摘要
我国地下水污染已呈现从点状污染向带状和面状污染发展的态势,传统修复材料投放工艺粗糙、在含水介质中难扩散,且地下水存在分层、赋存状态多变,注入参数控制难度大,易导致各层水交叉污染等问题。针对这些问题,本文提出了集垂直/导向钻进、旋转喷射注入、微压压裂扩散、扩张封隔等一体的原位喷射注入工艺,研制了配套钻进—注入一体化钻具,总结了喷射注入过程中修复材料的运移和修复机制,为污染场地原位修复系统的设计奠定基础,为绿色精准修复提供参考。
Groundwater contamination in China has developed from point‑like to band‑like and surface‑like contamination.Traditional remediation materials are roughly placed,difficult to diffuse in the water‑bearing media,and there are problems such as stratification of groundwater,variable storage states,difficulty in controlling injection parameters,and easy cross‑contamination of various layers of water.To address these problems,this paper proposes an in‑situ injection process that integrates vertical/guided drilling,rotary injection,micro‑pressure fracture diffusion and expansion seal,develops an integrated drilling-injection tool,summarises the transport of remediation materials and remediation mechanisms during injection,lays the foundation for the design of in‑situ remediation systems for contaminated sites,and provides a reference for green and precise remediation.
作者
冯超
王瑜
刘宝林
王志乔
孔令镕
FENG Chao;WANG Yu;LIU Baolin;WANG Zhiqiao;KONG Lingrong(School of Engineering and Technology,China University of Geosciences(Beijing),Beijing 100083,China;Key Laboratory on Deep GeoDrilling Technology,MNR,Beijing 100083,China)
出处
《钻探工程》
2023年第S01期509-513,共5页
Drilling Engineering
基金
国家重点研发计划课题“多分支水平井导向钻进与精准注入机具研制”(编号:2018YFC1802404)
高精尖学科建设“城市地质环境与工程”。
关键词
污染场地
原位修复
喷射注入
修复机制
运移机理
contaminated site
in‑situ technology
injection
remediation mechanisms
movement mechanisms
