Abstract：Because of the unreasonable support parameters and surrounding rock large deformation of gob-side entry retaining in narrow coal pillar face, the influences of different width, strength and filling ratio of entry-side support on deformation and failure of surrounding rock of gob-side retaining in narrow coal pillar face were studied. The results showed that the different width, strength and filling rate of entry-side support had different influence on the stress distribution and deformation of surrounding rock; when the width, strength and filling rate of entry-side support were too low, the roof subsidence couldnot be prevented; while they are too high, the subsidence of the roof was not obvious, and the cost was increased; the width of entry-side support was 2 m, the strength was 30 MPa, and the filling rate was above 95%. It could keep the stability of surrounding rock of entry-side support; the combined support technology of“anchor cable in roadway + flexible formwork concrete of entry-side support + single hydraulic prop + grouting in basic bottom”were put forward and successfully applied in engineering. The application results showed that the maximum displacement of roof-to-floor convergence was600 mm, and the maximum value of two-party approach was 435 mm, which was 55. 5% and 51. 6% of the original deformation. The surrounding rock deformation along the gob-side entry retaining was effectively controlled and met the requirements of ventilation and safe production.

Keyword：narrow coal pillar face;gob-side entry retaining;entry-side support;filling;surrounding rock control;