垂直阻隔组合工艺在污染场地修复工程中的研究与应用

Research and Application of Vertical Barrier Combined Technology in Polluted Site Remediation Project

摘要: 垂直阻隔是土壤及地下水修复工程中常用的一种技术，可通过对污染区域的垂直封堵形成止水帷幕，切断垂直暴露途径，阻止污染羽的迁移，但是单一的垂直阻隔技术往往阻隔效果较差。本文以某修复项目为例，采用“三轴搅拌桩 + 高压旋喷桩”的垂直阻隔组合技术，实现了对污染地块的有效阻隔，为后续场地修复奠定了基础，有效阻止了二次污染的产生。

Abstract: Vertical barrier is a technology commonly used in soil and groundwater remediation projects. It can form a water-stopping curtain by vertically blocking the polluted area, cut off the vertical exposure path, and prevent the migration of pollution plumes. However, a single vertical barrier technology often has better barrier effect. In this paper, taking a restoration project as an example, the vertical barrier combination technology of “three-axis stirring pile + high-pressure rotary jetting pile” is used to achieve an effective barrier to the polluted land, laying a foundation for the subsequent site restoration and effectively preventing secondary pollution.