Method and device for introducing water into a soil layer

摘要

Method for introducing water (A) into a layer of soil (2) to infiltrate, comprising the steps of (i) providing a bore (4) formed by a first tube (5) provided, at an outer end, with a drilling head (6) with a central opening (7), (ii) inserting the hole (4) into the ground (1, 2), characterized in that the step (ii) of introducing the hole (4) into the Ground (1, 2) comprises simultaneously supplying a drilling liquid (a) to the drill (4), where the supplied drilling liquid (a) initially ascends through well (c) through the drilling head (6) along the outer side (b) of the first tube (5) until the drill head (6) has reached a depth at which the liquid supplied (a) no longer ascends through the well, and the method further comprises the steps of (iii) ceasing the introduction of the drill (4) into the ground (1, 2) and the supply of drilling liquid (a) to the drill (4) t As soon as the liquid supplied stops rising through the well, (iv) introducing into the first tube (5) an infiltration tube (9) formed by a second tube (10), whose length is at least equal to the length of the first tube (5) and whose outer diameter is smaller than the respective inner diameters of the first tube (5) and of the central opening (7) of the drill head (9), the lower end part (11) of which second tube (10) is provided with perforations and whose wall is otherwise closed, (v) removing the hole (4) from the ground (1, 2), and (vi) supplying the water (A) to the second tube (10) ), where the flow of the water supplied (A) is limited to a value in which there is no water ascending through the well along the outer side of the second tube (10) through the end part (11) of this second tube (10).