Microtunnelling-The Best Solution For Your Digging Needs
Microtunnellng was developed by the Japanese company in the early 1970’s to replace open sewers. Installation of small pipelines into accurate line and level using miniature tunnel boring machines, which is controlled by remote, is called as Microtunnelling and is also mechanized version of pipe jacking. Digging of small tunnels, using microtunnel boring machine is called microtunnelling and also an accurate method of pipe jacking. Microtunnelling provides lining to the tunnel, passage for workers to get to the shield and provides a passage for muck conveyance from the face. To control water pollution and improve the quality of urban areas microtunnelling is preferred the most.
Mircotunnelling is also called as double pass or two stage installation. Special type of system called as double pass system is used where the single pipe installed in of no use. Microtunnelling includes various forms of concrete, clay, plastic, steel and ductile iron. The pipes which are to be installed have fixed length, permanence and strength which are used in specific location and operate in circular shaft. The production of microtunnelling system is done in very systematic way, where every singular part of the system is considered as important. The techniques of microtunnelling meet the specific characteristics of storm water and sanitary sewer installation. This type of process is used for installing sewer pipes of DN250mm to less than 90mm. Only circular sessions can be driven, although the circular pipes with an egg-shaped interior have been installed. As the years go and new technologies developed the need of microtunnelling also increased.
Special type of machine is designed in microtunnelling process. The machines generally used vary from 0.61 to 1.5 meters (2 ft 0.02 in to 4 ft 11 in) but smaller and larger machines have existed. Most of the machines also have video cameras set up in it, which gets more information. The operator has the capability to control the microtunnel boring machine and jacking frame.
We are able to analyze and compare the limitations of microtunnelling if there is a more than one sewer installation done. Microtunnelling has more limitations than that of pipe jacking. The smaller diameters and remote aspect of operation make microtunnelling face problems where soil conditions change rapidly or when obstructions are encountered. Work can be carried out with minimum soil cover and eliminates soil movement and subsidence to a tolerable level.
The process of microtunnelling is economically competitive than any other tunnelling jobs performed. To perform the microtunnelling job well, the design engineers are required to produce the documents necessary at lower costs.
Advantages of microtunnelling;
It reduces disruption of community, liability for personal injury and property damage. It helps in increasing work safety and service life. It also reduces restoration costs.
It is very important to choose the best microtunnelling service providing company. Companies like terrasolutions offer the best microtunnelling services in UK.
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