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, an...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/2373133 |
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| _version_ | 1850220836865179648 |
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| author | Wei Wang Jingjing Liu Xueming Zhang Jing Chen |
| author_facet | Wei Wang Jingjing Liu Xueming Zhang Jing Chen |
| author_sort | Wei Wang |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-7b9062f642a344d9b8f386fe10fbb43d |
| institution | OA Journals |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-7b9062f642a344d9b8f386fe10fbb43d2025-08-20T02:06:54ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/2373133Researches on the Excavation Disturbance of Shield Tunnel in Sandy Cobble GroundWei Wang0Jingjing Liu1Xueming Zhang2Jing Chen3China Hebei Construction and Geotechnical Investigation Group Ltd.China Hebei Construction and Geotechnical Investigation Group Ltd.School of Civil EngineeringSchool of Civil EngineeringThe 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.http://dx.doi.org/10.1155/2022/2373133 |
| spellingShingle | Wei Wang Jingjing Liu Xueming Zhang Jing Chen Researches on the Excavation Disturbance of Shield Tunnel in Sandy Cobble Ground Geofluids |
| title | Researches on the Excavation Disturbance of Shield Tunnel in Sandy Cobble Ground |
| title_full | Researches on the Excavation Disturbance of Shield Tunnel in Sandy Cobble Ground |
| title_fullStr | Researches on the Excavation Disturbance of Shield Tunnel in Sandy Cobble Ground |
| title_full_unstemmed | Researches on the Excavation Disturbance of Shield Tunnel in Sandy Cobble Ground |
| title_short | Researches on the Excavation Disturbance of Shield Tunnel in Sandy Cobble Ground |
| title_sort | researches on the excavation disturbance of shield tunnel in sandy cobble ground |
| url | http://dx.doi.org/10.1155/2022/2373133 |
| work_keys_str_mv | AT weiwang researchesontheexcavationdisturbanceofshieldtunnelinsandycobbleground AT jingjingliu researchesontheexcavationdisturbanceofshieldtunnelinsandycobbleground AT xuemingzhang researchesontheexcavationdisturbanceofshieldtunnelinsandycobbleground AT jingchen researchesontheexcavationdisturbanceofshieldtunnelinsandycobbleground |