Effect of Strip-filling Parameters on Surface Subsidence in Caocun Coal Mine

The article took Caocun Coal Mine as an example for researching the effect of strip-filling parameters on surface subsidence. The article preliminarily calculated the strip-filling spacing and stowing width based on the key layer theory, then simulated the strip-filling spacing and stowing width's effect on surface subsidence by FLAC^3D numerical simulation software and analyzed their laws, which validated the rationality of calculation method of the key layer theory.