Krukovskyi, O. P. та Krukovska, V. V. та Bulich, Yu. Yu. та Zemlianaia, Yu. V. (2020) SOME ASPECTS OF DEVELOPMENT AND APPLICATION OF THE BEARING-BOLT SUPPORTING TECHNOLOGY. Resource-saving technologies of raw-material base development in mineral mining and processing. с. 123-142.

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Title in English

SOME ASPECTS OF DEVELOPMENT AND APPLICATION OF THE BEARING-BOLT SUPPORTING TECHNOLOGY

English abstract

Geological and technical conditions in the most of Ukrainian mines are significantly more complicated than in the mines of other leading countries, which produced coal. A simple transition of the accumulated foreign experience of anchor-ing did not give any effective positive results. The goal of this investigation is to study more deeply mechanism of the roof-bolt operation and to specify the space-time laws of geomechanical processes occurred in the system “edge rock – roof bolts”. The research tasks are: to design a mathematic elastoplastic model for calcu-lating stress state of the rocks around the roadway supported with the bolts; to ex-plore support formation around the bolt in the mine roof; to establish a concept of the rock-bolt support interaction, according to which supports unite into a single con-struction that can resist rock pressure; to develop the bearing-bolt supporting tech-nology and expand range of its application. These tasks have been completely resolved. The technology of the reinforced and powerful bearing-bolt supporting designed by our Institute of Geotechnical Mechan-ics was successfully realized in practice in 52 Ukrainian mines for driving more than 700 preparatory roadways and permanent workings. This approach helped to achieve stable state of the roadways under the complicated mining and geological conditions and obtain good economic effect thanks to the cut expenses spent to the roadway supporting and repair.

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