垂直屏障对污染地下水水动力控制的影响
EFFECT OF VERTICAL BARRIERS ON HYDRODYNAMIC CONTROL OF CONTAMINATED GROUNDWATER
李翔 1王乾 1李聪 1李怿 1崔树阳1
作者信息
- 1. 中石化炼化工程(集团)股份有限公司洛阳技术研发中心,河南洛阳 471000
- 折叠
摘要
为确定垂直屏障对污染地下水水动力控制的影响,进而指导水动力阻截技术方案的设计和施工,建立了水动力阻截技术试验装置,在不同工况下进行了试验,结合GMS的模拟结果,发现上游开放式垂直屏障的存在可以在下游污染源附近形成大范围的污染物捕获区,从而延缓污染物的扩散,并使下游监测点的污染物峰值浓度下降.上游开放式垂直屏障的弧长越长,阻截效果越好.上游抽水方案的阻截效果与抽水流量有直接关系:抽水流量越大,在中游形成的捕获区范围越大,污染物扩散越慢,峰值浓度越小.而垂直屏障与上游抽水井的结合可以有效降低控制污染物扩散所必需的抽水流量,从而大大降低上游抽水方案的实施成本.
Abstract
To determine the influence of vertical barriers on the hydrodynamic control of contaminated groundwater and guide the design and construction of hydrodynamic interception technology,a hydrodynamic interception technology test device was established,and tests were carried out under different working conditions.Combined with the simulation results of GMS,it was found that the existence of an upstream open vertical barrier could form a large range of pollutant capture areas near the downstream pollution source,thus delaying the diffusion of pollutants and reducing the peak concentration of pollutants at the downstream monitoring point.The longer the arc length of the upstream open vertical barrier,the better the interception effect.The interception effect of the upstream pumping scheme was directly related to the pumped flow.The higher the pumped flow,the larger the range of the captured area formed in the middle reach,the slower the diffusion of pollutants,and the lower the peak concentration.The combination of vertical barriers and upstream pumping wells could very effectively reduce the pumping flow necessary to control the diffusion of pollutants,thus greatly reducing the implementation cost of the upstream pumping scheme.
关键词
垂直屏障/水动力阻截技术/模拟/上游抽水/抽水流量Key words
vertical barrier/hydrodynamic interception technology/simulation/upstream pumping/pumped flow引用本文复制引用
基金项目
国家重点研发计划(2018YFC1803303)
出版年
2024
NETL
NSTL
万方数据