Understanding Embankment in general
Dike is a construct created to prevent flooding in the plains dilindungi.Bagaimanapun, dikes also impede the flow of river water, aloran produce more and higher water level. Dikes can also be found along the coast, where the dune / dune sand beaches are not strong enough, along the river to protect the flood, along the lake or polder. Dikes were also made for the purpose empoldering / form the boundaries of protection to an area that is inundated with a military protection. Earthwork levees could be permanent or only emergency construction, usually made of sand bags so quickly during the flood.
Based on the functions and dimensions of the place as well as the materials used and the local topography, embankments DAPT distinguished as follows:
a) the main dike
Building levees along both sides of the river to accommodate flood discharge plan.
b) secondary dike
Dikes were built parallel to the main dike, well above the riverbank in front of the main dike dike called the summer or in the back levees utam functioning for the second defense, suppose happens break-in at the main dike. Depending on the importance of a protected area sometimes also built dikes tertiary.
c) open Embankment
In rivers rushing current, usually DAPT built dikes that are not continuous, but intermittent. Thus the high flood peak but the time period can be cut short, because most of the flood flows out through the gaps between the embankments are entering areas behind levees prepared for temporary flood shelters. Usually the shelter areas surrounded by levees anyway.
After the flood subsided, the water being stored, and then flows back into the river through these gaps. So it is not necessary to the doors or spillway as well as other complementary buildings. In addition to the above three examples Tanggula, there are still some dikes, including; dividing embankment, embankment circular, transverse dike, levee steering, levees around, embankment edge, specialized dike and levee behind.
In general, the cause of damage to the dike body is as follows:
a) Establishment of continuous sliding plane due to slope too steep embankment.
b) The occurrence of the collapse of the embankment slope due to saturation of water in the body of the embankment caused by seepage of water during a flood or upon the occurrence of continuous rainfall.
c) The occurrence of leaks in the foundation of the dike.
d) tergerusnya front slope embankment by the river currents.
e) The occurrence of runoff on mercu embankment.
f) The occurrence of a shift in the foundation caused by the earthquake.
One way is to build flood prevention infrastructure is the dike. Dikes can be used to block the flow. The following describes the terms of the embankment, benefits and making analysis