scholarly journals Defining of the required parameters of the main fans on the ventilation shaft for the target model of the hard coal mine Y in connection with its decommissioning

2021 ◽  
Vol 906 (1) ◽  
pp. 012052
Author(s):  
Piotr Mocek
Keyword(s):  
Coal Mine ◽  
Mine Water ◽  
Ventilation System ◽  
Drainage System ◽  
Ventilation Network ◽  
Hard Coal ◽  
Target Model ◽  
Ventilation Shaft ◽  
Water Pumping ◽  
Hard Coal Mining

Abstract The article presents the results of the analysis and calculations of the ventilation network of the decommissioned hard coal mine Y for the model of its target operation. After the end of hard coal mining and the liquidation of most of the mining excavations, the former Y hard coal mine will become an element of the drainage system and a protection for other, still active mining plants. In order for the Y excavation to be transformed into a mine water pumping station, its ventilation system should be rebuilt, and new parameters of the main fan should be determined for a smaller network of mining excavations. For this purpose, using the AERO-2016D program by POK “Zachód” Spółka z o.o., the parameters of the ventilation network were simulated in the target model of mine Y after the liquidation of the “Southern” shaft and mining excavations at levels 530m and 660m. The results of the simulation made it possible to select the optimal main fans for the target model of the transformed mine Y.

Radiological evaluation of mine water discharges from hard coal mining in the Fossa Eugeniana Area, Germany

Kerntechnik ◽  
2008 ◽  
Vol 73 (3) ◽  
pp. 101-107
Author(s):  
C. Wanke ◽  
S. Ritzel ◽  
R. Sachse ◽  
R. Michel
Keyword(s):  
Coal Mining ◽  
Mine Water ◽  
Hard Coal ◽  
Radiological Evaluation ◽  
Hard Coal Mining

Underground Research Laboratories in Japan: What Are the Important Factors for Facilities Design?

2003 ◽  
Author(s):  
T. Sato ◽  
S. Mikake ◽  
M. Sakamaki ◽  
K. Aoki ◽  
S. Yamasaki ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Sedimentary Rock ◽  
Mechanical Stability ◽  
Ventilation System ◽  
Sedimentary Rocks ◽  
Crystalline Rock ◽  
Ventilation Network ◽  
Main Stage ◽  
Middle Stage ◽  
Ventilation Shaft

This paper describes the current status of two Japanese off-site Underground Research Laboratories (URLs) Projects, one for crystalline rock and the other for sedimentary rock. This paper is focused on mechanical stability and ventilation, important factors relevant to the design and construction of deep underground facilities. High-pressure inflow, another important factor, will be included in the URL project for crystalline rock. The site of the URL project for crystalline rock is located in Mizunami, Gifu, in the central part of the main island of Japan. The regional geology consists of the Tertiary and Quaternary sedimentary rocks overlying Cretaceous granitic basement. Surface-based investigations, including geological mapping, a seismic refraction survey and shallow borehole investigations, and site preparation at the MIU (Mizunami Underground Research Laboratory) Project site have started in 2002. Numerical analysis is carried out to understand mechanical stability around the openings. The ventilation system design is based on numerical analysis using a ventilation network model. Grouting against the high-pressure inflow is planned. Conceptual design for the MIU at present is as follows: • Two 1,000 m shafts, a Main Shaft (6.5m φ) and a Ventilation shaft (4.5m φ); • Two experimental levels, the Main Stage at 1,000 m and the Middle Stage, at 500 m depths. The site of the URL project for sedimentary rock is located in Horonobe, Hokkaido, north of the main island of Japan. The geology consists of Tertiary sedimentary rocks. Surface-based investigation phase started in 2001. Numerical analysis is carried out to understand mechanical stability of the openings, and to design support. The numerical analysis using ventilation network model is carried out to design the ventilation system and disaster prevention method. Conceptual design for the Hnb-URL at present is as follows: • Two 500 m shafts and a Ventilation shaft; • Two experimental levels, the Main Stage at 500 m and the Middle Stage at 250 m depths.

scholarly journals Issues of photovoltaic installation size choice for a hard coal mine

2019 ◽  
Vol 123 ◽  
pp. 01014
Author(s):  
Sylwester Kaczmarzewski ◽  
Piotr Olczak ◽  
Artur Halbina
Keyword(s):  
Coal Mine ◽  
Renewable Energy Sources ◽  
Electricity Consumption ◽  
Electricity Demand ◽  
Hard Coal ◽  
The European Union ◽  
Upper Silesian Coal Basin ◽  
Hourly Data ◽  
Hard Coal Mining ◽  
Demand Coverage

Poland is the leader in hard coal mining in the European Union and in generation of electricity on this basis, it is related also to low generation of energy from renewable energy sources, in particular photovoltaic installations. The paper analyses the potential of PV installations application for the needs of a selected hard coal mine from the Upper Silesian Coal Basin. Using the hourly data on its electricity consumption in 2018 various sizes of PV installations were selected, a simple payback period was calculated as well as the percentage of energy from the installation use for the current mine operations. It has been shown that in the case of a mine, having available 20 MW of ordered power and average consumption of approx. 14 MW, an installation of 20 MWp rating covers approx. 15% of the electricity demand per year, while for 1 o’clock p.m., i.e. the hour at which most frequently the peak consumption occurred, the share in electricity demand coverage by the PV installation of this power on average amounts to approx. 50% per year.

Water Probe in Coal Mine Working Face

2013 ◽  
Vol 734-737 ◽  
pp. 888-891
Author(s):  
Chen Shi
Keyword(s):  
Hydraulic Conductivity ◽  
Coal Mining ◽  
Coal Mine ◽  
Mine Working ◽  
Mine Water ◽  
Theoretical Calculations ◽  
Drainage System ◽  
Water Inflow ◽  
Interference Method ◽  
Working Face

Water probe in coal mine working face is an important part of the work of Mine Water. When the mine working face close to the aquifer hydraulic conductivity faults, underground rivers, caves and hydraulic conductivity collapse columns; extractive damaging effects, water probe should be done. However, the calculation of water inflow face probe has no feasible way. This paper discussed the theoretical calculations to explore water drilling inflow well group interference method and provides the basis for provision of drainage system for the coal mining enterprises.

scholarly journals Conceptual considerations of the modernization of the main fan stations of mine Y and their economic aspect

2021 ◽  
Vol 906 (1) ◽  
pp. 012053
Author(s):  
Piotr Mocek
Keyword(s):  
Economic Analysis ◽  
Coal Mine ◽  
Investment Decision ◽  
Air Flow ◽  
Flow Regulation ◽  
Economic Aspect ◽  
Hard Coal ◽  
Target Model ◽  
The Right ◽  
Technical Solutions

Abstract In connection with the liquidation of the hard coal mine Y and the change its functionality, it is necessary to modernize the main fan station installed at the “Northern” shaft of mine Y. The article presents concepts of changing the efficiency of WPK 5.0 fans installed in the “Northern” shaft and the methods of air flow regulation for target model of a mine with a reduced network of mining excavations. It discusses four alternative variants of technical solutions. The most effective of them are illustrated with a preliminary economic analysis, the results of which enable the right investment decision to be made.

scholarly journals Heat Treatment and Ventilation Optimization in a Deep Mine

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Xingxin Nie ◽  
Xiaobin Wei ◽  
Xiaochen Li ◽  
Caiwu Lu
Keyword(s):  
High Temperatures ◽  
Mine Water ◽  
Cooling System ◽  
Ventilation System ◽  
Ventilation Network ◽  
Cooling Systems ◽  
Deep Mine ◽  
Working Face ◽  
Deep Pit ◽  
Western Area

In order to address the issue of high temperatures and thermal damages in deep mines, the factors causing downhole heat damage at high temperatures were analyzed, the mine ventilation system was optimized and rebuilt, and a cooling system was established. The proposed cooling system uses mine water as the cooling source, and its features are based on the analysis of traditional cooling systems. The current ventilation system in the 1118 m deep pit of the Jinqu Gold Mine was evaluated, and the ventilation network, ventilation equipment, and ventilation structures near the underground working face were optimized. The low-temperature mine water stored in the middle section of the mine at 640 m depth was used as the cooling source, and a cooling system was established near the 440 m deep middle return well to alleviate the high-temperature and high-humidity conditions of the 280 m deep middle-western area. The results show that the effective air volume in the west wing at 280 m was 3.0 m3/s, the operating ambient temperature was 27.6°C, the relative humidity was reduced to 76%, and the temperature was reduced by 5-6°C after the optimization of the system.

Transient States in the Flow of the Air-Methane Mixture at the Longwall Outlet, Induced by a Sudden Methane Outflow

2014 ◽  
Vol 59 (4) ◽  
pp. 887-896 ◽  
Author(s):  
Przemysław Skotniczny
Keyword(s):  
Numerical Simulation ◽  
Steady State ◽  
Coal Mine ◽  
Air Flow ◽  
Ventilation System ◽  
Geometrical Model ◽  
Hard Coal ◽  
Methane Seepage ◽  
Powered Support ◽  
Methane Mixture

Abstract The paper discusses the results of the numerical simulation of a sudden outflow of the air-methane mixture from behind a powered support, for a longwall ventilated by means of the U-type ventilation system. The calculations were performed using the geometrical model of an actual longwall - the I 100 longwall at the „Sośnica” hard coal mine. The steady state of the air flow in the area of the upper corner was discussed, together with the phenomenon of methane seepage from the goaf area in the vicinity of the longwall outlet. Subsequently, the phenomenon of a sudden methane outflow - followed by the ventilation of headings - was introduced into the study. The obtained results confirm the knowledge provided by the mining practice and experience

scholarly journals The Effect Of Saline Mine Waters Discharge From Hard Coal Mine On The Ecological State Of The Vistula River

2014 ◽  
Vol 17 (2) ◽  
pp. 43-47
Author(s):  
Agnieszka POLICHT-LATAWIEC
Keyword(s):  
Water Quality ◽  
River Water ◽  
Coal Mine ◽  
Mine Water ◽  
Hard Coal ◽  
Mine Waters ◽  
Pollution Levels ◽  
Vistula River ◽  
Coal Mine Water ◽  
Contamination Levels

Abstract The aim of the study was to determine the influence of coal mine waters on water quality in the Vistula River. Water samples for laboratory analysis were collected in 2011 and 2012 on one kilometer long section of the river. Basic parameters were measured at the collection spot. The study asseses the dynamics of physicochemical water properties, fulfillment of the quality requirements necessary to introduce contaminated water into the river, water salinity, quality, and utility values. The study indicates that water quality of the Vistula River has been rapidly decreasing as a result of coal mine water introduction. Water becomes degraded, unfavourable for fish communities and unsuitable for use by people. Coal mine water contamination exceeds allowable pollution levels stated by legal regulations. Self-purification of the river is efficient as contamination levels decrease at the length of the examined section of the river.

Geotechnical Aspects of Revitalisation of Post-Mining Areas - An Example of the Adaptation of Katowice Hard Coal Mine for the New Silesian Museum / Geotechniczne aspekty rewitalizacji terenów pogórniczych - przykład adaptacji KWK „KATOWICE” na nowe muzeum śląskie

2013 ◽  
Vol 58 (2) ◽  
pp. 361-374
Author(s):  
Marek Cała ◽  
Anna Ostręga
Keyword(s):  
Coal Mine ◽  
Mining Area ◽  
Hard Coal ◽  
Historic Buildings ◽  
Mining Operations ◽  
Mining Areas ◽  
Protection Technology ◽  
Hard Coal Mining ◽  
History Of ◽  
Cultural Functions

The article presents the history of the Katowice Hard Coal Mine and the concept of revitalisation taking into consideration the historical development of the mine which today is closed. The concept accepted for realisation assumes adaptation of the post-mining area with its historical infrastructure for cultural functions, and namely for the construction of the New Silesian Museum. Basing the concept on the idea of minimum interference into the existing spatial layout of the former mine has had the result that the museum areas and garages have been designed under the surface of the area adjacent to the historic facilities of the mine. In relation therewith, it was necessary to carry out the works aimed at reinforcing foundations of the historic buildings and protecting the geotechnical pit slopes. The article presents the technological solutions applied to protect the historic buildings, the lift tower, and the excavations for new facilities of the Silesian Museum. Attention was drawn to the instability of the subsoil and of the rock mass due to previous mining operations conducted in the area, the need to adapt the protection technology to the existing conditions as well as the need of constant monitoring of geotechnical works underway.> It is emphasised that the presented investment is part of an ongoing process aimed at preserving the industrial part of the material cultural heritage of Upper Silesia, for centuries connected with hard coal mining and as such it stands a chance to become a showcase not only for Katowice but for the entire region of Silesia.

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