Abstract
The deflected mode, rock pressure manifestations, conditions of maintenance of mine workings depending on geological and technological parameters have been studied. Researches have allowed establishing the degree of these parameters impact on the effectiveness of anchoring of mine workings. The paper researches such aspects of the problem as rock pressures, terms of maintenance of mine workings, technological parameters and others. The authors consider the expediency of the introduction of anchor certificates which will allow for stability of the rock mining and a reduction of the expenses on realization and maintenance of mine workings.
Highlights
The maintenance and the increase of the volumes of underground coal mining are possible only at the presence of highly efficient technology of realization and maintenance of development workings, which provide an increase of the volume of mining and preparatory work
The aim of the research is the creation of technology of intensive and safe mining based on identified patterns of behavior of adjacent rocks, optimization of the parameters of flow charts of preparatory work, providing the increase in the functioning efficiency of underground mining practice [1-7]
The maximum value of the normal stresses occurs in the anchor located on the roof of the mine working in the rightmost anchor in a place of its anchoring
Summary
The maintenance and the increase of the volumes of underground coal mining are possible only at the presence of highly efficient technology of realization and maintenance of development workings, which provide an increase of the volume of mining and preparatory work. The conditions of maintaining the mine workings with different types of anchoring in the zone of influence of the stope were studied by the example of intermediate belt entry 49k10-z of lava in the mine named after Kostenko, Karaganda coal basin. 3. The impact of stope In this regard, the study of features of deformation of the rock massif around development workings with anchoring at various incidence angles of the stratum and depth of anchorage, justification of the installation of the anchor support and the definition of the rational sphere of its use are an important task of the mining industry. We studied the influence of the shape of the cross section of the mine working and the incidence angle of the coal seam on the value of the occurring maximum stresses in the rock massif when mounting the working with the anchor support. The distribution of stresses in the zones of country wall rocks surrounding the mine working is presented in figures 4 a and 4 b
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