Abstract：Based on engineering practice，corresponding numerical models are set up by numerical analysis software UDEC for analyzing the rupture and collapse of rock strata. The displacement regularity of surrounding rocks of gob-side entry retaining in fully-mechanized top-coal caving mining face is analyzed in detail. The influences of the location of main roof rupture，length of uncaved top-coal at the end of working face，original road support，width of filling belt，filling way and strength of filling belt on the stability of surrounding rocks of gob-side entry retaining in fully-mechanized top-coal caving mining face are systematically analyzed. The results show that in prerequisite for the stability of roof and top coal，the displacement regularity of surrounding rocks should be rationally used to determine the reasonable filling pattern and filling strength，so that the filling stability can be guaranteed and a good result of retaining roadway can be also obtained.
