Long-term practice of deep ore dumps shows that in their operation there are significant difficulties, especially in the harsh climatic conditions of the Arctic Circle ...

The study of destruction of coals and rocks by water jet was carried out in four main directions: 1) the process of destruction of rocks and some artificial materials under the application of; impact and static loads and identification of factors determining the energy intensity of such destruction; 2) the structure and parameters of free high-pressure water jets; 3) the process and energy intensity of rock destruction by water jet; 4) mathematical interpretations of laboratory research data and production observations and development of the basics of engineering theory of rock destruction by water jet.