负压深井降水系统在地下水修复工程中的研究与应用
Research and Application of Negative Pressure Deep Well Dewatering System in Groundwater Remediation Engineering

降水技术是地下水修复工程中常用的一种辅助技术，可通过对地下水进行抽提异位处理，快速去除地下水中的污染物。但对于粘土层以及淤泥质粘土等，由于其渗透性较差，传统的降水技术往往效率较低，而负压深井降水系统可以为管井提供一定的真空度，加快了管井的降水速度，提高了抽水速率。本文以某地下水修复项目为例，采用负压深井降水技术，实现了稳定高效的降水，为后续地下水修复的顺利进行奠定了基础。
Precipitation technology is an auxiliary technology commonly used in groundwater remediation projects. It can quickly remove pollutants in groundwater by extracting and ex-situ treatment of groundwater. However, for clay layers and silty clays, due to their poor permeability, traditional dewatering techniques are often inefficient. The negative pressure deep well dewatering system can provide a certain degree of vacuum for tube wells, speed up the dewatering speed of tube wells, and improve the efficiency of dewatering pumping rate. Taking a groundwater restoration project as an example, this paper adopts negative pressure deep well dewatering technology to achieve stable and efficient precipitation, which lays the foundation for the smooth progress of subsequent groundwater restoration.