Numerical Simulation Study On Solidify Effect Of Overburden Separated Grouting

The sinkage of the terrene is one of the disasters caused by the coal exploiting. The coal measures stratum are characterized by the bedded sedimentary rock. When coal masses are extracted, the separated strata in the overburden is an inevitable phenomenon. Among the technologies used for against the sinkage, the technology of injecting to the overburden separations is one of the useful methods used recently.The paper carry out similitude material simulation experimentation, go on more systematic discussion and study to speech to production of layer,develop development and close law. Have reached the developed height of separated strata and the distance of working face pushes forward direct proportion. Separated strata comes into between the first pressure and the cyclical pressure..Pass the analysis forming condition's to separated strata, deduce out the height of separated strata calculation formula, discuss the factor affecting separated strata distributing law, ascertain the separated strata grouting space-time location.From crack rock mass grouting diffuses, going ahead of the level flerry queen lifts up a force, consolidate an effect of flerry grouting and energy mehod, several aspect has studied heavy mechanism of slip casting subtraction.By the Plaxis software, calculate the overlying strata strain state being away from being in separated strata grouting at the head and back, analyzing overlying strata strain distribution and deformation law in separated strata grouting at the head and back. Slow down subside effect by fact that the numerical simulation calculates separated strata grouting.