Investigating the Construction Procedure and Safety Oversight of the Mechanical Shaft Technique: Insights Gained from the Guangzhou Intercity Railway Project
Currently, subway and underground engineering projects are vital for alleviating urban congestion and enhancing citizens’ quality of life. Among these, excavation engineering for foundation pits involves the most accidents in geotechnical engineering. Although there are various construction methods,...
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MDPI AG
2025-01-01
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| author | Jianwang Li Wenrui Qi Xinlong Li Gaoyu Liu Jian Chen Huawei Tong |
| author_facet | Jianwang Li Wenrui Qi Xinlong Li Gaoyu Liu Jian Chen Huawei Tong |
| author_sort | Jianwang Li |
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| description | Currently, subway and underground engineering projects are vital for alleviating urban congestion and enhancing citizens’ quality of life. Among these, excavation engineering for foundation pits involves the most accidents in geotechnical engineering. Although there are various construction methods, most face issues such as a large footprint, high investments, resource waste, and low mechanization. Addressing these, this paper focuses on a subway foundation pit project in Guangzhou using mechanical shaft sinking technology. Using intelligent cloud monitoring, we analyzed the stress–strain patterns of the cutting edge and segments. The results showed significant improvements in construction efficiency, cost reduction, safety, and resource conservation. Based on this work, this paper makes the following conclusions: (1) The mechanical shaft sinking method offers advantages such as small footprint, high mechanization, minimal environmental impact, and cost-effectiveness. The achievements include a 22.22% reduction in construction time, a 20.27% decrease in investment, and lower worker risk. (2) Monitoring confirmed that all cutting edge and segment values remained safe, demonstrating the method’s feasibility and rationality. (3) Analyzing shaft monitoring data and field uncertainties, this study proposes recommendations for future work, including precise segment lowering control and introducing high-precision total stations and GPS technology to mitigate tunneling and assembly inaccuracies. The research validates the mechanical shaft sinking scheme’s scientific and logical nature, ensuring safety and contributing to technological advancements. It offers practical insights, implementable suggestions, and significant economic benefits, reducing project investment by RMB 41,235,600. This sets a benchmark for subway excavation projects in South China and beyond, providing reliable reference values. Furthermore, the findings provide valuable insights and guidance for industry peers, enhancing overall efficiency and sustainable development in subway construction. |
| format | Article |
| id | doaj-art-c3369b494c534d6f96263378f7a4db38 |
| institution | Kabale University |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-01-01 |
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| spelling | doaj-art-c3369b494c534d6f96263378f7a4db382025-01-10T13:16:08ZengMDPI AGBuildings2075-53092025-01-0115112910.3390/buildings15010129Investigating the Construction Procedure and Safety Oversight of the Mechanical Shaft Technique: Insights Gained from the Guangzhou Intercity Railway ProjectJianwang Li0Wenrui Qi1Xinlong Li2Gaoyu Liu3Jian Chen4Huawei Tong5China Railway 15th Bureau Group Co., Ltd., Guangzhou 510635, ChinaChina Railway 15th Bureau Group Co., Ltd., Guangzhou 510635, ChinaChina Railway 15th Bureau Group Co., Ltd., Guangzhou 510635, ChinaSchool of Civil Engineering and Transportation, Guangzhou University, Guangzhou 510006, ChinaCollege of Railway Engineering, Guangzhou Railway Polychnic, Guangzhou 510635, ChinaSchool of Civil Engineering and Transportation, Guangzhou University, Guangzhou 510006, ChinaCurrently, subway and underground engineering projects are vital for alleviating urban congestion and enhancing citizens’ quality of life. Among these, excavation engineering for foundation pits involves the most accidents in geotechnical engineering. Although there are various construction methods, most face issues such as a large footprint, high investments, resource waste, and low mechanization. Addressing these, this paper focuses on a subway foundation pit project in Guangzhou using mechanical shaft sinking technology. Using intelligent cloud monitoring, we analyzed the stress–strain patterns of the cutting edge and segments. The results showed significant improvements in construction efficiency, cost reduction, safety, and resource conservation. Based on this work, this paper makes the following conclusions: (1) The mechanical shaft sinking method offers advantages such as small footprint, high mechanization, minimal environmental impact, and cost-effectiveness. The achievements include a 22.22% reduction in construction time, a 20.27% decrease in investment, and lower worker risk. (2) Monitoring confirmed that all cutting edge and segment values remained safe, demonstrating the method’s feasibility and rationality. (3) Analyzing shaft monitoring data and field uncertainties, this study proposes recommendations for future work, including precise segment lowering control and introducing high-precision total stations and GPS technology to mitigate tunneling and assembly inaccuracies. The research validates the mechanical shaft sinking scheme’s scientific and logical nature, ensuring safety and contributing to technological advancements. It offers practical insights, implementable suggestions, and significant economic benefits, reducing project investment by RMB 41,235,600. This sets a benchmark for subway excavation projects in South China and beyond, providing reliable reference values. Furthermore, the findings provide valuable insights and guidance for industry peers, enhancing overall efficiency and sustainable development in subway construction.https://www.mdpi.com/2075-5309/15/1/129cutting edgesegmentunderground engineering projectsmonitoring data |
| spellingShingle | Jianwang Li Wenrui Qi Xinlong Li Gaoyu Liu Jian Chen Huawei Tong Investigating the Construction Procedure and Safety Oversight of the Mechanical Shaft Technique: Insights Gained from the Guangzhou Intercity Railway Project Buildings cutting edge segment underground engineering projects monitoring data |
| title | Investigating the Construction Procedure and Safety Oversight of the Mechanical Shaft Technique: Insights Gained from the Guangzhou Intercity Railway Project |
| title_full | Investigating the Construction Procedure and Safety Oversight of the Mechanical Shaft Technique: Insights Gained from the Guangzhou Intercity Railway Project |
| title_fullStr | Investigating the Construction Procedure and Safety Oversight of the Mechanical Shaft Technique: Insights Gained from the Guangzhou Intercity Railway Project |
| title_full_unstemmed | Investigating the Construction Procedure and Safety Oversight of the Mechanical Shaft Technique: Insights Gained from the Guangzhou Intercity Railway Project |
| title_short | Investigating the Construction Procedure and Safety Oversight of the Mechanical Shaft Technique: Insights Gained from the Guangzhou Intercity Railway Project |
| title_sort | investigating the construction procedure and safety oversight of the mechanical shaft technique insights gained from the guangzhou intercity railway project |
| topic | cutting edge segment underground engineering projects monitoring data |
| url | https://www.mdpi.com/2075-5309/15/1/129 |
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