,实现了原位风险管控目标。同时,也为其他原位风险管控的填埋场、尾矿库、渣库环保治理项目提供了借鉴。

The lack of proper environmental protection at a hazardous waste landfill results in the infiltration and migration of leachate,leading to groundwater pollution.To effectively prevent leachate from contaminating the groundwater,a vertical antiseepage overlapping technique that combines the upper highpressure jet grouting and the lower curtain grouting is proposed,taking into account the engineering geological and hydrogeological conditions of the site.The implementation of the landfill environmental protection and treatment project has significantly improved the groundwater quality downstream and successfully achieved the objective of in-situ risk control.This approach also provides valuable insights for other environmental protection projects dealing with landfills,tailings ponds,and slag ponds that require in-situ risk control.