地下水循环井V1.0场地应用效果分析OA北大核心CSTPCD

As one of the in-situ remediation technologies,groundwater circulation well has becoming a vital solution for contaminated aquifers remediation due to its advantages of small disturbance to aquifers,simple structure and low repair cost.However,large engineering applications of circulating well technology is still lacking in China.Based on the numerical simulation,the circulating well V1.0 system was designed in this study and constructed based on the simulation results.The system was constructed in Chang'an University,and the flow circulation characteristics and solute transport effect of the circulating well were evaluated through a variety of field tests.Results showed that the solute transport range was positively correlated with the running time of the circulating well and the pumping amount of the circulating well.Meanwhile,the water flow and solute transport range were also affected by the horizontal permeability coefficient and the vertical permeability coefficient.The greater the pumping amount of the circulating well,the greater the water level drop of the upper screen section and the water level rise of the lower screen section.While potassium permanganate was used as the tracer,with the extension of the running time of the circulating well,it can be transported to a longer distance in a high concentration form.This study could provide a scientific guidance for engineering applications of circulating well system in China.