矿用扩径式吸能构件吸能防冲特性研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (8) : 134-138.

论文

矿用扩径式吸能构件吸能防冲特性研究

杨巨文1,2，唐治1，何峰1，张莹莹1，于永江11

作者信息 +

Analysis on energy absorption and anti-impact properties of mine diameter expanding energy absorption components

Yang Ju-wen1,2, Tang Zhi1, HE Feng1, Zhang Ying-ying1, YU Yong-jiang1

Author information +

文章历史 +

摘要

为增强液压立柱的防冲性能，有效防治煤矿冲击地压，或在一定程度上减小冲击地压事故造成的损失，提出了一种与液压立柱结合使用的扩径式吸能构件。采用理论分析和试验研究方法，对构件吸能防冲特性进行研究，结果表明：轴向压缩下扩径式吸能构件具有非常好的稳定性和可重复性的变形破坏模式，且构件变形后向四周膨胀值仅为薄壁圆管厚度，几乎不占用其它空间。扩径式吸能构件压缩过程中具有较为理想的力-位移曲线。扩径式吸能构件冲程效率不受几何尺寸影响，扩径式防冲构件具有较小的载荷波动系数。理论推导得出了构件吸能防冲评价指标，并与试验结果具有较好吻合，为构件选取提供了理论依据。扩径式防冲构件是较为理想的吸能防冲构件。

Abstract

To enhance the anti-impact performance of hydraulic columns , prevent and control the rockburst in coal mine effectively, or to a certain extent, reduce the losses caused by rockburst accident，a kind of diameter expanding energy absorption components combined with hydraulic column is put forward.The energy absorption and anti-impact properties of components are studied by using the methods of theory analysis and experimental study. The results showed that : the diameter expanding energy absorption component under axial pressure has excellent stability and deformation and failure modes of reproducibility.The expansion value of the component after deformation is only equal to the thickness of the thin-walled circular tube,and doesn’t occupy the other space.The diameter expanding energy absorption component has an ideal force-displacement curve in the process of compression. Geometry size has no effect on the stroke efficiency of the diameter expanding energy absorption component, and the diameter expanding anti-impact component has a smaller load fluctuation coefficient.The energy absorption and anti-impact evaluation index of components is obtained through theoretical derivation, and it is in good agreement with the experimental results. This provides a theoretical basis for components selection. The diameter expanding anti-impact component is an ideal energy absorption and anti-impact component.

导出引用

杨巨文1,2，唐治1，何峰1，张莹莹1，于永江11. 矿用扩径式吸能构件吸能防冲特性研究[J]. 振动与冲击, 2015, 34(8): 134-138

Yang Ju-wen1,2, Tang Zhi1, HE Feng1, Zhang Ying-ying1, YU Yong-jiang1. Analysis on energy absorption and anti-impact properties of mine diameter expanding energy absorption components[J]. Journal of Vibration and Shock, 2015, 34(8): 134-138

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