The Research On Disturbed Effects Of Polyurethane Material'S Expansion Pressure Upon Mine Disaster Prevention

With the practical effects on the rock mass space of improving the broken structure, transferring the failure mechanism, reinforcing fracture network, the polyurethane material is widely applied to the prevention of mine disasters by sealing and plugging method. Furthermore, due to the nature of expansibility, the polyurethane material produces the disturbed effects on the surrounding rocks, which causes the polyurethane material to fill in and compact the broken rock mass in further and strengthens the elastic modulus of rocks themselves, the expectation of improving the intensity of the broken rock mass achieves correspondingly.