Mine pressure behavior law of isolated island working face under extremely close goaf in shallow coal seam.

9 used a numerical simulation method to analyze the top and bottom plate stress law before and after mining back to the working face of the isolated island, the study found that the roadway distance from the bottom plate distance increases, the degree of roadway stress concentration in the surrounding rock shows a decreasing trend, the top and bottom plate stress is released after the working face is stepped back and provides the theoretical basis for the subsequent support of the surrounding rock of the roadway.

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