超大直径盾构隧道下穿铁路路基变形影响分析

作者：吕计瑞¹,何剑光¹,邹小春¹,崔明²

作者简介：

吕计瑞，高级工程师，E-mail:547271972@ qq. com

作者单位：

1.中交隧道工程局有限公司，北京 100024; 2.中交一公局集团有限公司，北京 100024

基金项目：

∗国家重点研发计划（2017YFC0805305）

摘要：

大直径盾构隧道下穿施工会引起隧道周围土层变形，使城市既有道路或铁路发生沉降。依托北京市东六环改造工程，针对盾构隧道下穿既有铁路线的特级风险源，采用现场实测与有限元模拟相结合的方法，考虑同步注浆浆液硬化过程，探讨盾构隧道穿越施工对地表沉降及既有铁路路基变形的影响。研究结果表明，随着盾构隧道的掘进，既有铁路路基沉降现象逐渐显现，路基中心区域沉降最显著，两侧沉降相对较小。随着同步注浆强度的增加，地表整体沉降及最大沉降均呈明显下降趋势，盾构隧道穿越过程中保证合理的同步注浆强度，能够有效控制地表及铁路路基沉降。地表沉降实际监测数据与模拟预测结果较吻合，建立的模型准确可靠。

关键词：隧道；盾构；路基；变形；注浆；监测

English：

The undercrossing construction of large diameter shield tunnel will cause the deformation ofsoil around the tunnel,which will lead to the settlement of existing roads or railways in the city. Based onthe reconstruction project of the East Sixth Ring Road in Beijing, this paper adopts the method of fieldmeasurement and finite element simulation to discuss the influence of shield tunnel undercrossingconstruction on surface settlement and deformation of existing railway subgrade by considering thehardening process of synchronous grouting slurry, aiming at the special risk source of shield tunnelundercrossing existing railway line. The research results show that with the excavation of the shieldtunnel, the settlement of the existing railway subgrade gradually appears, the settlement of the centralarea of the subgrade is the most significant, and the settlement on both sides is relatively small. With theincrease of synchronous grouting strength, the overall settlement and maximum settlement of the surfaceshow a significant downward trend. In the process of shield tunnel undercrossing, reasonable synchronousgrouting strength can be ensured,which can effectively control the settlement of surface and railwaysubgrade. The actual monitoring data of surface settlement are in good agreement with the simulationprediction results, and the established model is accurate and reliable.

[1]	PECK R B. Deep excavations and tunnelling in soft ground[ C ] // Proceedings of 7th International Conference on SoilMechanics and Foundation Engineering, 1969.
[2]	MROUEH H,SHAHROUR I. A full 3-D finite element analysis oftunneling-adjacent structures interaction [ J ]. Computers andgeotechnics,2003,30（3）：245-253.
[3]	潘屹，马安震，孙海东，等。下穿黄河强透水砂卵石地层盾构隧道施工技术【J].施工技术（中英文），2025,54（3）：28-35.PAN Y,MA A Z, SUN H D, et al. Construction technology ofshield tunnel crossing the Yellow River under strong permeablesandy pebble strata[ J]. Construction technology,2025,54（ 3）：28-35.
[4]	韩煊，李宁，STANDING J R. Peck 公式在我国隧道施工地面变形预测中的适用性分析【 J].岩土力学，2007,28（ 1）：23-28,35.HAN X,LI N,STANDING J R. An adaptability study of Gaussianequation applied to predicting ground settlements induced bytunneling in China[ J]. Rock and soil mechanics,2007,28（ 1）：23-28,35.
[5]	JENCK O, DIAS D. 3D-finite difference analysis of theinteraction between concrete building and shallow tunnelling[J].Geotechnique, 2004, 54（8）： 519-528.
[6]	薛景沛，何浩。盾构两次近距离下穿既有运营地铁的施工技术【J].隧道建设，2009,29（S1）：46-51.XUE J P,HE H. Tunneling technology of crossing beneath theexisting metro lines by shield machine within short distance[ J].Tunnel construction,2009,29（S1）：46-51.
[7]	张海超。大直径盾构下穿运营地铁隧道施工变形控制技术[J].现代隧道技术，2022,59（S1）：934-940.ZHANG H C. Construction deformation control technology of largediameter shield undercrossing subway tunnel in operation [ J].Modern tunnelling technology,2022,59（S1）：934-940.
[8]	黄毅，何健，张家硕，等。曲线盾构隧道下穿施工影响分析[J].施工技术（中英文），2024,53（21）：71-77.HUANG Y, HE J, ZHANG J S, et al. Analysis of influence ofcurved shield tunnel undercrossing construction[ J]. Constructiontechnology,2024,53（21）：71-77.
[9]	张治国，张孟喜。软土城区土压平衡盾构上下交叠穿越地铁隧道的变形预测及施工控制【J].岩石力学与工程学报，2013（S2）：3428-3439.ZHANG Z G, ZHANG M X. Deformation prediction of subwaytunnel induced by EPB shield in soft clay during above and downoverlapped traversing process and its construction control [ J].Chinese journal of rock mechanics and engineering,2013（ S2）：3428-3439.
[10]	马忠政。复杂环境下软土地区地铁隧道近距离穿越施工技术[J].施工技术，2013,42（8）：60-64.MA Z Z. Construction for metro shield crossing adjacent tunnels incomplex environment[J]. Construction technology,2013,42（8）：60-64.
[11]	章邦超，刘洪亮，雷锋国，等。上软下硬地层大直径土压平衡盾构下穿民房建筑群沉降控制【 J].现代隧道技术，2022,59（2）：172-181.ZHANG B C,LIU H L,LEI F G,et al. On settlement control inlarge-diameter EPB shield tunnelling under civil housing complexin upper-soft and lower-hard strata [ J ]. Modern tunnellingtechnology,2022,59（2）：172-181.
[12]	王学斌。公路隧道施工对邻近建筑物的影响及控制【 J].公路交通科技，2022,39（8）：182-190.WANG X B. Influence and control of highway tunnel constructionon adjacent buildings[ J]. Journal of highway and transportationresearch and development,2022,39（8）：182-190.
[13]	李锁在，郭仁亮，孙博，等。盾构下穿胶济铁路路基沉降规律与变形控制【J].科技和产业，2022,22（8）：398-403.LI S Z,GUO R L,SUN B,et al. Settlement law and deformationcontrol of subgrade when shield underneath Jiaoji Railway[ J].Science technology and industry,2022,22（8）：398-403.
[14]	邓飞。盾构隧道下穿既有铁路路基的加固措施【 J].科技与创新，2022（16）：136-138,142.DENG F. Reinforcement measures of shield tunnel under existingrailway subgrade[J]. Science and technology& innovation,2022（16）：136-138,142.
[15]	罗雄文，张文广，梁荣柱。双孔隧道中后掘进盾构对地表沉降的影响【J].公路交通科技，2020,37（9）：82-89.LUO X W,ZHANG W G,LIANG R Z. Influence of subsequentshield tunneling on ground surface settlement during constructionof twin tunnel[J]. Journal of highway and transportation researchand development,2020,37（9）：82-89.
[16]	刘士海。新建隧道下穿不同结构形式既有运营隧道变形分析[J].施工技术（中英文），2024,53（10）：73-79.LIU S H. Deformation analysis of existing operating tunnel withdifferent structural forms crossed by new tunnel[ J]. Constructiontechnology,2024,53（10）：73-79.
[17]	余彪。公路隧道中关于盾构机掘进的研究【 J].公路交通科技（应用技术版），2020,16（7）：248-251.YU B. Study on shield tunneling in highway tunnel[J]. Journal ofhighway and transportation science and technology（ appliedtechnology edition），2020,16（7）：248-251.
[18]	李斯，孙高伟，张志超，等。盾构隧道下穿陇海铁路路基预加固及沉降控制【J].铁道建筑，2023,63（2）：129-133.LI S, SUN G W, ZHANG Z C, et al. Pre-reinforcement andsettlement control of Lanzhou-Lianyungang Railway subgrade withshield tunnel underpass[J]. Railway engineering,2023,63（2）：129-133.
[19]	王刚，张津钰，吕杨。双线盾构隧道下穿铁路路基施工过程数值模拟【J].施工技术（中英文），2024,53（3）：42-48.WANG G,ZHANG J Y,LÜ Y. Numerical simulation of double-track shield tunnel crossing railway subgrade construction [ J].Construction technology,2024,53（3）：42-48.

岩土与地下工程 > 2026年 第卷 第03期