Kravchenko A. Тне graund of interchamber support parameters during extraction of precantionary pillars

Precautionary coal pillars under the objects on surface. The ground of the parameters of precautionary pillars working out. Methods of research and apparatus - laboratory researches; mathematical modeling and mathematical processing of received results. Theoretical and practical results - the peculiarities of the forming of bearing ability mechanism of combined coal rock supports is found; the quantitative compressibility dependence of combined supports from their parameters is found/ Novelty - the layer roof sinking dependence from parameters of interchember coal rock supports during precautionary pillars working out by chamber extraction system with full chamber laying by rock is established/ Application degree - methods of interchamber supports parameters determination during precautionary pillars working out is adopted to application in GHK "Donugol". Application sphere - coal industry.