Impact Moling or Trenchless Technology

Moling, simply put, is a method for laying pipes that does away with the need for a trench. A pneumatic machine, which is referred to as the moling force is used to get through the layers of soil and create a path for the pipe to pass through. Many professionals prefer moling as it means that they don’t have to spend time digging a trench in order to lay water pipes. The use of moling is not restricted to water pipes but is also used for laying the heating coils of home heating pump systems.

Recent innovations in moling now mean that it is easier for the professional to ensure that the path for the pipe is right and to correct where necessary, it can also make curved bores or holes. In preparation for moling the professional will begin by digging a hole that is one or two inches in depth – useful in areas that are difficult to access as the hole can be dug by hand if there is not sufficient room for the use of equipment.

Once the hole is dug the mole is then placed into the earth at the bottom of the pre-dug hole. Another hole is dug where it is estimated the trench would end, which is where the mole emerges after creating the pipe’s path. The mole is cylindrical in shape and made from steel, it’s sixty centimetres long and six centimetres wide. The pulsed, compressed air that drives the mole causes the mole’s head to continue knocking against the soil that is in front of it. Once the mole has tracked the path and been drawn through the exit hole, the pipe can then be passed through it.

Moling is used to make many processes easier to complete, including the installation of water mains, cabling and other underground services. Moling is regarded as a more cost effective and ecologically friendly way of trenching and quicker and cheaper than traditional trenching methods. No prior excavation is necessary where moling is used, which means that there is less disruption to the customer’s property. With moling the earth is not removed but is rather compacted and displaced, causing minimal disruption. Moling is also a preferred method because it is significantly cheaper than the more traditional trenching.

In addition to the laying of pipes, moling is also used for mains repairs and renewals and anything to do with drainage problems. Moling can be used for excavating foundations and concreting and for site clearance.

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