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煤矿岩巷TBM掘进随掘地震信号特征及其应用

党保全 郭立全 张延喜 任永乐 李圣林

党保全,郭立全,张延喜,等. 煤矿岩巷TBM掘进随掘地震信号特征及其应用[J]. 工矿自动化,2024,50(6):46-53, 60.  doi: 10.13272/j.issn.1671-251x.2024010094
引用本文: 党保全,郭立全,张延喜,等. 煤矿岩巷TBM掘进随掘地震信号特征及其应用[J]. 工矿自动化,2024,50(6):46-53, 60.  doi: 10.13272/j.issn.1671-251x.2024010094
DANG Baoquan, GUO Liquan, ZHANG Yanxi, et al. Features and application of seismic-while-excavating signals during TBM excavation in coal mine rock roadways[J]. Journal of Mine Automation,2024,50(6):46-53, 60.  doi: 10.13272/j.issn.1671-251x.2024010094
Citation: DANG Baoquan, GUO Liquan, ZHANG Yanxi, et al. Features and application of seismic-while-excavating signals during TBM excavation in coal mine rock roadways[J]. Journal of Mine Automation,2024,50(6):46-53, 60.  doi: 10.13272/j.issn.1671-251x.2024010094

煤矿岩巷TBM掘进随掘地震信号特征及其应用

doi: 10.13272/j.issn.1671-251x.2024010094
基金项目: 安徽省高校自然科学研究项目(2023AH051186) ;安徽理工大学引进人才基金项目(2023yjrc21)。
详细信息
    作者简介:

    党保全(1971—),男,安徽六安人,高级工程师,主要从事矿井地质防治水技术管理工作,E-mail:3043229636@qq.com

    通讯作者:

    李圣林(1993—),男,山东滨州人,讲师,博士,研究方向为矿井地球物理勘探,E-mail:shenglinli929@163.com

  • 中图分类号: TD412.5

Features and application of seismic-while-excavating signals during TBM excavation in coal mine rock roadways

  • 摘要: 随掘地震超前探测技术可实现探掘平行,为巷道快速智能掘进场景下实时、精准地质保障提供了可能。随掘震源产生的是复杂、变频、连续信号,信号特征认知直接影响数据处理与成像精度,而目前针对岩巷全断面掘进机(TBM)随掘地震信号特征的认知仍不清晰,且暂时还没有针对性开展过信号处理与成像研究工作。针对上述问题,以谢桥煤矿瓦斯治理巷TBM随掘地震超前探测试验为例,分析了刀盘先导信号与岩壁接收信号的时间域、频率域及时频域特征:岩巷TBM随掘地震信号中不同振幅能量成分比例呈现金字塔形,但分布随机,不对称程度较高;机械运转信号能量较大,刀盘先导信号强度是岩壁接收信号的200倍左右;频率域变频特征明显;机械运转信号基础频率较低,刀盘先导信号频率成分主要集中在10~80 Hz与150~200 Hz,主频为36.99 Hz,岩壁接收信号频率成分主要集中在50~200 Hz,主频为137.97 Hz;刀盘先导信号较岩壁接收信号时频域能量团分布更为规则,多次震源激发现象明显,能量团之间的差异性特征表明了多次震源激发时振幅能量与持续时间的随机性。利用脉冲化算法与绕射叠加偏移成像方法对岩巷TBM随掘地震信号进行数据处理与成像试验,结果表明:① 脉冲化等效单炮记录与利用常规震源得到的超前探测单炮记录特征一致性较强,同相轴清晰且连续性较好,可满足现场探测分析需要。② 对探测范围内岩体情况的超前预报结果与实际揭露情况一致,说明岩巷TBM随掘地震超前探测可提供有效地质保障。

     

  • 图  1  岩巷TBM循环作业流程

    Figure  1.  TBM circular operation process in rock roadway

    图  2  岩巷TBM随掘地震观测系统

    Figure  2.  TBM seismic-while-excavating observation system in rock roadway

    图  3  TBM停机−空转−破岩−空转−停机全过程先导随掘地震信号

    Figure  3.  Seismic-while-excavating signals for the entire process of TBM from shutdown-idle-rock breaking-idle-shutdown

    图  4  TBM随掘地震信号时间域特征

    Figure  4.  Time domain features of TBM seismic-while-excavating signals

    图  5  TBM随掘地震信号归一化频谱曲线

    Figure  5.  Normalized spectral curve of TBM seismic-while-excavating signals

    图  6  TBM随掘地震信号时频域特征

    Figure  6.  Time-frequency domain features of TBM seismic-while-excavatingc signals

    图  7  TBM随掘地震信号脉冲化处理结果

    Figure  7.  Impulse processing results of TBM seismic-while-excavating signals

    图  8  随掘地震超前探测成像结果

    Figure  8.  Imaging results of seismic-while-excavating advanced detection

    图  9  巷道掘进地质素描

    Figure  9.  Geological sketch of roadway excavating

    图  10  试验巷道围岩揭露情况

    Figure  10.  The exposed of surrounding rock in test roadway

    表  1  试验巷道TBM掘进循环记录

    Table  1.   TBM excavating cycle record in test roadway

    循环轮次 开始时间 结束时间 掘进用时 /min 循环进尺 /m
    1 1:30 1:55 25 0.8
    2 3:00 3:30 30 1
    3 5:40 6:10 30 1
    4 15:30 16:07 37 1.1
    5 17:21 17:56 35 1
    6 20:00 20:35 35 1
    7 22:15 22:50 35 1
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  • 收稿日期:  2024-01-28
  • 修回日期:  2024-06-13
  • 网络出版日期:  2024-07-09

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