A trench is a classification of excavation in the ground. Trenches are used in agriculture, military, archaeology, geology and infrastructure. In agriculture, trenches are used as a mean to transport water, draining of water and irrigation. Trenches are used in archaeology to allow archaeologists in finding materials in chronological order. In civil engineering, trenches are used to search for pipes and other underground constructions.
To dig a trench, a piece of equipment needed is known as trencher. There are different sizes of trench digging tools or machinery, from walk-behind models, attachments for a tractor or skid loader or to heavy tracked engineering vehicles. Apart from the sizes, the types of trench digging tools or machinery to be used are chosen based on the required size and hardness of the trench digging tools or machinery.
One type of trenchers is a chain trencher. It has a digging chain which is driven around a rounded metal frame or boom to cut parts of the ground. To control the depth of the cut, the angle of the boom can be adjusted.