In view of the influence of blasting vibration on railway safety in the mine room blasting of Ⅰ-1 orebody,a numerical model of the orebody and railway subgrade was established to evaluate the safety of existing railway subgrade and station.According to the location relationship of the mine room 1 and 2,the sections of 1-1,2-2 and 3-3 were set on the adjacent railway subgrade to monitor the dynamic response.Specifically,the vibration speed,the stress and the strain of each monitoring profile were calculated and analyzed.Analysis shows that the maximum vibration of the railway subgrade is caused by the blasting of mining room 1,the maximum vibration point is located under the railway subgrade of section 1-1,the maximum resultant velocity is 3.412 cm/s and the maximum three-direction velocity is on the Y direction which is 3.392 cm/s.More importantly,the maximum vibration of the station is caused by the blasting of the mining room 2,and the maximum resultant vibration velocity of the station is 0.02005 cm/s,which is the bottom vibration velocity of the railway subgrade.Meanwhile,the vibration velocity of the railway subgrade and station caused by mine room blasting is less than the allowable vibration velocity of blasting safety.During the blasting of mine room 1,the maximum stress occurs on section 1-1.More precisely,the maximum principal stress is 8108.17 Pa,the maximum value of the minimum principal stress is 12409.1 Pa,the maximum shear stress is 5955.34 Pa.However,all stress values do not cause damage to the subgrade.For another,during the blasting of mine room 2,the stress value of section 2-2 of subgrade is the largest.But the maximum stress values are all less than the stress values generated by the 1-1 section subgrade during the blasting of Mine room 1.Besides,the maximum shear strain value generated by the subgrade and station under the mine room blasting is 2.58×10-4ε.It is very small,because the station is far away.In this case,the subgrade and station will not produce obvious deformation.