Pliable (flexible) tubing, method for fitting the tubing in a borehole and uses of this tubing

摘要

The invention relates to a tubing (1) intended to be fitted into a borehole (20) so that, when in the deployed position, it covers the side wall of the hole. This tubing is characterised in that, in the folded-up position, it comprises at least four fold lines substantially parallel to its longitudinal axis, to facilitate its insertion into the borehole; its maximum dimension in transverse section being less than the diameter of the borehole. The invention applies quite particularly to the filling of a mining hole with explosives, especially when it is filled with water and when the explosives (40) are sensitive to water or alternatively for loading liquid explosive into cracked ground. The invention also applies to the making of drains or anchoring points. IMAGE