Since recently groundwater pumping discharge has been much greater than recharge in Taiwan, land subsidence and groundwater alkalization in some areas occurred. Besides, industry chemical solution together with the breaking off of underground pipe lines and oil tanks further-more cause groundwater pollution in Taiwan. Because of this, the Environmental Protection Administration (EPA) starts to collect funds and work on groundwater pollution remedy according to “the regulation of soil and groundwater pollutions remedy”. Moreover, through the project of “groundwater observation network in Taiwan”, Water Resources Agency (WRA) tests the groundwater quality constantly. However, there is still no domestically developed groundwater mass transport model for the use of simulation of groundwater pollution in Taiwan. Therefore, WRA initiates the present research project of “the development of groundwater mass transport model and in situ experiment.
The goals of the above mentioned research project are (a) to develop domestic mass transport models which suit for both large and small areas of multi-layer groundwater, (b) to estimate parameters of groundwater mass transport in Taiwan through in situ and sand box experiments. The results of this research project, hopefully, can provide WRA references of groundwater pumping control and pollution remedy.
The categories of this research project are divided into (a) the development of groundwater mass transport models, and (b) the in situ and sand box experiments. This is a three-year project; the content of works for each year are as follows:
1. The first year: (a) the development and test of a multi-layer groundwater mass transport model, (b) the set-up of the test and observation field of groundwater flow and mass transport.
2. The second year: (a) the application of the first-year model for the simulation of field groundwater mass transport, (b) the development and test of another groundwater mass transport model with sharp interface, (c) the groundwater tracer test, and (d) the preparation of sand box experiment.
3. The third year: (a) the use of the second-year model for the simulation of salt water intrusion, (b) the sand box experiment, (c) parameters of groundwater mass transport in Taiwan.