Safety issues when using a museums in unused mining workings

<p>The underground space, which is not used for mining purposes, now serves more like a room for storing various goods, for organizing the production of goods, as mining museums, etc.</p><p>Using such space creates some dualism in its maintenance. On the one hand, it is simply an underground space, used as a storage, on the other hand the characteristics of this space are completely dependent on the natural conditions and properties of the rocks surrounding the mining workings. This is especially true for mining space used as mining museums, where it is unacceptable to cover mining workings walls with solid concrete support that will simply destroy the authenticity of the object. Whether it is necessary to have a mining engineer in the staff of such a museum?</p><p>The authors hold to the concept that regulations for the use of each underground space for use as a museum must be developed by professionals, but this space should be managed by ordinary museum workers, just as it is not necessary to be a professional mechanic to drive a car.</p><p>Besides the air conditioning, removing the water one of the most serious problems in the use of unsupported underground space is the control of the stability of the roof and walls of the workings to provide safety for visiting this museum people.</p><p>The authors propose some solutions to control the stability of mining workings using instrumental observation methods developed specifically for unprofessional workers in such underground museums.</p>

Prediction of ground surface collapse by instrumental observation data on rock mass movements during underground mining

Using the data of long-term surveying at the Saranovsky chrome iron ore deposit, movements of rock mass were analyzed with a view to identifying potential early signs of ground surface collapse. The research findings are unique as one of the instrumental observation series was accomplished on the eve of the ground surface sinking above non-backfilled voids of earlier stoping. It was found that the test area experienced vertical alternating movements, and sinking was preceded by upheaval of ground surface. However, the further analysis revealed no clear cause-and-effect between the event and insufficiency of its study. The subsequent research identified a local cluster of rock mass subsidences at gradually increasing velocities, which showed up a few years before the sink appeared on ground surface above its initiation source. The absence of this cluster zone in the period before the collapse is explained by the damage of check points in this site. Finally, the conclusion is drawn that in certain geological conditions, deformation processes are localized and manifest no visible signs of impact on the enclosing rock mass and ground surface. Manifestations of these processes from the instrumental observations concentrate directly in the local area of their development, which should be taken into account in the analysis and prediction of movements. It is emphasized that the existing and new criteria of hazardous deformation processes should be corrected and updated for geomechanical monitoring of mineral mining objects.

Seismic activity of major hidden faults in the Priamurye region

Based on the data of the relief analysis and the geophysical fields, major submeridional and NW-trending hidden faults are detected in the Priamurye region. The seismic energy calculations are performed for the instrumental observation period given the historical events. The faults showing the highest seismic activity are revealed. The seismic energy released by hidden faults is commensurable with a similar value obtained for the seismoactive faults detected from the geological data.

Dynamic Simulation Model of Visual and Instrumental Observation of a Point Target by a Cosmonaut-Operator While Flying-By

The computer-based dynamic simulation model (DSM) of visual and instrumental observation (VIO) of a point target by a cosmonaut using a pancratic observation device was developed. The DSM is the core model of the simulation models complex (SMC), which calculates the input parameters for it (current ballistic data of rendezvous and environmental parameters). The DSM is based on the hypothesis of the correspondence of the law of the distribution of points of staring to the normal two-dimensional law of the position of a point target in the ellipse of the probabilities of the forecasting position of a space object in orbit.