A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Refined model analysis of basement rock degradation mechanism of heavy-haul railway tunnel
This study investigated the degradation mechanism of the surrounding rock of a heavy-haul railway under a water-rich condition, based on the construction of the Taihangshan tunnel for the Wari Railway, a heavy-haul railway that used standard construction practices for axle loads of 30 t. Remote monitoring demonstrated that the coupling effect between the dynamic load of a heavy-haul train and the groundwater leads to the deterioration and hollowing of the surrounding rock. This study clarified the void evolution process and deterioration mechanism of the basement rock under the comprehensive influence of the groundwater–train dynamic load using a refined discrete element numerical simulation. The results revealed that the groundwater was the primary influencing factor in the deterioration of the lower part of the heavy-haul railway tunnel. Rock particles were gradually lost under the effects of long-term erosion due to groundwater and heavy-haul trains, which inevitably damaged the basement rock after the construction was completed. Based on this observation, the critical conditions for the deterioration and attenuation law of the physical parameters of the basement rock were obtained. The results of this study can provide ideas and serve as a reference for the forecasting and disaster treatment of basement rock damage in heavy-haul railway tunnels.
Refined model analysis of basement rock degradation mechanism of heavy-haul railway tunnel
This study investigated the degradation mechanism of the surrounding rock of a heavy-haul railway under a water-rich condition, based on the construction of the Taihangshan tunnel for the Wari Railway, a heavy-haul railway that used standard construction practices for axle loads of 30 t. Remote monitoring demonstrated that the coupling effect between the dynamic load of a heavy-haul train and the groundwater leads to the deterioration and hollowing of the surrounding rock. This study clarified the void evolution process and deterioration mechanism of the basement rock under the comprehensive influence of the groundwater–train dynamic load using a refined discrete element numerical simulation. The results revealed that the groundwater was the primary influencing factor in the deterioration of the lower part of the heavy-haul railway tunnel. Rock particles were gradually lost under the effects of long-term erosion due to groundwater and heavy-haul trains, which inevitably damaged the basement rock after the construction was completed. Based on this observation, the critical conditions for the deterioration and attenuation law of the physical parameters of the basement rock were obtained. The results of this study can provide ideas and serve as a reference for the forecasting and disaster treatment of basement rock damage in heavy-haul railway tunnels.
Refined model analysis of basement rock degradation mechanism of heavy-haul railway tunnel
Zheng Li (author) / Ziqiang Li (author) / Ruyi Cai (author) / Yang Hua (author) / Lin Wang (author) / Dongming Gu (author)
2021
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under CC BY-SA 1.0
Study of the basement structure load under the dynamic loading of heavy-haul railway tunnel
| Taylor & Francis Verlag | 2020
Heavy haul railway tunnel group ballastless track and construction method thereof
| European Patent Office | 2024
Dedicated heavy haul export railway lines
British Library Online Contents | 2004
Optimization of heavy haul railway tunnel lining based on ultimate bearing capacity
| DOAJ | 2022