The methods to calculate expediency of composite degassing pipelines

Purpose. To develop methods for calculating of the expediency to use mine degassing system, made current composites, improve safety in heavily loaded longwalls. Methodology. Solving problems involved analysis studies concerning methane-air mixture removal from stopes while mining gaseous coal seams. Standard schemes gas transmission systems have been considered as well peculiarities transportation using underground vacuum pipelines steel and composites. Findings. Expert evaluation economic replace traditional by modern composite lines available systems, has helped operational indices networks recent polymeric materials. Originality. Methods developed calculate technical parameters network, upgrade reduce expenditures connected with captured wells pump stations. Practical value. Implementation findings introduction innovative engineering solutions long chains, involving minimum joints, scheduled Ukrainian mines.