The dynamics of stresses and deformations in the zone of interface of room and development workings at the underground mining of rock ore deposits, which serves as a source of employee injury, is considered. Control of the mechanism of stresses and deformations development allows to correct the parameters of the second working at the design stage, reduce the results of negative manifestations of the rock pressure.
The method of the rock pressure study are the measurements of stresses and deformations by geophysical and mine surveying method under the conditions of specific ore deposit.
The graphs of the change of lining deformation in time and space in the zone of the interface of workings are differentiated with respect to time of work development. Plots of effective stresses with the description of the nature of growth of the parameters and relevant deformations are characterized. The phases of formation and the nature of stresses influence in the zone of working junction with the graphical interpretation study results are determined. The possibility of rapid response to the nature and parameters of rock pressure are identified.
The established regularities of stress development in the zone of mass weakening are applicable for correct prediction of the state of mass with obtaining an economic effect by reducing ore dilution and reducing the risk to those employed in mining practice.