爆炸载荷作用下矿井密闭墙损伤评估

doi:10.16265/j.cnki.issn1003-3033.2021.01.019

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (1): 132-137.doi: 10.16265/j.cnki.issn1003-3033.2021.01.019

爆炸载荷作用下矿井密闭墙损伤评估

程健维副教授, 张西西

中国矿业大学安全工程学院,江苏徐州 221116

收稿日期:2020-10-17 修回日期:2020-12-12 出版日期:2021-01-28 发布日期:2021-07-28
作者简介:程健维 (1983—),男,山西太原人,博士,副教授,主要从事煤矿安全爆炸及防护工程研究。E-mail: Cheng.Jianwei@cumt.edu.cn。
基金资助:
江苏省自然科学基金面上项目资助(BK20181355)。

Damage assessment of mine seal under blast impact load

CHENG Jianwei, ZHANG Xixi

School of Safety Engineering, China University of Mining and Technology, Xuzhou Jiangsu 221116, China

Received:2020-10-17 Revised:2020-12-12 Online:2021-01-28 Published:2021-07-28

摘要/Abstract

摘要： 为探究煤矿井下常见的典型砖墙密闭墙抗爆性能,采用ANSYS软件建立数值模型,研究爆炸冲击作用下密闭墙的损伤情况。首先,分析瓦斯爆炸的特点和其导致的冲击波压力在巷道内传播特性,预测冲击波的压力强度幅值;然后,建立密闭墙数值模型,设计并完成多种冲量及压力加载方式组合条件下对墙体的冲击模拟数值试验;最后,通过自定义的损伤变量及试验结果,绘制密闭墙的P-I曲线损伤图。结果表明:不同冲击组合方式下密闭墙受到的损伤状态差别较大,因现实中可能发生的瓦斯爆炸特征较为复杂,可以利用给出的密闭墙损伤临界线方程及P-I曲线损伤图,快速评估在其他爆炸冲击条件下墙体损伤状态。

关键词: 密闭墙, 损伤评估, 瓦斯爆炸, P-I曲线, 冲击载荷

Abstract: In order to study anti-explosion performance of typical brick seals in coal mines, ANSYS software was used to establish a numerical model to study damage of seals under explosion impact. Firstly, characteristics of gas explosion and propagation characteristics of shock wave pressure caused by it in roadway were analyzed, and pressure intensity amplitude of shock waves was predicted. Then, a numerical model of seals was established and simulation experiments of impacts under various impulse and pressure loading modes were designed and conducted. Finally, by using self-defined damage variables and simulation results, P-I curve damage diagram of brick seals was made. The results show that damage state of seals under different combinations of impacts varies significantly. As explosion in reality may be more complex, damage threshold equation and P-I curve damage diagram of brick seals obtained in this paper can be used to determine damage state of seals under other explosion impacts.

Key words: seal, damage assessment, gas explosion, P-I curve, impact load

中图分类号:

X913.4

程健维, 张西西. 爆炸载荷作用下矿井密闭墙损伤评估[J]. 中国安全科学学报, 2021, 31(1): 132-137.

CHENG Jianwei, ZHANG Xixi. Damage assessment of mine seal under blast impact load[J]. China Safety Science Journal, 2021, 31(1): 132-137.

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爆炸载荷作用下矿井密闭墙损伤评估

Damage assessment of mine seal under blast impact load

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