Essay about History Of Dams, Locks And Levees
The conception of dams, locks and levees.
Water is an essential resource which life depends on. Civilizations in the past have evolved to exist around water as it provides a source of food, transportation, and trade. However, people realized that they were unable to extract the potential that water as a resource had. Thus, in order to harness energy of water, to use it as means of transportation and to utilize hoard of other benefits of a resource like water and at the same time to mitigate the risks associated with it humans conceptualized structures such as dams, locks and levees.
A typical dam can be built by the solid material across a river, thus stopping and storing the flow of water. Being both stable and watertight are the two basic requirements. By using the impermeable or impervious materials, the water will not leak out of dam and escape downstream. Besides, the stability helps the dam to stand large volume water and to release through the outlet valve without causing damage to itself.
Two steps must be finished before the dam wall can be well built. The dam foundation area should be well stripped of and all the unsuitable material must be disposed. Afterwards, the foundation can be prepared by removing the seams of weak material and replacing with concrete. Besides, the foundation also needs to be grouted, which involves drilling holes and pumping these holes full of cement grout. The grouting process is designed to…