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[1]田扬,魏力峰,符亚鹏,等.泥水盾构近接地下管线施工的管线沉降计算方法及管土位移规律研究*[J].中国安全生产科学技术,2023,19(12):31-38.[doi:10.11731/j.issn.1673-193x.2023.12.004]
　TIAN Yang,WEI Lifeng,FU Yapeng,et al.Research on calculation method of pipeline settlement and pipe-soil displacement law during slurry shield tunneling construction in proximity to underground pipelines[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2023,19(12):31-38.[doi:10.11731/j.issn.1673-193x.2023.12.004]
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泥水盾构近接地下管线施工的管线沉降计算方法及管土位移规律研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
19
期数:
2023年12期
页码:
31-38
栏目:
学术论著
出版日期:
2023-12-31

文章信息/Info

Title:
Research on calculation method of pipeline settlement and pipe-soil displacement law during slurry shield tunneling construction in proximity to underground pipelines
文章编号:
1673-193X(2023)-12-0031-08
作者:
田扬; 魏力峰; 符亚鹏; 方勇; 刘磊
（1.西南交通大学 交通隧道工程教育部重点实验室，四川 成都 610031；
2.中铁第一勘察设计院集团有限公司，陕西 西安 710043；
3.中铁十四局大盾构工程有限公司，江苏 南京 211800)
Author(s):
TIAN Yang;  WEI Lifeng;  FU Yapeng;  FANG Yong;  LIU Lei
(1.Key Laboratory of Transportation Tunnel Engineering,Ministry of Education,Southwest Jiaotong University,Chengdu Sichuan 610031,China;
2.China Railway First Survey and Design Institute Group Co.,Ltd.,Xi’an Shaanxi 710043,China;
3.China Railway 14th Bureau Group Da Shield Engineering Co.,Ltd.,Nanjing Jiangsu 211800,China)
关键词:
管土相互作用; 泥水平衡盾构; 沉降预测; 地层损失率
Keywords:
pipe-soil interaction;  slurry balance shield tunneling;  settlement prediction;  ground loss rate
分类号:
X947
DOI:
10.11731/j.issn.1673-193x.2023.12.004
文献标志码:
A
摘要:
为更准确地预测管道受盾构开挖引起的竖向位移，对基于傅里叶变换的管道位移传递矩阵法进行修正，考虑泥水压力和注浆压力2个关键参数对管道位移的影响，并提出1种基于沉降监测数据的地层损失率的反演计算方法。同时，利用数值仿真软件FLAC3D分析不同工况下的管土变形规律，并与修正后的传递矩阵法进行对比。研究结果表明：由地层损失率反演计算方法可以计算得到较为准确和合理的地层损失率，使用该地层损失率计算地表沉降时与数值软件结果吻合度较高。修正后的传递矩阵法保留原计算方式的便捷性，同时考虑泥水压力和注浆压力等实际因素，与现场实测值更加贴近，准确度更高。管道与地层的相互作用可以通过管土相对刚度进行宏观定性描述，该参数可以反映出不同材质、壁厚、直径等条件下管道受盾构开挖影响的敏感性。研究结果可为盾构下穿既有管线的管线沉降预测提供一定参考。
Abstract:
To predict the vertical displacement of pipelines induced by shield tunneling more accurately,the modification is carried by using the transfer matrix method of pipeline displacement based on Fourier transform.Considering the influence of two key parameters of slurry pressure and grouting pressure on pipeline displacement,an inversion calculation method of ground loss rate based on settlement monitoring data is proposed.At the same time,the numerical simulation software FLAC3D is used to analyze the pipe-soil deformation law under different working conditions,and the results are compared with the modified transfer matrix method.The results show that the accurate and reasonable ground loss rate can be calculated by the inversion calculation method of ground loss rate,and the ground settlement calculated by the ground loss rate is in good agreement with the results of numerical software.The modified transfer matrix method retains the convenience of the original calculation method,and considers the actual factors such as slurry pressure and grouting pressure,which is closer to the field measured value and has higher accuracy.The interaction between the pipeline and the stratum can be qualitatively described by the pipe-soil relative stiffness,and this parameter can reflect the sensitivity of the pipeline to the influence of shield excavation under different materials,wall thicknesses,diameters and other conditions.The research results can provide some reference for the prediction of pipeline settlement of existing pipelines undercrossing by shield tunneling.

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备注/Memo

备注/Memo:
收稿日期： 2023-06-09
* 基金项目： 国家自然科学基金项目（52078428）；四川省杰出青年基金项目（2020JDJQ0032）
作者简介： 田扬，硕士研究生，主要研究方向为盾构隧道对环境的影响及控制。
通信作者： 方勇，博士，教授，主要研究方向为盾构隧道对环境的影响及控制。
更新日期/Last Update: 2024-01-07