electromagnetic location (EML)
Radio detection: precise
detection of metal pipes
Electromagnetic location (EML) is an effective technique in which a unique signal is placed on a metal pipe, such as cables or pipes. This signal can be tracked on the surface with a receiver, allowing the location of the pipe to be accurately determined. Thanks to the unique connection of the signal to a specific pipe, the reliability of radio detection is high. When the pipeline is tracked, the exact position is digitally recorded using GPS, 06-GPS or tachymeter. In this way, cables and pipes can be accurately mapped.
crosstalk
For cable clusters
In situations with complex cable clusters, “crosstalk” can occur. This means that the signal from one cable will crosstalk to an adjacent cable, which can affect the accuracy of the measurement. To correct this crosstalk, we often combine radio detection measurements with other techniques such as ground penetrating radar or trial trenching. This combined approach ensures reliable and accurate results, even in complex underground infrastructures.
detection of non-
metal pipes
Non-metallic pipes such as fiberglass, PVC, concrete, sewer pipes and drainage cannot be detected with radio detection. In such cases, we use alternative methods such as ground penetrating radar or manual digging. In addition, we can insert a tendon or probe into the pipe, to which the same radio detection technique is applied as for metal pipes. This method is widely used in the detection of directional drilling of fiber optic cables or in the mapping of municipal sewer pressure pipeline networks.
Innovation
applications
Within TerraCarta, we are constantly working on innovative solutions. One of these innovations is a specially developed pressure vault used for detecting pipes under pressure, such as gas pipelines. This technique makes it possible to insert a tendon into the pipe without gas leakage, allowing us to perform safe and accurate measurements even in complex situations.