A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Researches on the Excavation Disturbance of Shield Tunnel in Sandy Cobble Ground
The sandy cobble ground has loose structure, uneven particle size, and random distribution characteristics, which may lead to the local collapse of ground. This paper carried out field tests based on the project of Luoyang urban rail transit. For this, the surface settlement, pore water pressure, and earth pressure in the test section were measured. The excavation disturbance and influence range on the soil layer in each stage of earth pressure balance shield tunneling were studied. Meanwhile, based on the key construction elements in sandy cobble ground, a numerical simulation method was proposed based on shield construction parameters. The disturbance characteristics of deformation, seepage action, and stress state of the sandy cobble ground during shield construction were obtained through numerical calculation. The rationality of the simulation results was verified by the measured tests. The results showed that the measured data were in good agreement with the simulation results. The research results provide a calculation method for predicting the soil disturbance in the earth pressure balance shield construction in a sandy cobble ground.
Researches on the Excavation Disturbance of Shield Tunnel in Sandy Cobble Ground
The sandy cobble ground has loose structure, uneven particle size, and random distribution characteristics, which may lead to the local collapse of ground. This paper carried out field tests based on the project of Luoyang urban rail transit. For this, the surface settlement, pore water pressure, and earth pressure in the test section were measured. The excavation disturbance and influence range on the soil layer in each stage of earth pressure balance shield tunneling were studied. Meanwhile, based on the key construction elements in sandy cobble ground, a numerical simulation method was proposed based on shield construction parameters. The disturbance characteristics of deformation, seepage action, and stress state of the sandy cobble ground during shield construction were obtained through numerical calculation. The rationality of the simulation results was verified by the measured tests. The results showed that the measured data were in good agreement with the simulation results. The research results provide a calculation method for predicting the soil disturbance in the earth pressure balance shield construction in a sandy cobble ground.
Researches on the Excavation Disturbance of Shield Tunnel in Sandy Cobble Ground
Wei Wang (author) / Jingjing Liu (author) / Xueming Zhang (author) / Jing Chen (author)
2022
Article (Journal)
Electronic Resource
Unknown
Metadata by DOAJ is licensed under CC BY-SA 1.0
Sodium-based Bentonite Slurry Improvement to Sandy Cobble Soil During Shield Excavation
| Springer Verlag | 2024
Sodium-based Bentonite Slurry Improvement to Sandy Cobble Soil During Shield Excavation
| Springer Verlag | 2024
A multi-scale analysis method for the simulation of tunnel excavation in sandy cobble stratum
| British Library Online Contents | 2019
Ground collapse caused by shield tunneling in sandy cobble stratum and its control measures
| Online Contents | 2020
Face Stability Analysis of Shield Tunneling in Sandy Cobble Stratum
| British Library Online Contents | 2012