基于耦合动力学的巷道超前支护系统安全适应性研究

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

摘要/Abstract

摘要：

针对复杂形貌巷道顶板条件下,传统超前支护设备安全适应性不足、贴合度低导致的支护效能不佳问题,开展系统的理论与试验分析。基于拉格朗日方程,建立超前支护系统中顶板与主支撑组的耦合动力学模型;采用数值软件对顶梁与横梁架的动态响应进行分析求解,从动力学角度验证了多级柔性超前支护结构的可行性;通过模拟加压支护试验进一步检验该结构的性能。结果表明:在高压加载阶段,C型梁的应变最为显著,其值在10 s稳定波动后随液压力上升而加剧,约20 s时达到峰值,对应最大应力约为452 MPa,低于550 MPa的许用应力,满足设计要求。

关键词: 超前支护, 动力学模型, 主支撑组, 冲击载荷, 振动响应

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

中图分类号:

X936

刘得英. 基于耦合动力学的巷道超前支护系统安全适应性研究[J]. 中国安全科学学报, 2026, 36(S1): 49-54.

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.

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