The thermoplastic problem under the Coulomb condition about the stress-strain state of the soil mass around the chamber with a deposit of radioactive material is considered.

The work contains fundamental experimental studies of the strength and deformability of 23 types of rock, as well as gypsum, concrete, cement stone, and brick ...

Let n interpass healds of width a be left in the chamber of width L to support the roof. Let's find the minimum value of a ...