Study on the strata displacement law of overlapping shield tunnels with different overlapping angles
Based on the overlapping tunnel of Tel Aviv Red Line Light Rail Project in Israel, this study established a three-dimensional numerical model by using Rhino6 and FLAC3D software on the basis of analysis of on-site monitoring data, to investigate the ground settlement and stratum displacement laws of...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Emergency Management Press
2023-08-01
|
| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/en/article/doi/10.19606/j.cnki.jmst.2023.04.008 |
| _version_ | 1797804340989132800 |
|---|---|
| author | Yang Zhiyong Niu Yuzhe Ding Yaowen Qi Weiqiang An Hongbin Jiang Yusheng |
| author_facet | Yang Zhiyong Niu Yuzhe Ding Yaowen Qi Weiqiang An Hongbin Jiang Yusheng |
| author_sort | Yang Zhiyong |
| collection | DOAJ |
| description | Based on the overlapping tunnel of Tel Aviv Red Line Light Rail Project in Israel, this study established a three-dimensional numerical model by using Rhino6 and FLAC3D software on the basis of analysis of on-site monitoring data, to investigate the ground settlement and stratum displacement laws of shield overlapping tunnel at different overlapping angles.Results show that when the two tunnels gradually transit from horizontal to overlapping state, with the increase of overlapping angle of the two tunnels, the accumulated settlement at the measuring points in the middle of the two tunnels increases, but the accumulated settlement is not only affected by overlapping angle, but also closely related to the stratum traversing situation.Under the stratum condition of the project, when the overlapping angle is 60°, the accumulated surface settlement reaches the maximum because both tunnels pass through the loose reservoir K1 stratum.When the overlapping angle of the rear-built tunnel is less than 45° after excavation, the width of the settlement trough increases.When the overlapping angle is larger than 45° and smaller than 60°, the width of the settlement trough remains unchanged.The width of settlement trough decreases when the overlapping angle is larger than 60°.When the overlapping angle reaches 90°, the settlement trough is symmetrical on both sides.After excavation of tunnels on both sides, when the overlapping angle of the tunnels reaches 75°, the strata on both sides change the direction of movement.This research offer reference for the design and construction of overlapping tunnels. |
| first_indexed | 2024-03-13T05:35:40Z |
| format | Article |
| id | doaj.art-9595ac4c6f4d442898ab40516fe01a09 |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-03-13T05:35:40Z |
| publishDate | 2023-08-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-9595ac4c6f4d442898ab40516fe01a092023-06-14T09:23:12ZengEmergency Management Press矿业科学学报2096-21932023-08-018451952810.19606/j.cnki.jmst.2023.04.008kykxxb-8-4-519Study on the strata displacement law of overlapping shield tunnels with different overlapping anglesYang Zhiyong0Niu Yuzhe1Ding Yaowen2Qi Weiqiang3An Hongbin4Jiang Yusheng5Schoot of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaSchoot of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaSchoot of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaSchoot of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaThe 2nd Engineering Co., Ltd.of China Railway 12th Bureau Group., Taiyuan Shanxi 030032, ChinaSchoot of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaBased on the overlapping tunnel of Tel Aviv Red Line Light Rail Project in Israel, this study established a three-dimensional numerical model by using Rhino6 and FLAC3D software on the basis of analysis of on-site monitoring data, to investigate the ground settlement and stratum displacement laws of shield overlapping tunnel at different overlapping angles.Results show that when the two tunnels gradually transit from horizontal to overlapping state, with the increase of overlapping angle of the two tunnels, the accumulated settlement at the measuring points in the middle of the two tunnels increases, but the accumulated settlement is not only affected by overlapping angle, but also closely related to the stratum traversing situation.Under the stratum condition of the project, when the overlapping angle is 60°, the accumulated surface settlement reaches the maximum because both tunnels pass through the loose reservoir K1 stratum.When the overlapping angle of the rear-built tunnel is less than 45° after excavation, the width of the settlement trough increases.When the overlapping angle is larger than 45° and smaller than 60°, the width of the settlement trough remains unchanged.The width of settlement trough decreases when the overlapping angle is larger than 60°.When the overlapping angle reaches 90°, the settlement trough is symmetrical on both sides.After excavation of tunnels on both sides, when the overlapping angle of the tunnels reaches 75°, the strata on both sides change the direction of movement.This research offer reference for the design and construction of overlapping tunnels.http://kykxxb.cumtb.edu.cn/en/article/doi/10.19606/j.cnki.jmst.2023.04.008overlapping tunnelsepb shieldoverlapping anglesnumerical simulationstratum displacement |
| spellingShingle | Yang Zhiyong Niu Yuzhe Ding Yaowen Qi Weiqiang An Hongbin Jiang Yusheng Study on the strata displacement law of overlapping shield tunnels with different overlapping angles 矿业科学学报 overlapping tunnels epb shield overlapping angles numerical simulation stratum displacement |
| title | Study on the strata displacement law of overlapping shield tunnels with different overlapping angles |
| title_full | Study on the strata displacement law of overlapping shield tunnels with different overlapping angles |
| title_fullStr | Study on the strata displacement law of overlapping shield tunnels with different overlapping angles |
| title_full_unstemmed | Study on the strata displacement law of overlapping shield tunnels with different overlapping angles |
| title_short | Study on the strata displacement law of overlapping shield tunnels with different overlapping angles |
| title_sort | study on the strata displacement law of overlapping shield tunnels with different overlapping angles |
| topic | overlapping tunnels epb shield overlapping angles numerical simulation stratum displacement |
| url | http://kykxxb.cumtb.edu.cn/en/article/doi/10.19606/j.cnki.jmst.2023.04.008 |
| work_keys_str_mv | AT yangzhiyong studyonthestratadisplacementlawofoverlappingshieldtunnelswithdifferentoverlappingangles AT niuyuzhe studyonthestratadisplacementlawofoverlappingshieldtunnelswithdifferentoverlappingangles AT dingyaowen studyonthestratadisplacementlawofoverlappingshieldtunnelswithdifferentoverlappingangles AT qiweiqiang studyonthestratadisplacementlawofoverlappingshieldtunnelswithdifferentoverlappingangles AT anhongbin studyonthestratadisplacementlawofoverlappingshieldtunnelswithdifferentoverlappingangles AT jiangyusheng studyonthestratadisplacementlawofoverlappingshieldtunnelswithdifferentoverlappingangles |