METHOD OF ELECTROTHERMIC FIXING OF SHAFT OF HOLE AND GEAR FOR ITS IMPLEMENTATION Russian patent published in 2000 - IPC

FIELD: mining industry. SUBSTANCE: invention can be used for fixing unstable and isolation of absorbing intervals of rocks for construction of geological prospecting, operational, hydrogeological, engineering holes of various assignment with employment of easily fusible ecologically pure binding materials. Method provides for fixing of tectonic disturbances, isolation of zones of absorption and fluid manifestations. Heat generator and easily fusible binding material are lowered into zone of fixing of hole drilled in advance. Hole is filled with this material up to required height after which heat generator is lifted to mouth of hole. Fixing zone is additionally filled with inert filling agent, granite aggregate, for example. While heated heat generator is lifted to mouth of hole central part of zone is filled simultaneously with easily fusible material and zone around shaft with inert filling agent. Shaft of hole is fixed with thermally transformed easily fusible and solidifying grouting material. Gear for implementation of method includes heat generator, power supply source, winch, load-carrying cable to suspend heat generator and to channel electric energy, two vessels set immobile one above other on rod that hangs from load-carrying cable. Conical heat insulator is anchored between vessels and heat generator. Lower vessel is filled with easily fusible granulated binding material, upper vessel carries inert filling agent, for instance, granite aggregate. Separable fusible plates and ring electric heaters are installed in bottoms of both vessels. Sealing member is attached to end of heat generator. EFFECT: provision for fixing of zones of tectonic disturbances, isolation of absorption zones and fluid manifestations. 2 cl, 2 dwg