固体密实充填采煤结构主关键层力学模型

he features of strata movement in solid dense filling mining was analyzed on the action of the main key stratum. And the elastic-like property of solid backfill material was studied, and so did with the coupling relations among the main key stratum, solid backfill material and the underlying coal rock. Based on those, the mechanical model of the main key stratum movement in solid dense filling mining was established. Furthermore, the mechanical stability of the main key stratum and mining influence range of the main key stratum was analyzed. At last, by applying The mechanical model of the main key stratum in solid dense filling mining to the numerical example, good effects were obtained.