Control Effect Analysis and Engineering Application of Anchor Cable Beam-Truss Structure on Large-Deformation Roadway in Deep Coal Mine

IF 1.2 4区工程技术 Q3 ACOUSTICS

Shock and Vibration Pub Date : 2024-05-24 DOI:10.1155/2024/2987574

En Wang, Shuaifeng Yin, Qifeng Zhao, Qingtao Kang, Xinjian Zheng

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引用次数: 0

Abstract

In response to the shortcomings of the small support scope of single anchor cable and failure to fully utilize the joint anchoring for surrounding rock, this study summarizes the classification of basic support forms for coal mine roadway surrounding rock and clarifies the main composition and mechanism of anchor cable beam-truss structure. A mechanical model of roadway roof beam under the conditions of no support, single anchor cable support, and anchor cable beam-truss structure support at both ends of the roadway is constructed, and the force and maximum bending moment of roadway roof beam under different support types are compared and analyzed. The study clarifies the bending moment reduction rate of anchor cable beam-truss structure relative to unsupported and single anchor cable support and combines numerical simulation to analyze the response laws of anchor cable beam-truss to prestress distribution and stress shell in roadway surrounding rock. Based on the on-site engineering application of a typical large-deformation mining roadway in a deep coal mine, the important role of anchor cable beam-truss structure in ensuring the safety and stability of surrounding rock in deep high-stress and intense-mining large-deformation roadway is revealed, providing technical references for surrounding rock control of similar conditions in deep roadways.

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深部煤矿大变形巷道锚索梁桁结构控制效应分析及工程应用

针对单根锚索支护范围小、不能充分利用围岩联合锚固的缺点，本研究总结了煤矿巷道围岩基本支护形式的分类，明确了锚索梁桁架结构的主要组成和机理。构建了无支护、单锚索支护、巷道两端锚索梁-桁架结构支护条件下的巷道顶梁力学模型，对比分析了不同支护形式下巷道顶梁的受力情况和最大弯矩。研究明确了锚索梁桁架结构相对于无支护和单锚索支护的弯矩减小率，并结合数值模拟分析了锚索梁桁架对巷道围岩预应力分布和应力壳的响应规律。基于某煤矿深部典型大变形开采巷道的现场工程应用，揭示了锚索梁桁架结构在保证深部高应力、高强度开采大变形巷道围岩安全稳定方面的重要作用，为深部巷道类似条件下的围岩控制提供了技术参考。

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来源期刊

Shock and Vibration 物理-工程：机械

CiteScore

3.40

自引率

6.20%

发文量

384

审稿时长

3 months

期刊介绍： Shock and Vibration publishes papers on all aspects of shock and vibration, especially in relation to civil, mechanical and aerospace engineering applications, as well as transport, materials and geoscience. Papers may be theoretical or experimental, and either fundamental or highly applied.