Research on safety adaptability of roadway advanced support system based on coupling dynamics

doi:10.16265/j.cnki.issn1003-3033.2026.S1.0008

Abstract

Abstract:

In view of poor support efficiency caused by insufficient safety adaptability and low fit of traditional advanced support equipment under the condition of a complex roadway roof, systematic theoretical and experimental analysis was carried out. Based on the Lagrange equation, the coupling dynamic model of the roof and the main support group in the advanced support system was established. The numerical software was used to analyze and solve the dynamic response of the top beam and the beam frame, and the feasibility of the multi-stage flexible advanced support structure was verified from the perspective of dynamics. The performance of the structure was further tested by simulating the pressure support test. The results show that the strain of the C-beam is the most significant in the high-pressure loading stage, and its value increases with the increase of hydraulic pressure after 10 s of stable fluctuation and reaches the peak at about 20 s. The corresponding maximum stress is about 452 MPa, which is lower than the allowable stress of 550 MPa and meets the design requirements.

Key words: advanced support, dynamic model, main support group, impact load, vibration response

CLC Number:

X936

Liu Deying. Research on safety adaptability of roadway advanced support system based on coupling dynamics[J]. China Safety Science Journal, 2026, 36(S1): 49-54.

Figures/Tables 6

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