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Wyszukujesz frazę "Hankevich, Valentyn" wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Method and tool for drilling and explosion well expansion in hard rocks
Autorzy:
Antonchik, Volodymyr
Hankevich, Valentyn
Minieiev, Sergyi
Pashchenko, Oleksandr
Buketov, Valentyn
Powiązania:
https://bibliotekanauki.pl/articles/27324372.pdf
Data publikacji:
2023
Wydawca:
Instytut Techniki Górniczej KOMAG
Tematy:
expand of wells
hard rocks
drilling
blasting
energy
directed explosion
rock mass
explosives
wiertnictwo
energia
eksplozja
Opis:
The paper represents the problem of expanding wells in hard and especially hard rocks. The general direction of solving this problem, theprevious methods of solving it and their shortcomings are shown. Anew method of drilling and blasting expansion of wells in strong and especially hard rocks is presented, using the energy of a directed explosion of low power to create a three-dimensional network of cracks in the rock mass around the well. The drawings ofthe tool for drilling and blasting expansion of wells in strong and especially hard rocks at the level of a draft design are given, and the calculation of the explosion energy of a single charge of explosives is carried out, and their mass necessary for such an explosion is determined.
Źródło:
Mining Machines; 2023, 41, 3; 158--167
2719-3306
Pojawia się w:
Mining Machines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Constructional changes of pneumopercussion machines for improving their efficiency
Autorzy:
Antonchik, Volodymyr
Zabolotnyi, Kostiantyn
Hankevich, Valentyn
Maltseva, Vira
Kuts, Oleksandra
Dyczko, Artur
Powiązania:
https://bibliotekanauki.pl/articles/27324346.pdf
Data publikacji:
2022
Wydawca:
Instytut Techniki Górniczej KOMAG
Tematy:
pneumopercussion machines
thermodynamic processes
hammer
compressed air
Opis:
Pneumopercussion machines (pneumatic impact machines) are widely used in all areas of human activity. Also, they are widely used in the mining industry. Unfortunately, their operation is characterized by a low efficiency of compressed air energy usage. In some cases, this level of efficiency is calculated as 15-20%. Such a situation increases the cost of drilling operations significantly. In this article, due to an implementation of a new construction of the equipment, the efficiency of the pneumopercussion machines was increased. This problem is solved by combining the most effective thermodynamic processes of compressed air in the working chambers of machines. Also, a new technical solution for the construction of pneumopercussion machines is suggested by the Authors. The proposed new design is realized by a combination of the most effective thermodynamic processes in the chambers of pneumatic impact machines. A new pneumatic hammer is presented, which allows to reduce compressed air consumption twice during an operation on the surface (in comparison with hammers available on the market). The operation of pneumopercussion machines and the method of calculating geometric parameters are described. The economic performance of the equipment confirms the correctness of the proposed technological solutions.
Źródło:
Mining Machines; 2022, 40, 4; 206--215
2719-3306
Pojawia się w:
Mining Machines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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