MONITORING OF DISPLACEMENT PARAMETERS OF THE AXIS OF THE KLETEVAYA MINE ON THE MINED SPACE TO A DEPTH OF -1390 METERS

Abstract

The purpose of this work is to ensure the safe operation of
mineshafts and permanent mine workings in the conditions of intensive development of the Gaisky underground mine. This work is aimed at reducing the risk of geodynamic phenomena during mining, which is impossible without monitoring the stress state of the deposit, providing information to subsoil users during geological exploration and development of a mineral deposit. Engineering solutions always convince us that the main thing is safety.
This article is a stage in solving this urgent problem, the
solution of which, according to the authors’ opinion, is to
develop a method for assessing and predicting changes in
the state of the main opening workings of the field during
the operation period.
Differentiation of the danger and the degree of impact of
natural and man-made changes in the stress-strain state
on the objects of subsoil use is determined by the position
of the object relative to the boundary zones of heterogeneous structures, in which the stresses and strains exceed the intra-block values and can cause a violation of the object.
The stress state of the concrete lining of mine shafts is
formed as a function of the design parameters of the shaft, the full stress tensor, which includes gravitational-tectonic and time-variable stresses acting in the rock mass at the time of the start of research, taking into account the
physical and mechanical properties of the rock mass, the
modulus of the concrete elasticity, which depends on the
rate of withdrawal and additional stresses, caused by a
subsequent change in the stress field, caused outside the
zone of influence of mining operations by a cyclic change
in natural stresses, and in the zone of influence of the goaf
– by a change in the secondary stress field.
On the basis of direct instrumental measurements of linear parameters at the underground mine of the Gaisky GOK, we revealed the regularities in the formation of the deviation of the axis of the Kletevaya mine shaft towards the mined-out area.
To carry out monitoring, we developed a method of instrumental measurement of the deviation of the mineshaft at various depths.