DATABASE OF LONG-TERM INSTRUMENTAL OBSERVATIONS ON THE PROCESS OF EARTH’S SURFACE MOVEMENT DURING THE DEVELOPMENT OF THE PESCHANSKOYE SKARN-MAGNETITE DEPOSIT

Abstract

The Peschanskoye deposit includes several ore ledges – Severopeschanskaya, Southern, Northern and Novopeschanskaya. The deposit has been developed by underground method since 1968. During the development of the Severopeschanskaya and the Southern ledges, the rock displacement developed in an anomalous manner: there were cases of significant displacement of the overlying side and caving to the surface from one mining chamber from a depth of 450 meters. The expected parameters of displacement had to be repeatedly revised because at each moment of time the researchers had to operate with small data sets due to objective reasons.

At this stage work has begun on the development of reserves of a safety pillar for the industrial site of the Severopeschanskaya mine. In this regard to protect the facilities of the industrial site the observation station was reconstructed and observations of the movement process began.

To search for possible predictors of anomalous shear development, a database was created that covers observations since 1974. An array of observation data previously analyzed only fragmentarily due to the sufficiency of 3-4 series to meet the requirements of regulatory documents was introduced into scientific circulation.