Abstract. The article reviews new technical solution on equipment provision of vertical shaft utilizing steel headframe of multifunctional purpose. Practice of construction of coal and ore mines provides application of various designs for steel angle headframes which are divided into separate large assembly blocks and constructive elements during assembling operations. Design of these blocks and elements, their weight and dimensions effect the chose of the method of assembling on which economic and technological indicators, as well as duration of down-time, depend on during performance of construction operations in shaft. The technical solution on equipment provision for mine vertical shaft using headframe of multifunctional purpose will allow changing the management construction of vertical shaft. The proposed headframe combines the functions of sinking and operation that eliminates costs for assembling/dissembling of temporary headgear. The constructive design of the headgear allows application of the effective method of assembly and thus to provide improvement of the technical and economic indexes, and high calendar time rate of the shaft construction due to reduction of duration of works on equipment provision for the shaft and to refurbishment of the shaft in order to carry out horizontal mining.

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Properties of several aluminum-graphene composites obtained by three different methods are investigated by Raman spectroscopy, SEM and electrochemical techniques . A two-phase synthesis method under halide melt above the melting point of aluminum yielded the most uniform distribution of graphene flakes in the metal matrix. It is shown that anodic polarization of the Al-graphene composites is different from pure aluminum and dramatically depends on the method of composite synthesis. Composites with uniform distribution of graphene flakes possessing improved electrochemical properties can be considered as perspective anode materials for an aluminum-air battery.

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