The technology of construction of the mine shaft in urban areas. The technology of construction of permanent roof supports. The main characteristics of the objects and supporting construction. The advantages of each technology, as well as its shortcomings.
The volumetric model taking into consideration the driving of the mine through zone of weakening. The results of mathematical modeling on the basis of the method of finite elements of a non-linear deformed ore body with the working out of a vaulted contour are represented. The carrying out of the working is implemented step-by-step transversely to the weakness zone.
The volumetric model taking and performed mathematical modeling the process of construction of the pit under the enclosing wall of secant piles. The results of mathematical modeling on the horizontal displacements of the pit wall. Set out conditions for the construction of the pit and the main technological solutions.
According to geological data which was received at the Yakovlevsky deposit, the volumetric model was developed. This model taking into consideration the driving of the mine through zone of weakening. During the analysis of the stress-strain condition near the mine the character of distribution and numerical results of tangential and longitudinal stresses have been revealed. The zone of weakening affects to the distribution of stresses and displacements around the mine. To select the parameters of the lining support it is necessary to take into consideration weakenings and contacts in the ore massive and the distance for these zones.