On foundation of the detailed analysis of geology and hydrogeology conditions inNorth China plain, hydrogeologic conceptual model and groundwater flow model arerespectively built and then, the flow model is computed by finite element method which isembedded in FEFLOW (Finite Element subsurface Flow system) software.
Its structure is constructed to simulate and predict hydrological process. The model couples one-dimensional subsurface flow, one-dimensional overtand flow, one-dimensional streamflow, one-dimensional groundwater flow and two-dimensional soil moisture content equations.
Through analyzing the necessity of the previous exploration, pumping test, the construction of underground water flow model and the information system of water source field, and the reinforcement of long-term dynamic monitoring in the emergency and standby water source filed construction of Huairou, we get more valuable advice which can be provided to other water source field construction of Beijing.
So it has very important reality meaning for researching the effect onwater resource of coal mining, especially the effect on the underground water flow regime.
The building technology and light tracing principles of the making system of three dimensional substantial model--GWT3D(V1 00) for the underground water flow plane are presented in the paper. Essential explanations of data file texture needed by the mapping of the system are made, the functions and features of GWT3D are stated and an applied example is cited for the three dimensional substantial model of groundwater flow field mapped for the region of Nantong.
It is shown that there are two different regimes of solute precipitation which are determined by the evaporation front velocity and the groundwater flow rate.
A model of a fresh groundwater flow through a rectangular horizontal pressurized reservoir toward a salt-water sea (basin, reservoir, trench, etc.) is examined within the framework of two-dimensional steady-state flow theory.
The results of analytical studies of the problems arising in connection with the prediction of ground water flow in civil engineering, hydrogeology and irrigation engineering are reviewed.
The ground water flow and mass transport models were constructed with the help of geo-hydrological and geophysical informations using Visual Modflow software.
Permafrost degradation increased soil permeability in spring and increased ground water flow in summer, causing a decrease of annual flow (due mainly to the flood flow decrease in spring).
This model is validated by a subsurface flow separation algorithm for an example river basin, which shows that the new model can simulate the subsurface flow reasonably.
The project includes a 90-km network of water-level regulating supply and drainage canals and a 100-ha lake and a barrier to underground water flow from the lake to cultivated areas.