This work aimed to study the cavity mechanism of surrounding rock at the bottom of a tunnel under the combined action of heavy-haul train load and groundwater. The study location was the Taihangshan Mountain Tunnel in Wari Railway, which is the first tunnel in China, constructed according to the 30 tons heavy-haul railway standards. Based on the water and soil pressure data measured in previous, the surrounding rock deterioration range and depth at the bottom of the heavy-haul railway tunnel under different axle loads and surrounding rock conditions were analysed by using a combination of laboratory test and discrete element method. The results showed objective defects in the bottom surrounding rock that appeared after the construction was completed, which provided a channel for groundwater. The groundwater flushed the surrounding rock at the bottom of the heavy-haul tunnels as time passed, and the dynamic action of heavy-haul trains caused the surrounding rock particles to gradually become loose, which was especially noticeable for the defect location in the weak surrounding rock. An increase in the axle load and a deterioration in the surrounding rock condition could aggravate the tunnel bottom cavity. The findings can be used to generate ideas for defects prediction and treatment methods for heavy-haul railway tunnels.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Tunnel Bottom Cavity Laws of Heavy-Haul Railway Tunnel under Train Load and Groundwater in Weak Surrounding Rock Condition


    Weitere Titelangaben:

    KSCE J Civ Eng


    Beteiligte:
    Li, Ziqiang (Autor:in) / Li, Zheng (Autor:in) / Huang, Weiwei (Autor:in) / Xu, Zhifan (Autor:in) / Zhang, Wengang (Autor:in) / Chen, Kunping (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2022-03-01


    Format / Umfang :

    14 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Train Scheduling for Heavy Haul Railway

    Wang, Pei / Zhang, Jie / Feng, Baoheng et al. | Springer Verlag | 2017


    Fatigue damage of a heavy-haul railway tunnel invert under a 33-tonne axle cyclic load

    Wang, Mingnian / Zhao, Yinting / Li, Ziqiang et al. | SAGE Publications | 2020


    Dangerous Condition Monitoring Technology of Heavy-Haul Train

    Liu, Jianxin / Wang, Kaiyun / Zhang, Bin et al. | ASCE | 2010


    Train, new energy heavy haul railway and transportation method

    ZHAN YOUHAO | Europäisches Patentamt | 2021

    Freier Zugriff

    Multi-train linkage heavy haul railway train hook jumping separation prediction method

    GUO JITAN / WEI WEI / ZHANG YUAN et al. | Europäisches Patentamt | 2022

    Freier Zugriff