1.南京大学地球科学与工程学院,江苏 南京 210023
2.南京大学(苏州)高新技术研究院,江苏 苏州 215123
王艺澄(2004—),女,本科。主要从事工程地质数值模拟研究。E‑mail:221830150@smail.nju.edu.cn
刘春(1984—),男,教授,博士。主要从事计算工程地质教学科研工作。E‑mail: chunliu@nju.edu.cn
收稿:2024-12-03,
修回:2025-01-20,
纸质出版:2025-04-28
移动端阅览
王艺澄,闵寅通,刘春等.岩土振动信号分布式光纤监测的离散元建模研究[J].防灾减灾工程学报,2025,45(02):307-316.
WANG Yicheng,MIN Yintong,LIU Chun,et al.Research on Discrete Element Modeling of Distributed Optical Fiber Monitoring of Geotechnical Vibration Signals[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(02):307-316.
王艺澄,闵寅通,刘春等.岩土振动信号分布式光纤监测的离散元建模研究[J].防灾减灾工程学报,2025,45(02):307-316. DOI: 10.13409/j.cnki.jdpme.20241203002.
WANG Yicheng,MIN Yintong,LIU Chun,et al.Research on Discrete Element Modeling of Distributed Optical Fiber Monitoring of Geotechnical Vibration Signals[J].Journal of Disaster Prevention and Mitigation Engineering,2025,45(02):307-316. DOI: 10.13409/j.cnki.jdpme.20241203002.
分布式光纤传感(DAS)可获取实时的工程事件振动信号,识别这些信号的特征有利于预警和规避工程灾变风险。为系统地探究不同条件下的DAS信号特征,基于高性能离散元软件MatDEM,建立了岩土体振动信号DAS监测模型,采用弹性Clump模型构建光纤结构体并实时记录相对应变数据,并结合外场重锤下落试验的DAS振动信号数据,从信号的时域特征、频域特征以及信号在振源参数影响下的变化规律三个方面验证了模型的合理性和有效性。研究结果表明,模拟和试验的信号特征具有一致性:信号波形都呈现出单个峰值并快速衰减的特征;信号频率集中,并随着频率增加,振幅逐渐降低;随着重锤下落高度、质量的增加,信号的振幅提高,相应的信噪比增强。模型可用于振动特性机理研究和振动信号大数据生成,有利于进一步的DAS信号解译和人工智能识别。
Distributed acoustic sensing (DAS) can obtain real-time vibration signals from engineering events
and identifying these signal characteristics facilitates early warning and prevention of engineering disasters. To systematically investigate the characteristics of DAS signals under different conditions
a DAS monitoring model for geotechnical vibration signals was established using the high-performance discrete element method (DEM) software
MatDEM. The elastic Clump model was employed to construct optical fiber structures and record relative strain data in real time. By integrating DAS vibration signal data from field drop-weight impact tests
the model's validity and effectiveness were verified from three aspects: time-domain characteristics
frequency-domain characteristics
and variation patterns of signals influenced by vibration source parameters. The results demonstrated consistency between simulated and experimental signal characteristics. The signal waveforms consistently exhibited a single-peak pattern with rapid attenuation. Signal frequencies were concentrated
and amplitudes gradually decreased with increasing frequency. As the drop height and mass of the impact weight increased
the signal amplitudes and corresponding signal-to-noise ratios increased. This model can be used for research on vibration mechanism characteristics and for generating large-scale datasets of vibration signals
thereby facilitating further interpretation of DAS signals and their recognition through artificial intelligence technology.
么惠全 , 冯伟 . 西气东输管道第三方破坏风险与防控措施 [J]. 油气储运 , 2010 , 29 ( 5 ): 390 ‑ 392,395,317 .
Yao H Q , Feng W . Risk and prevention measures of third‑party damage in the West‑East Natural Gas Pipeline Project [J]. Oil&Gas Storage and Transportation , 2010 , 29 ( 5 ): 390 ‑ 392,395,317 . (in Chinese)
何莎 , 冯强 , 张兰 , 等 . 油气管道应力监测方法对比分析 [J]. 化学工程与装备 , 2023 ,( 5 ): 47 ‑ 49 .
He S , Feng Q , Zhang L , et al . Comparative analysis of stress monitoring methods for oil and gas pipelines [J]. Chemical Engineering & Equipment , 2023 ,( 5 ): 47 ‑ 49 . (in Chinese)
李彬 , 雷明锋 , 李文华 . 运营公路隧道病害对衬砌结构安全性的影响 [J]. 铁道科学与工程学报 , 2011 , 8 ( 5 ): 40 ‑ 45 .
Li B , Lei M F , Li W H . Safety influence of operating highway tunnel caused by sturcture disease [J]. Journal of Railway Science and Engineering , 2011 , 8 ( 5 ): 40 ‑ 45 . (in Chinese)
冯夏庭 , 陈炳瑞 , 明华军 , 等 . 深埋隧洞岩爆孕育规律与机制:即时型岩爆 [J]. 岩石力学与工程学报 , 2012 , 31 ( 3 ): 433 ‑ 444 .
Feng X T , Chen B R , Ming H J , et al . Evolution law and mechanism of rockbursts in deep tunnels:immediate rockburst [J]. Chinese Journal of Rock Mechanics and Engineering , 2012 , 31 ( 3 ): 433 ‑ 444 . (in Chinese)
施斌 , 王镝 , 王霆 , 等 . 隧道健康诊断BOTDR分布式光纤应变监测技术研究 [J]. 岩石力学与工程学报 , 2005 ,( 15 ): 2622 ‑ 2628 .
Shi B , Wang D , Wang T , et al . Study on BOTDR‑based distributed optical fiber strain measurement for tunnel health diagnosis [J]. Chinese Journal of Rock Mechanics and Engineering , 2005 ,( 15 ): 2622 ‑ 2628 . (in Chinese)
毛江鸿 . 分布式光纤传感技术在结构应变及开裂监测中的应用研究 [D]. 杭州 : 浙江大学 , 2012 .
Mao J H . Research on application of distributed optical fiber sensor in structural strain and cracking monitoring [D]. Hangzhou : Zhejiang University , 2012 . (in Chinese)
朱鸿鹄 , 施斌 , 严珺凡 , 等 . 基于分布式光纤应变感测的边坡模型试验研究 [J]. 岩石力学与工程学报 , 2013 , 32 ( 4 ): 821 ‑ 828 .
Zhu H H , Shi B , Yan J F , et al . Physical model testing of slope stability based on distributed fiber‑optic strain sensing technology [J]. Chinese Journal of Rock Mechanics and Engineering , 2013 , 32 ( 4 ): 821 ‑ 828 . (in Chinese)
Kenneally B , Musimbi O M , Wang J , et al . Finite element analysis of vibratory roller response on layered soil systems [J]. Computers and Geotechnics , 2015 , 67 : 73 ‑ 82 .
Xu Z , Khabbaz H , Fatahi B , et al . Real‑time determination of sandy soil stiffness during vibratory compaction incorporating machine learning method for intelligent compaction [J]. Journal of Rock Mechanics and Geotechnical Engineering , 2022 , 14 ( 5 ): 1609 ‑ 1625 .
Zhang R Y , Dai H L , Wang Y D . Vibratory compaction response based on the contact model of roller‑subgrade system [J]. Construction and Building Materials , 2022 , 351 : 128798 .
Cundall P A , Strack O D . A discrete numerical model for granular assemblies [J]. Geotechnique , 1979 , 29 ( 1 ): 47 ‑ 65 .
朱遥 , 刘春 , 刘辉 , 等 . 颗粒形态对砂土抗剪强度影响的试验和离散元数值模拟 [J]. 工程地质学报 , 2020 , 28 ( 3 ): 490 ‑ 499 .
Zhu Y , Liu C , Liu H , et al . Experiment and discrete element numerical simulation for influence of particle morphology on shear strength of sand [J]. Journal of Engineering Geology , 2020 , 28 ( 3 ): 490 ‑ 499 . (in Chinese)
顾颖凡 , 卢毅 , 刘兵 , 等 . 基于离散元法的水力压裂数值模拟 [J]. 高校地质学报 , 2016 , 22 ( 1 ): 194 ‑ 199 .
Gu Y F , Lu Y , Liu B , et al . Numerical simulation of hydraulic fracturing based on discrete element method [J]. Geological Journal of China Universities , 2016 , 22 ( 1 ): 194 ‑ 199 . (in Chinese)
朱晨光 , 刘春 , 施斌 , 等 . 边坡稳定性温度效应数值模拟研究 [J]. 高校地质学报 , 2018 , 24 ( 1 ): 122 ‑ 127 .
Zhu C G , Liu C , Shi B , et al . Numerical simulation of the influence of temperature field on slope stability [J]. Geological Journal of China Universities , 2018 , 24 ( 1 ): 122 ‑ 127 . (in Chinese)
王慧强 . 基于离散元法的振动压实过程仿真及其试验研究 [D]. 西安 : 长安大学 , 2018 .
Wang H Q . DEM simulation of drum‑soil interaction of vibratory roller during the static rolling [D]. Xi'an : Chang'an University , 2018 . (in Chinese)
Van der Linde J . Discrete element modeling of a vibratory subsoiler [D]. Stellenbosch : University of Stellenbosch , 2007 .
Zhang X , Zhao C , Zhai W . Dynamic behavior analysis of high‑speed railway ballast under moving vehicle loads using discrete element method [J]. International Journal of Geomechanics , 2017 , 17 ( 7 ): 04016157 .
刘春 , 范宣梅 , 朱晨光 , 等 . 三维大规模滑坡离散元建模与模拟研究——以茂县新磨村滑坡为例 [J]. 工程地质学报 , 2019 , 27 ( 6 ): 1362 ‑ 1370 .
Liu C , Fan X M , Zhu C G , et al . Discrete element modeling and simulation of 3‑Dimensional large‑scale landslide—Taking Xinmocun landslide as an example [J]. Journal of Engineering Geology , 2019 , 27 ( 6 ): 1362 ‑ 1370 . (in Chinese)
Yan Y , Cui Y F , Huang X H . Combining seismic signal dynamic inversion and numerical modeling improves landslide process reconstruction [J]. Earth Surface Dynamics , 2022 , 10 : 1233 ‑ 1252 .
Lindsey N J , Dawe T C , Ajo‑Franklin J B . Illuminating seafloor faults and ocean dynamics with dark fiber distributed acoustic sensing [J]. Science , 2019 , 366 ( 6469 ): 1103 ‑ 1107 .
Hartog A , Conduit A , Payne D . Variation of pulse delay with stress and temperature in jacketed and unjacketed optical fibres [J]. Optical and Quantum Electronics , 1979 , 11 : 265 ‑ 273 .
Carr J , Saikkonen S , Williams D . Refractive index measurements on single‑mode fiber as functions of product parameters, tensile stress, and temperature [J]. Fiber & Integrated Optics , 1990 , 9 ( 4 ): 393 ‑ 396 .
苑立波 . 温度和应变对光纤折射率的影响 [J]. 光学学报 , 1997 ,( 12 ): 114 ‑ 118 .
Yuan L B . Influence of temperature and strain on the refractive index of optical fiber [J]. Acta Optica Sinica , 1997 ,( 12 ): 114 ‑ 118 . (in Chinese)
周仕勇 , 许忠淮 . 现代地震学教程(第一版) [M]. 北京 : 北京大学出版社 , 2010 .
Mora P , Place D . A lattice solid model for the nonlinear dynamics of earthquakes [J]. International Journal of Modern Physics C , 1993 , 4 ( 6 ): 1059 ‑ 1074 .
Qin Y , Liu C , Zhang X , et al . A three‑dimensional discrete element model of triaxial tests based on a new flexible membrane boundary [J]. Scientific Reports , 2021 , 11 : 4753 .
Liu C . Matrix discrete element analysis of geological and geotechnical engineering [M]. Beijing : Science Press Beijing , 2021 .
刘春 , 施斌 , 顾凯 , 等 . 岩土体大型三维离散元模拟系统的研发与应用 [J]. 工程地质学报 , 2014 , 22 ( 增1 ): 551 - 557 .
Liu C , Shi B , Gu K , et al . Development and application of large-scale discrete element simulation system for rock and soil [J]. Journal of Engineering Geology , 2014 , 22 ( Sup1 ): 551 - 557 . (in Chinese)
Liu C , Xu Q , Shi B , et al . Mechanical properties and energy conversion of 3D close‑packed lattice model for brittle rocks [J]. Computers & Geosciences , 2017 , 103 : 12 ‑ 20 .
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