“…However, with active support, S 1 , the radii of the plastic regions were reduced to 121 mm, 165 mm, and 183 mm for 1 day, 2 days, and 5 days after drilling, respectively. e stability of the borehole weakens over time due to the creep of the coal, which is consistent with the results of Liu and Paraschiv-Munteanu et al [42,43]. However, the active support imposed on the borehole can efficiently limit the enlargement of the damage region and the plastic region, resulting in improved stability of the gas drainage borehole.…”