Vlasenko V.V., Zhytlonok Д.М. Hydrodynamic impact on coal mass before crossing the most outburst-prone coal seams
- Details
- Parent Category: Geo-Technical Mechanics, 2019
- Category: Geo-Technical Mechanics, 2019, № 148
Geoteh. meh. 2019, 148, 30-37
https://doi.org/10.1051/e3sconf/201910900112
Hydrodynamic impact on coal mass before crossing the most outburst-prone coal seams
1Vlasenko V.V., 2Zhytlonok Д.М.
1Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, 2State Enterprise “Toretskvuhillia”
UDC 622.272.633:532.5
Language: English
Abstract. The results of experimental studies of hydrodynamic impact in industrial conditions Separate Enterprise “Mine “Tsentralna” State Enterprise “Toretskvuhillia” are given. The object of study is the processes occurring in a stressed gas-saturated carbonaceous massif with hydrodynamic effects on it. The subject of the study is the parameters of the hydrodynamic effects method on a stressed gas-saturated carbonaceous massif. Research methods - analytical, mine experimental research. The aim of the work is adjusting the parameters of the hydrodynamic impact I method through one underground well to coal seams that are prone to gas-dynamic phenomena before completion them in the conditions SE “Mine “Tsentralna” SE “Toretskvuhillia”.
The hydrodynamic impact is designed to reduce the gas-dynamic activity of the coal seam and the rocks surrounding it. The high efficiency of the hydrodynamic impact method is confirmed by the successful long-term practice of using it for the degassing of coal seams and getting them to a outburst-prone state. This makes hydrodynamic impact one of the most promising direction in the management of the rock mass state with the purpose of its degassing and reduction of gas-dynamic activity. The forces of rock and gas pressure are used more fully as active forces, and the vibrational properties of system "the coal seam – enclosing rocks" are activated with this action method.
Hydrodynamic impact was applied to the coal seam before it crossed the mine workings. The method involves impacting a coal seam through a well drilled from the bottom of an intermediate crosscut. A well is drilled through a rock plug in the soil of a coal seam. The article describes used equipment, parameters of the well, mining geological and technological characteristics of coal seams. The order of experimental studies and the results of hydrodynamic impact on coal seams m2 – “Tonkyi” and m3 – “Tovstyi” are given.
It was found that the hydrodynamic impact on the coal seam through one well with a diameter of 100 mm, which is drilled from the bottom of the open-cut mine with a cross section of up to 12.3 m2, leads the coal seam to a nonoutburst-prone state on a site with a radius of 4.1 to 16.9 m. The method parameters are adjusted.
Keywords: hydrodynamic impact, gas-dynamic phenomena, coal seam, outburst coal seam.
References
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About the authors
Vlasenko Vasyl Victorovych, Candidate of Technical Sciences (Ph.D.), Senior Researcher of Department of Underground Coal Mining Technology, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM NAS of Ukraine), Dnipro, Ukraine, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Zhytlonok Dmytro Musiyovych, Doctor of Technical Sciences (D.Sc.), Adviser, State Enterprise “Toretskvuhillia”, Toretsk, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.