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What is an Interceptor Trench?
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Posted On :
Dec-06-2012
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Article Word Count :
555
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Interceptor trenches are used to manage ground water. The trenches are usually built at waste management locations. Building interceptor trenches have traditionally been extremely hard to accomplish.
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Interceptor trenches are used to manage ground water. The trenches are usually built at waste management locations. Building interceptor trenches have traditionally been extremely hard to accomplish. Now, with the development of better installation processes, the trenches can easily be installed.
Ground Improvement Techniques
Waste treatment depends on the success of the control of impurities through ground water. There are a few common techniques available to control ground water. These techniques are interceptor trenches, dewatering wells and slurry walls. Interceptor trenches are built by digging out a continuous hole in the ground and substituting the dirt with a permeable backfill that would allow for drainage. Interceptor trenches are greatground improvement methods.
Comparing Ground Improvement Methods
Inceptor trenches have an advantage over slurry walls and dewatering wells. Slurry walls slow down the flow of ground water. The slurry walls should not be perfect. They should cover the entire length and depth of the area. Interceptor trenches should not be continuous and cover the entire area in order to completely confine the flow of the ground water. Dewatering wells can work as well as interceptor trenches. The wells can be set up at greater depths as well. They are good ground improvement methods, too.
How Interceptor Trenches Work
An interceptor trench can be done at a waste disposal location without any disturbance of the waste. It can have an extensive affirmative result underneath the wastes. The extraction of ground water when trenches are used retrieves waste parts that could have possibly escaped outside of the waste perimeter.
A channel is formed in the water table that creates a barrier to movement of ground water. The point where the pressure is the lowest in ground water arrangement is the centerline. The flow point of the ground water system cannot go across or away from the center point. This is impossible since the pressure is highest on the sides of the centerline.
The secret to building an interceptor trench is a manufactured trenching machine with a European blueprint. This machine digs the trench, takes out the soil, puts in the drainage pipe and the permeable backfill in one step. The backfill and the drainage pipe are accomplished through a tube attached to the excavating chain and teeth. The system that digs out the trench operates at an elevated speed and tosses the soil off the trencher. The trencher digs at a speed of about 3 feet each minute. It is possible for the trencher to dig around 13 feet in just a few minutes.
Trench Specifications
The maximum length pipe that is installed is 28 feet. The trench is ten inches wide. The tapered width of this trench greatly reduces the expense related to backfill and disposal expenses for the polluted soils. If a wider trench is used, it will require more costly construction methods and disposal expenses.
The drainage pipe put into the trench is constructed of high density, heavy-duty polyethylene. The polyethylene is then enclosed with a fabric sock. The diameter of the pipe is four inches around. The system is operated in a flood condition that lessens the speed of system plugging. A pipe that is packed with ground water lessens the oxygen for microorganisms that might taint the pipe and the permeable backfill.
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Article Source :
http://www.articleseen.com/Article_What is an Interceptor Trench?_238419.aspx
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Author Resource :
The author has an immense knowledge on ground improvement methods. Know more about interceptor trench related info in his website.
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Keywords :
ground improvement methods, interceptor trench,
Category :
Business
:
Business
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