METHOD FOR INTRODUCING AN ELONGATED ELEMENT, IN PARTICULAR GEO-THERMAL HEAT EXCHANGER, INTO THE SOIL

摘要

Method for introducing en elongated element into a soil, such as a tubular geothermal heat exchanger, comprising the following steps: - in a drilling motion introducing a drill tube into the soil, which drill tube for that purpose has been provided with a drill head at its lower end, - during the drilling motion supplying a liquid, particularly a bentonite mixture, through the space within the drill tube, - introducing the elongated element in the space within the drill tube, - detaching the drill tube from the drill head, - retracting the drill tube while keeping the elongated element in the soil.