Abstract
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.
Highlights
The prevention of the manifestation of gas-dynamic phenomena (GDP) in coal mines is given special attention and a number of methods have been developed
The aim of the work is adjusting the parameters of the hydrodynamic effects (HDI) method through one underground well to coal seams that are prone to GDP before completion them in the conditions SE “Mine “Tsentralna” SE “Toretskvuhillia”
Equipment for HDI (Fig. 1) on the seam is comprised of pumping station, hydrodynamic impact device (HID) [5], control panel and high-pressure hoses
Summary
The prevention of the manifestation of gas-dynamic phenomena (GDP) in coal mines is given special attention and a number of methods have been developed. A special place is adopted by the processes of impact on the coal seam, which help prevent GDP by changing the state of the coal seam [1]. The high efficiency of the HDI 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. 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. [3, 4]
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