土压平衡盾构施工引起地面变形研究的评述
姚元1陈梦成2何彬彬2许开成2侯宇2冯玉林2
Review of Ground Deformation Caused by Earth Pressure Balanced Shield Construction
YAO Yuan1CHEN Mengcheng2HE Binbin2XU Kaichen2HOU Yu2FENG Yulin2
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作者信息:1.南昌轨道交通集团有限公司， 330038， 南昌
2.华东交通大学轨道交通基础设施性能监测与保障国家重点实验室， 330013， 南昌
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Affiliation:1.Nanchang Rail Transit Group Co., Ltd., 330038, Nanchang, China
2.East China Jiaotong University, State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, 330013, Nanchang, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.01.014
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中图分类号/CLCN:TU433
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栏目/Col:研究报告
摘要:
［目的］土压平衡盾构施工过程中会不可避免地产生土体扰动，引起地层变形，进而对周围建筑环境产生不利影响，开展土压平衡盾构施工引起地层变形的研究具有重要意义。［方法］通过整合各类相关文献，以施工各环节的联系为中心进行研究。阐明了土压平衡盾构施工工作机理，从隧道几何因素、土层地质条件和盾构掘进参数三方面研究地面变形诱因。论述了土压平衡盾构施工引起地面变形的预测方法，并分析了各方法的适用性与优缺点。以变形诱因和变形预测为基础，列举了土压平衡盾构施工致地面变形的控制措施。指出了土压平衡盾构施工研究中存在的不足，并对土压平衡盾构施工未来发展方向进行了展望。［结果及结论］土压平衡盾构施工引起地面变形的诱因为隧道几何因素、土层地质条件和盾构掘进参数。土压平衡盾构施工引起地面变形的预测方法有经验公式法、理论解析法、有限单元与有限差分的数值模拟法，模型试验法、人工智能法。基于对地面变形的监测，不断调整施工中的盾构参数，是目前控制土压平衡盾构地面变形的有效方法。
Abstracts:
［Objective］ During the process of EPB SC (earth pressure balanced shield construction), inevitable soil disturbances occur, causing ground deformation and subsequently impacting the surrounding built environment negatively. Therefore, conducting research on the ground deformation caused by EPB SC holds significant importance. ［Method］ By integrating various relevant literatures, the research is centered around the connections between each stage of the construction. The working mechanism of EPC SC is clarified, the causes of ground deformation are studied from three aspects: tunnel geometry factors, soil geological conditions, and shield tunneling parameters. The prediction methods for ground deformation caused by EPC SC are discussed, the applicability and pros and cons of each method are analyzed. Based on the causes of deformation and deformation prediction, control measures for ground deformation caused by EPB SC are listed. The shortcomings in the research of EPB SC are pointed out, and the future development direction of EPB SC is discussed. ［Result & Conclusion］ The causes of ground deformation induced by EPB SC are tunnel geometry factors, soil geological conditions, and shield tunneling parameters. The prediction methods for ground deformation caused by EPC SC include empirical formula method, theoretical analysis method, numerical simulation method of finite elements and finite difference, model test method, and artificial intelligence method. Based on the monitoring of ground deformation, continuously adjusting the shield parameters during construction is an effective method to control ground deformation by EPB shield.
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