Calculation of Soil Deformation Caused by Shield Tunneling through the Sludge Layer with Plastic Drainage Plates
Due to a lack of engineering experience, research on ground deformation during shield machine tunneling in sludge layers is limited, especially in areas with plastic drainage plates installed for ground stabilization. When the shield passes through this area, the shield cutterhead may be jammed by t...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/6625132 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832547740884664320 |
|---|---|
| author | Fan Zhang Linchong Huang Yu Liang |
| author_facet | Fan Zhang Linchong Huang Yu Liang |
| author_sort | Fan Zhang |
| collection | DOAJ |
| description | Due to a lack of engineering experience, research on ground deformation during shield machine tunneling in sludge layers is limited, especially in areas with plastic drainage plates installed for ground stabilization. When the shield passes through this area, the shield cutterhead may be jammed by the drainage plates, resulting in excavation surface instability, excess ground deformation, and schedule delay. In this work, a Mindlin solution for ground deformation in such a layer is obtained, considering four factors: the frontal additional pressure generated by the shield cutterhead due to the soil squeezing effect, the uneven lateral friction between the shield shell and the soil, the frontal friction generated by the shield cutterhead when cutting through the drainage plate, and the shield machine restart after shutdown. The results show that the theoretical curve is in good agreement with the measured values. The maximum settlement was approximately 10 m behind the excavation surface, and the maximum uplift was approximately 5 m in front of the excavation surface. The most influential factor among all the studied factors was the additional pressure on the shield cutter, which accounted for approximately 56% of the maximum settlement and 60% of the maximum uplift. The soil settlement mainly occurred within 12 m on both sides of the tunnel axis. The maximum settlements at the different soil depths tested were all directly below the tunnel axis. |
| format | Article |
| id | doaj-art-d82d82fcccbb4b079512ba6c55a2388c |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-d82d82fcccbb4b079512ba6c55a2388c2025-02-03T06:43:37ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/66251326625132Calculation of Soil Deformation Caused by Shield Tunneling through the Sludge Layer with Plastic Drainage PlatesFan Zhang0Linchong Huang1Yu Liang2School of Intelligent Systems Engineering, Sun Yat-Sen University, Shenzhen 518000, ChinaSchool of Aeronautics and Astronautics, Sun Yat-Sen University, Shenzhen 518000, ChinaSchool of Aeronautics and Astronautics, Sun Yat-Sen University, Shenzhen 518000, ChinaDue to a lack of engineering experience, research on ground deformation during shield machine tunneling in sludge layers is limited, especially in areas with plastic drainage plates installed for ground stabilization. When the shield passes through this area, the shield cutterhead may be jammed by the drainage plates, resulting in excavation surface instability, excess ground deformation, and schedule delay. In this work, a Mindlin solution for ground deformation in such a layer is obtained, considering four factors: the frontal additional pressure generated by the shield cutterhead due to the soil squeezing effect, the uneven lateral friction between the shield shell and the soil, the frontal friction generated by the shield cutterhead when cutting through the drainage plate, and the shield machine restart after shutdown. The results show that the theoretical curve is in good agreement with the measured values. The maximum settlement was approximately 10 m behind the excavation surface, and the maximum uplift was approximately 5 m in front of the excavation surface. The most influential factor among all the studied factors was the additional pressure on the shield cutter, which accounted for approximately 56% of the maximum settlement and 60% of the maximum uplift. The soil settlement mainly occurred within 12 m on both sides of the tunnel axis. The maximum settlements at the different soil depths tested were all directly below the tunnel axis.http://dx.doi.org/10.1155/2020/6625132 |
| spellingShingle | Fan Zhang Linchong Huang Yu Liang Calculation of Soil Deformation Caused by Shield Tunneling through the Sludge Layer with Plastic Drainage Plates Advances in Civil Engineering |
| title | Calculation of Soil Deformation Caused by Shield Tunneling through the Sludge Layer with Plastic Drainage Plates |
| title_full | Calculation of Soil Deformation Caused by Shield Tunneling through the Sludge Layer with Plastic Drainage Plates |
| title_fullStr | Calculation of Soil Deformation Caused by Shield Tunneling through the Sludge Layer with Plastic Drainage Plates |
| title_full_unstemmed | Calculation of Soil Deformation Caused by Shield Tunneling through the Sludge Layer with Plastic Drainage Plates |
| title_short | Calculation of Soil Deformation Caused by Shield Tunneling through the Sludge Layer with Plastic Drainage Plates |
| title_sort | calculation of soil deformation caused by shield tunneling through the sludge layer with plastic drainage plates |
| url | http://dx.doi.org/10.1155/2020/6625132 |
| work_keys_str_mv | AT fanzhang calculationofsoildeformationcausedbyshieldtunnelingthroughthesludgelayerwithplasticdrainageplates AT linchonghuang calculationofsoildeformationcausedbyshieldtunnelingthroughthesludgelayerwithplasticdrainageplates AT yuliang calculationofsoildeformationcausedbyshieldtunnelingthroughthesludgelayerwithplasticdrainageplates |