矿用防冲方形折纹薄壁构件吸能特性数值分析

唐治;潘一山;李祁;肖永惠;郑文红;马萧

振动与冲击 ›› 2014, Vol. 33 ›› Issue (23) : 87-91.

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PDF(1397 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (23) : 87-91.
论文

矿用防冲方形折纹薄壁构件吸能特性数值分析

  • 唐治,潘一山,李祁,肖永惠,郑文红,马萧
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Numerical Simulation on the energy absorption properties of the mine thin-walled component with square folds for rock burst prevention

  • TANG Zhi,PAN Yi-shan,LI Qi, XIAO Yong-hui, ZHENG Wen-hong,MA Xiao
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摘要

为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,提出了一种矿用防冲方形折纹薄壁构件,构件防冲体现在构件被压溃过程中吸收冲击能和压溃空间给煤岩提供了一定的能量释放空间。采用ABAQUS有限元软件模拟了不同壁厚、轴向堆积不同模块个数的构件的吸能特性,并与常规方形薄壁进行了对比分析。结果表明:(1)方形折纹薄壁构件与常规方形薄壁构件相比有较低的压溃峰值载荷,有较高的总吸能和比吸能,防冲性优势明显。(2)减小折纹薄壁构件的壁厚和减小模块长度来增加构件轴向模块个数均能有效降低压溃峰值载荷,但同时也降低了总吸能和比吸能。根据模拟结果,选定了矿用防冲方形折纹薄壁构件尺寸,并进行了实验研究,证明了模拟的准确性。防冲构件与现有支架相结合使用,可使现有支架成为顶梁防冲支架、底梁防冲支架、两帮防冲支架、防冲液压支柱等。

Abstract

For the effective prevention or reducing the loss of the rock burst in coal mine, a mine thin-walled component with square folds for rock burst prevention was put forward, the rock burst prevention are embodied in the fracturing process in which the component absorbs the impact energy and space to provide the energy release space for the coal rock .The ABAQUS finite element software was used to simulate the energy absorption properties of different wall thickness and number of modules in axial and compare with the conventional rectangular thin-walled analysis. The Result Indicates that (1)the thin-walled component with square folds have the lower crushing peak load and the higher total energy absorption and specific energy-absorption capability, the rock burst prevention effect is remarkable.(2) reducing the wall thickness of the thin-walled component with square folds and reducing the length to increase the module number of the component in axial all could effectively reduce the crushing peak load , but reduce the total energy absorption and specific energy-absorption capability at the same time. According to the simulation results to select the size of the mine thin-walled component with square folds for rock burst prevention, the experimental study was carried out to prove the accuracy of the simulation. The mine thin-walled component with square folds for rock burst prevention was combined with the existing supporting , which can make it act as hydraulic prop and the bumper bracket of top beam 、mudsill and the two sides etc.

关键词

防冲构件 / 冲击地压 / 数值分析 / 方形折纹薄壁构件

Key words

bumper bracket / rock burst / numeric analysis / the thin-walled component with square folds 

引用本文

导出引用
唐治;潘一山;李祁;肖永惠;郑文红;马萧. 矿用防冲方形折纹薄壁构件吸能特性数值分析[J]. 振动与冲击, 2014, 33(23): 87-91
TANG Zhi;PAN Yi-shan;LI Qi;XIAO Yong-hui;ZHENG Wen-hong;MA Xiao. Numerical Simulation on the energy absorption properties of the mine thin-walled component with square folds for rock burst prevention[J]. Journal of Vibration and Shock, 2014, 33(23): 87-91

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