![]() ![]() ![]() Then, we applied COMSOL simulation software. ![]() The coefficient of the remaining space was calculated to be 19.5%. We studied the distribution law of the measured abnormal area in the caving goaf, which reflects the distribution law of the remaining space from one aspect. 2 coal mine in the Weibei mining area was detected by the transient electromagnetic method. ![]() To further explore the remaining space distribution law of the collapsed goaf in thick seam fully mechanized top coal caving mining and the effect of coal gangue fluidization filling, the caving goaf of the 3307 fully mechanized top coal caving face in Sangshuping No. The prediction method of residual space in the collapse area and the diffusion law of gangue fluidization filling slurry are two essential points for successfully implementing the technology and maximizing the use of goaf for gangue backfilling and reducing overburden settlement. We proposed the technology of fluidization gangue grouting for filling the collapse area based on our previous research. Because of the problem of gangue discharge and surface subsidence during coal mining, the current research on underground filling mainly focuses on the paste filling, solid filling, and grouting filling of the overburden separation layer after scaffolding. ![]()
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