Coal-rock Mechanical Characteristic Analysis Of Uncovering Coal In Crosscut And Numerical Simulation

Coal-gas-outbrust is always the major disaster of coal mine manufacturing. Once it happens, it's very possible to cause people die and property loss. If we want to prevent the coal-gas-outbrust form happening, it's very important to do some researches on solid-fluid coupling in rupture process of gas-filled coal-rock. The field observation and lab testing are constrained by some reasons, for example, human force,material resources,financial resources,safety situation and so on. Moreover, for the development level of mathematics and mechanics is not very high, so it's hard to get analytical answer through analytical method. So numerical approach becomes the first choice.Therefore, firstly, this paper anatomized the physical structure and mechanic-al properties of coal-rock, seepage flowing regulations and properties of gas in c-oal-rock,and interactions between gas and coal-rock in theory; Then, built up the solid-fluid coupling mathematic model, and also simulated the uncovering coal in crosscut systematically by RFPA. Through the simulating test of different condition, for instance, different angle of coal seam, different coal mass strength, different gas pressure, contrasted the evolution process of the stress-field, displacement-field and sound-emission, summarized the regulations.