Fusion drilling technology is based on unconventional, purely physical methods of destruction and consolidation of rocks associated with changes in their aggregate state as a result of intensive heating in the bottom-hole zone.

In recent years, there have been opportunities to study the internal structure of glacial covers by methods of isotopic and geochemical glaciology as a result of the introduction of new technical means and methods of deep drilling with core sampling into research.

In order to take significant samples of liquid or gas in order to study in detail the material composition of various horizons of glacial covers, the distribution of rare or dispersed chemical elements in them, their isotopic composition, etc. in the practice of glaciological research, the method of drilling wells with melting in the sampling interval of the necessary volume of caverns is widely used.

One of the promising directions for the development and improvement of new drilling methods is the destruction of rocks by melting or vaporizing them under conditions of intense thermal influence in the bottom-hole zone. The efficiency of drilling-melting depends little on the hardness and plasticity of rocks, as well as on external factors, and in this sense has a certain universality, which allows already now to anticipate its advantages over mechanical drilling in some specific conditions of well sinking ...

The regularities of the temperature regime of boreholes and mine workings, especially in conditions of changes in the aggregate state of the surrounding rocks, are described by extremely complex analytical expressions. The concepts of the coefficient of unsteady heat exchange k_τ and the coefficient of heat exchange intensification at the aggregate transition k_agr.