Effect of excavation by stages on the stress and staain on structures of the underground generator rooms of hydroelectric stations

1972 ◽  
Vol 6 (7) ◽  
pp. 637-649 ◽  
Author(s):  
V. S. Éristov ◽  
Yu. E. Khechinov
Keyword(s):  
Underground Generator

scholarly journals The Usage of UCG Technology as Alternative to Reach Low-Carbon Energy

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3718
Author(s):  
Stefan Zelenak ◽  
Erika Skvarekova ◽  
Andrea Senova ◽  
Gabriel Wittenberger
Keyword(s):  
Coal Gasification ◽  
Process Management ◽  
Low Carbon ◽  
The European Union ◽  
Underground Coal Gasification ◽  
Management Measures ◽  
Underground Generator ◽  
Low Carbon Energy ◽  
Gasification Technology

Countries of the European Union have stated transition to carbon-neutral economy until the year of 2050. Countries with a higher share of coal-fired power generation currently have no solution to end their combustion and use clean, emission-free energy immediately. The solution to this problem in the energy industry appears to be the increased use of natural gas, which significantly reduces CO2 emissions. In this article, we investigated the possibility of using coal in situ, using UCG (underground coal gasification) technology. We focused on verified geological, hydrogeological, and tectonic information about the selected brown coal deposit in Slovakia. This information has been assessed in research projects in recent years at the Technical University. From the abovementioned information, possible adverse factors were evaluated. These factors affect the rock environment around the underground generator by UCG activity. As part of the process management, measures were proposed to eliminate the occurrence of pollution and adverse effects on the environment. In the final phase of the UCG technology, we proposed to carry out, in the boreholes and in the generator cavity, water flushing and subsequent grouting. The proposed are suitable materials for solidification and stabilization. Results of this article´s solutions are crucial in the case of usage of this so-called clean technology, not only in Slovakia but also worldwide.

Deformation of the walls of an underground generator room for a pumped-storage plant during construction

1978 ◽  
Vol 12 (9) ◽  
pp. 892-897 ◽  
Author(s):  
V. M. Mostkov ◽  
Yu. N. Vinogradov ◽  
É. G. Gaziev
Keyword(s):  
Underground Generator ◽  
Pumped Storage
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