In order to improve the support performance and flexibility,and ensure the stability and reliability of the lifting and moving process,the dynamic characteristics of the column control circuit of the hydraulic system were studied and the overall stability was co-simulated.The results show that when the bearing pressure of the column does not exceed 1 000 kN,the maximum pressure of the rodless chamber of the outer cylinder and the middle cylinder is 42.2 MPa and 69 MPa respectively,and the stability of the column is good;when the bearing pressure is 1 100 kN,the maximum pressure of the rodless chamber of the outer cylinder and the middle cylinder is 52.5 MPa and 83.8 MPa respectively,and the maximum flow rate is about 400 L/min,which can release the pressure in time.Based on the co-simulation of ADAMS and AMESim,the time of falling column and rising column is 11.02 s and 24.98 s respectively,and the maximum inclination angle is about 1.3°.Through the field observation of the hydraulic system,it is concluded that the hydraulic support has good support and stability.It effectively solves the problems existing in the support of filling support in the past and realizes the efficient mining production mode of′coal mining-filling′ two shifts and one cycle.