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2024 04 v.6;No.25 23-33
煤岩组合体冲击倾向性对超低摩擦型冲击地压的影响机制
基金项目(Foundation): 国家自然科学基金资助项目(51974148);; 辽宁省“兴辽英才计划”资助项目(XLYC1807130)
邮箱(Email): huxuejin_hyll@163.com;
DOI: 10.13532/j.jmsce.cn10-1638/td.2024.04.011
中文作者单位:

辽宁工程技术大学力学与工程学院;辽宁大学灾害岩体力学研究所;

摘要(Abstract):

为揭示煤岩组合体冲击倾向性程度对超低摩擦型冲击地压的影响机制,以不同冲击倾向性煤岩组合体为研究对象,在对煤岩组合试件进行冲击倾向性测定的基础上,采用自行研制的煤岩界面超低摩擦试验装置,以发生超低摩擦效应时的水平位移、动能、摩擦力为指标,探究煤岩组合体冲击倾向性与垂直应力波扰动频率、扰动振幅之间的关系特征。研究结果表明:(1)受扰动频率影响,弱、强冲击倾向煤岩组合体易发生超低摩擦效应的频率显著影响区分别为2.0~3.0, 2.5~3.5 Hz,且随着冲击倾向性程度的增强,频率显著影响区逐渐右移。(2)相比于弱冲击倾向性煤岩组合体,强冲击倾向性煤岩组合体发生超低摩擦效应时水平位移、动能和摩擦力降幅较大,煤块易发生超低摩擦滑动。(3)随着煤岩组合体剩余能量指数的增大,冲击倾向性程度逐渐增强,动能呈指数规律增大,煤块越易发生超低摩擦滑动。研究结果可为超低摩擦型冲击地压的预测和防治提供参考。

关键词(KeyWords): 煤岩组合体;;冲击倾向性;;剩余能量指数;;煤岩界面;;超低摩擦型冲击地压
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基本信息:

DOI:10.13532/j.jmsce.cn10-1638/td.2024.04.011

中图分类号:TD324

引用信息:

[1]李利萍,胡学锦,潘一山等.煤岩组合体冲击倾向性对超低摩擦型冲击地压的影响机制[J].采矿与岩层控制工程学报,2024,6(04):23-33.DOI:10.13532/j.jmsce.cn10-1638/td.2024.04.011.

基金信息:

国家自然科学基金资助项目(51974148);; 辽宁省“兴辽英才计划”资助项目(XLYC1807130)

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GB/T 7714-2015 格式引文
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