METHOD FOR REINFORCING WELL SHAFT AND DEVICE FOR REALIZATION OF SAID METHOD Russian patent published in 2004 - IPC

FIELD: mining industry.

SUBSTANCE: method includes lowering and mounting of profiled pipe in area of complication, which pipe is provided with two bushings connected to its ends. Inner pressure is formed on pipe walls. Pipe diameter is increased until contact is reached with well walls. Pipe is fixed in the well. Into complication area a pipe is mounted, which is made of fusible material and filled with water. The latter is heated by heat generator up to temperature when pipe material softens and pipe diameter increases to contact well walls. After that heat generator is disabled and bushing in contact with it is melted down by electric heating means and heat generator is removed from the pipe as well as electric heating means. Device has profiled pipe equipped with two thick bushings rigidly connected to its ends and mounted on hoisting means. Device is provided with weighting material connected to cable lock and electric heating means mounted below it, placed in upper end bushing, and heat generator, placed in pipe hollow and connected to electric heating means with possible removal of these from the pipe. The latter is made of fusible material and filled with liquid. Bushings are made of the same material as the pipe.

EFFECT: simplified and cheaper technology for reinforcing separate portions of tectonic disruptions, isolating absorption zones and fluid influxes.

2 cl, 3 dwg