Hired largely to unclog drainage gates, he scours the murky depths of the Tietê and Pinheiros, which have symbolized São Paulo's environmental degradation for decades, bringing to the surface a list of items that is eerie and bizarre.
During flooding periods, when drainage gates are closed, pumping operations play a major role in efficiently reducing flood damage.
The results presented in this paper demonstrate the predictive capabilities of the numerical model and its potential as a powerful engineering tool for estimating the discharge-water level relationship and the three-dimensional flowfield of real-life drainage gates.
In this study we carry out numerical simulations of free surface flow through the drainage gates of the Saemangeum tidal barrier that is located in the west coast of South Korea and is also known as the world largest man-made tidal barrier.
The model simulates the coastal aquifer as an integral system considering complexities such as variable-density flow, variably saturated flow, irregular boundary conditions, irregular land surface and anthropogenic structures (e.g., dyke, drainage canals, water gates).
That would block any storm surge from Hurricane Gustav, and huge pumps would push drainage water over the gates and into the lake.
Take the dispute between Robert Schubert and his upland neighbor here, William H. Gates, over a drainage system that Mr. Gates put in his backyard almost three years ago and that Mr. Schubert says has dried up a stream and pond on his property.
The effort, scheduled for completion in 2011, involves the strengthening of certain levees, the building of flood gates on drainage and navigation canals, and the installation of pumps to remove runoff within the city's basins.
Others handcuffed themselves together inside drainage pipes by the front gate of the site.
However, the internal structure was completely changed, the city was carefully planned, first to be built were the streets that descends from the elevated center into the gates, assuring the drainage of rain water.
