Influence of hydrodynamic impact on degassing of steep coal seam at the top of the overhead longwall

2015 ◽  
pp. 369-372 ◽  
Author(s):  
V Gavrilov ◽  
V Vlasenko ◽  
O Moskovskiy
Keyword(s):  
Coal Seam ◽  
Hydrodynamic Impact

scholarly journals Numerical model of fracture formation in a coal seam

2021 ◽  
Vol 330 ◽  
pp. 04009
Author(s):  
Maxim Makeev ◽  
Sergei Sokolov ◽  
Anastasiya Kolmakova
Keyword(s):  
Rock Mass ◽  
Numerical Model ◽  
Coal Seam ◽  
System Development ◽  
Recovery Process ◽  
Fracture System ◽  
Mathematical Software ◽  
Hydrodynamic Impact ◽  
Software Packages ◽  
Fracture Formation

The article discusses the recovery process of fracture system formation after hydraulic fracturing in a coal seam, based on the conducted seismic studies using modern mathematical software packages. Model concepts of the fractures system development under hydrodynamic impact on a rock mass are considered, which make it possible to assess the nature of fractures propagation.

scholarly journals Seismic monitoring of hydrodynamic impact on coal seam at interval hydraulic fracturing

2019 ◽  
Vol 377 ◽  
pp. 012034 ◽  
Author(s):  
V I Klishin ◽  
O V Taylakov ◽  
G Yu Opruk ◽  
M P Makeev ◽  
S V Sokolov ◽  
...  
Keyword(s):  
Coal Seam ◽  
Hydraulic Fracturing ◽  
Seismic Monitoring ◽  
Hydrodynamic Impact ◽  
Interval Hydraulic Fracturing

scholarly journals Hydrodynamic impact on coal mass before crossing the most outburst-prone coal seams

2019 ◽  
Vol 109 ◽  
pp. 00112
Author(s):  
Vasyl Vlasenko ◽  
Dmytro Zhytlonok
Keyword(s):  
Coal Seam ◽  
Experimental Studies ◽  
Coal Mass ◽  
State Enterprise ◽  
Coal Seams ◽  
Dynamic Activity ◽  
Hydrodynamic Impact ◽  
Gas Dynamic ◽  
Mine Workings ◽  
Hydrodynamic Effects

The results of experimental studies of hydrodynamic effects (HDI) in industrial conditions are given. The HDI is designed to reduce the gas-dynamic activity of the coal seam and the rocks surrounding it. HDI was applied to the coal seam before it crossed the mine workings. The conditions for the implementation of HDI in industrial conditions Separate Enterprise “Mine “Tsentralna” State Enterprise “Toretskvuhillia” are described. The results of HDI on coal seams m2 -“Tonkyi” and m3 -“Tovstyi” are given. The parameters of the HDI method for outburst-prone coal seam before its crossing by mine workings are corrected.

On the Possibility of Coalbed Methane Extraction as a Source of Energy under the Hydrodynamic Impact on the Outburst Coal Seam

2017 ◽  
Vol 25 ◽  
pp. 106-112 ◽  
Author(s):  
Ruslan Agaiev ◽  
Vasyl Vlasenko ◽  
Kateryna Dudlia ◽  
Maryna Kyrychenko ◽  
Dmytro Prytula
Keyword(s):  
Coal Seam ◽  
Coalbed Methane ◽  
Gas Extraction ◽  
Cogeneration Plant ◽  
Emergency Protection ◽  
Hydrodynamic Impact ◽  
Coal Mine Methane ◽  
Free Process ◽  
Coal Deposits ◽  
Outburst Coal Seam

In this article the possibility of methane gas extraction in coal deposits exploitation is considered. Experimental data on the application of hydrodynamic impact on a gas-saturated outburst coal seam prior to its baring in order to reduce gasdynamic activity due to an intensification of methane emission are presented. Also a structural and technological scheme of degassing pipelines that includes emergency protection and monitoring of coal mine methane parameters in real-time mode to ensure a safe, trouble-free process of its transportation to the cogeneration plant for further utilization is proposed.

scholarly journals Mathematical model of the cracking process in the coal-rock massif under hydrodynamic impact

2019 ◽  
Vol 109 ◽  
pp. 00111
Author(s):  
Vasyl Vlasenko ◽  
Kateryna Dudlia ◽  
Maryna Kyrychenko
Keyword(s):  
Mathematical Model ◽  
Coal Seam ◽  
Rock Massif ◽  
Inverse Filtering ◽  
Fluid Filtration ◽  
Hydrodynamic Impact ◽  
Coal Rock ◽  
Cracking Process ◽  
Power And Energy ◽  
The Mathematical Model

The physics of hydrodynamic impact (HDI) is in the softening of the coal seam due to the generation of alternation stress in it. Stress is carried out due to injection and discharge of fluid into the coal seam in the filtration mode. The mathematical model of the processes occurring in the coal massif under HDI was developed. The model allows to determine the nature of the coal destruction in forward and inverse filtering of fluid in the massif. Cracking in the process of fluid filtration is achieved while simultaneously fulfilling two criteria: power and energy.

Effect of hydrodynamic impact and cavitation on oil flow characteristics

2019 ◽  
pp. 46-50
Author(s):  
V.N. Petrov ◽  
◽  
F.M. Galimov ◽  
L.A. Akhmetzyanova ◽  
S.V. Petrov ◽  
...  
Keyword(s):  
Flow Characteristics ◽  
Hydrodynamic Impact ◽  
Oil Flow

Phosphorus minerals in tonstein; coal seam 405 at Sośnica-Makoszowy coal mine, Upper Silesia, southern Poland

2013 ◽  
Vol 63 (2) ◽  
pp. 271-281 ◽  
Author(s):  
Magdalena Kokowska-Pawłowska ◽  
Jacek Nowak
Keyword(s):  
Trace Elements ◽  
Coal Seam ◽  
Mineral Composition ◽  
Coal Mine ◽  
Chemical Compositions ◽  
Coal Basin ◽  
Upper Silesia ◽  
Southern Poland ◽  
Basin Area

Abstract Kokowska-Pawłowska, M. and Nowak, J. 2013. Phosphorus minerals in tonstein; coal seam 405 at Sośnica- Makoszowy coal mine, Upper Silesia, southern Poland. Acta Geologica Polonica, 63 (2), 271-281. Warszawa. The paper presents results of research on tonstein, which constitutes an interburden in coal seam 405 at the Sośnica- Makoszowy coal mine, Makoszowy field (mining level 600 m), Upper Silesia, southern Poland. The mineral and chemical compositions of the tonstein differ from the typical compositions described earlier for tonsteins from Upper Silesia Coal Basin area. Additionally, minerals present in the tonsteins include kaolinite, quartz, kaolinitised biotite and feldspars. The presence of the phosphatic minerals apatite and goyazite has been recognized. The presence of gorceixite and crandallite is also possible. The contents of CaO (5.66 wt%) and P2O5 (6.2 wt%) are remarkably high. Analysis of selected trace elements demonstrated high contents of Sr (4937 ppm) and Ba (4300 ppm), related to the phosphatic minerals. On the basis of mineral composition the tonstein has been identified as a crystalline tonstein, transitional to a multiplied one.

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