第一作者杨巨文男，博士，高工，1969年5月生

邮箱：yjw8341@126.com

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，张莹莹1，于永江1

(1.辽宁工程技术大学矿业学院,辽宁阜新123000；2. 内蒙古大唐国际锡林浩特矿业有限公司,内蒙古锡林浩特026000)

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。

关键词：吸能防冲；冲击地压；扩径式构件；试验研究

基金项目：国家自然科学

收稿日期：2014-10-17修改稿收到日期：2014-12-02

中图分类号:TD355+.3文献标志码：A

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

YANGJu-wen1,2,TANGZhi1,HEFeng1,ZHANGYing-ying1,YUYong-jiang1(1.College of Mining Engineering, Liaoning Technical University, Fuxin 123000,China;2. Inner Mongolia Datang International Xilinhaote Mining Co., Ltd, Xilingol 026200,China)

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

Key words:energy absorption and anti-imapct; rockburst; diameter-expanding component; experimental study

随着我国国民经济的迅速发展，煤炭的需求量不断增加，煤矿开采深度和难度逐渐加大，冲击地压的发生越来越频繁，煤矿冲击地压矿井越来越多，冲击地压造成的灾害越来越严重[1]。近年来研究发现，大多数冲击地压发生在巷道中，而目前巷道支架大多没有从防冲角度进行支护设计，抗冲击载荷能力有限，不能满足防冲支护发展要求。……