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DISCUSSION ON THE KEY PROBLEMS OF NUMERICAL SIMULATION OF GROUNDWATER AT CONTAMINATED SITES

ZHENG LI-jun;CCTEG Hangzhou Environmental Research Institute;  
The problem of paying attention to model software technology and looking down on hydro-geological condition analysis in the numerical simulation of groundwater is very common.Based on the reality of increasing numerical simulation work about China's contaminated sites,through the collection of information and experience, the key issue model dimension, boundary conditions, sources and sinks and uncertainty analysis in the numerical simulation of groundwater at contaminated sites are discussed. The results show that: 1 Possible to establish a three-dimensional or quasi-three-dimensional numerical simulation model of groundwater at contaminated sites. 2 Universal head boundary has a wide application in the groundwater simulation of contaminated sites, especially when dealing with sources and sinks change is better. 3 Parameter sensitivity analysis, model uncertainty, subsequent inspection and acceptance in the relevant work can not be ignored. Correctly understanding and dealing with the key issues of the numerical simulation of groundwater at contaminated sites, can provide a scientific guarantee for groundwater investigation and assessment, pollution remediation and treatment of contaminated sites.
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