Methodology of observations during work in conditions of deformation of arch support to improve the safety of workers

Abstract

Safety of works is always a priority. In the conditions of mining operations at present in difficult mining and geological conditions, when the depth of development increases, this issue is not easy to solve. Protective structures and supports, which guard the safety of mining operations, should be under close control. This will reduce the amount of repair work and warn workers about the danger in advance. On the basis of full-scale mine observations of the deformation of the arch support of the preparatory workings located in the area of cleaning works, using the method of linear interpolation of the obtained data, a method of full-scale observations was proposed. To solve this problem, field studies were carried out in the conditions of the Yubileynaya mine of the Pavlogradugol State Enterprise. The obtained data were processed, deformation graphs, graphs of changes in the parameters of the workings over time were built, the necessary analysis of the data obtained was performed and the methodology of mine observations was developed. The scientific novelty consists in providing a new representation of the dependence of the bearing pressure on the rate of deformation processes, which affects the change in the cross-section of the workings, the change in the initial data of the dimensions of the height and width of the workings. Practical significance lies in obtaining the results of the impact of cleaning works on the change of the working cross-section of the workings. The change in the deformation rate of the values of the height of the workings indirectly characterizes the bearing pressure zones. The obtained parameters of the deformation results can be used in the numerical modeling of the deformation of the side rocks, and in the further prediction of dangerous conditions caused by the manifestations of the bearing pressure in the zone of influence of the cleaning works