Patent ID: 8444346

Claim:
An installation tool for installation of at least one coupled pair of tubes in a borehole, to a blind end of the borehole, the installation tool comprising: a cylindrical body presenting a cylindrical outer surface; a central passage extending along a central, longitudinal axis of the cylindrical body, from a grout fitting for connecting a grout hose to a central opening at a leading end face of the cylindrical body; at least two slots formed in and extending along the length of the cylindrical outer surface, each slot being open at the cylindrical outer surface of the cylindrical body for receiving therein a portion of the length, including a leading end, of one tube of the coupled pair; and an anchor which fits over the cylindrical body, wherein the anchor comprises: a face plate having tube apertures for receiving the tubes extending therethrough; a retainer ring which is integral with the face plate and which removably fits over one end of the cylindrical body to hold, in cooperation with the face plate, the coupled tube pair within the slots during insertion of the tool into the borehole; and a pair of flexible plates integral with the retainer ring and extending from opposing positions on the retainer ring, approximately in parallel with the longitudinal axis of the cylindrical body.