上下错位地铁隧道异型联络通道冻结法施工及实测研究

袁华崧; 张婷; 杨平

doi:10.20265/j.cnki.issn.1007-2993.2023-0887

上下错位地铁隧道异型联络通道冻结法施工及实测研究

doi: 10.20265/j.cnki.issn.1007-2993.2023-0887

南京林业大学土木工程学院，江苏南京　210037

基金项目: 国家自然科学基金（52178337）

详细信息

作者简介:
袁华崧，男，1999年生，在读硕士研究生，主要从事城市地下工程的研究。E-mail：yhsqaq@njfu.edu.cn

通讯作者:
张　婷，女，1976年生，博士，副教授，主要从事城市地下工程的研究。E-mail：zhangting1028@sina.com

中图分类号: U455
计量
- 文章访问数: 6
- HTML全文浏览量: 5
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2023-11-28
- 修回日期: 2024-03-16
- 录用日期: 2024-05-09
- 刊出日期: 2025-02-21

Construction and field study of the freezing method for vertically misaligned irregular connection passage in subway tunnels

School of Civil Engineering, Nanjing Forestry University, Nanjing 210037, Jiangsu, China

摘要

摘要: 为解决间距大，上下错位地铁隧道异形联络通道的施工问题，采用在联络通道中部设置竖井、上下双通道分别冻结与构筑的方案，对冻结过程进行了温度与地表位移变化规律实测研究。结果表明：（1）冻结期间测温孔的温度变化可分为3个阶段，包括积极冻结前期测点温度迅速下降、积极冻结后期测点温度稳定下降、维护冻结阶段前期温度稳定后期开挖温度持续升高；（2）冻结壁往内侧扩展速率是向外侧扩展速率的1.1倍左右；（3）联络通道的地表位移在积极冻结期间迅速隆起，在维护冻结期间冻结产生的隆起和开挖引起的沉降相互抵消，大致呈现稳定趋势；（4）在不同埋深条件下，竖向和水平向地表冻胀隆起速率都是由联络通道轴线中心处向两侧逐渐减小，同时埋深越深地表的冻结隆起速率差异越小；（5）大间距、上下错位地铁隧道异形联络通道采用在联络通道中部设置竖井、两个错位通道分别冻结构筑方案合理可行，可为类似工程参考。
- 上下错位异形联络通道 /
- 冻结法 /
- 冻结温度场 /
- 地表竖向位移
Abstract: To solve the construction issues of irregular connection passages in subway tunnels with significant gaps and vertical misalignments, a structural scheme involving the incorporation of vertical shafts at the midpoint of the connection passage was proposed, alongside a dual-channel method where both the upper and lower passages were separately frozen and constructed. An empirical study scrutinizing the patterns of temperature variations and ground surface displacements during the freezing process was conducted, revealing the following results: (1) The fluctuations in temperature recorded at the monitoring holes during the freezing phase can be delineated into three distinct stages: a rapid decline in temperature during the early active freezing stage, followed by a stable decrease in temperature in the latter part of the active freezing stage, temperature stability in the early stage of the segment and finally a sustained increase in temperature during the later part of the maintenance freezing stage, exacerbated by ongoing excavation activities; (2) The speed of inward expansion of the freezing wall was found to be approximately 1.1 times higher than the outward expansion rate, illustrating a predominant inward growth during the freezing operations; (3) The ground deformation within the connection passage exhibited a rapid uplift during the active freezing phase. This was counterbalanced during the maintenance freezing phase, where the uplift induced by freezing was largely offset by the settlement caused by excavation, thus resulting in a generally stable trend; (4) At various burial depths, both vertical and horizontal ground freezing expansion uplift rates demonstrated a gradual decrease from the central axis of the connection passage moving towards either side. Furthermore, it was observed that greater burial depths resulted in a reduced discrepancy in ground freezing uplift rates; (5) The structural approach of installing vertical shafts at the midpoint of the irregular connection passage, complemented by individual freezing plans for the two vertically misaligned passages in the wide-spacing subway tunnel, proved to be a rational and viable solution for similar engineering projects.
- vertically misaligned irregular connection tunnel /
- freezing technique /
- frozen temperature field /
- vertical surface displacement

HTML全文

图 1 联络通道结构示意图

下载: 全尺寸图片幻灯片

图 2 冻结孔及测温孔布置图

下载: 全尺寸图片幻灯片

图 3 联络通道开挖顺序图

下载: 全尺寸图片幻灯片

图 4 地表位移监测点布置

下载: 全尺寸图片幻灯片

图 5 盐水总去、总回温度随冻结时间变化图

下载: 全尺寸图片幻灯片

图 6 墙体部分的内外侧测点温度与冻结时间变化曲线

下载: 全尺寸图片幻灯片

图 7 最大地表竖向位移随冻结时间变化

下载: 全尺寸图片幻灯片

图 8 联络通道冻结期间最大冻胀分布

下载: 全尺寸图片幻灯片

图 9 测点在各阶段地表竖向位移变化图

下载: 全尺寸图片幻灯片

表 1 地层参数表

名称	重度 γ/（kN·m⁻³）	黏聚力 c/kPa	内摩擦角 φ/（°）	土层厚度 /m
④-2a黏质粉土夹粉质黏土	19	9	25	3～3.9
④-2砂质粉土	18.7	28	16.5	2～3.4
⑤-1粉质黏土	19.4	40	16	6.5～7.2

下载: 导出CSV

表 2 联络通道冻结主要设计参数表

序号	参数名称	单位	参数值
1	冻结壁设计厚度	m	1.8
2	冻结壁平均温度	℃	≤−10
3	积极冻结时间	天	45
4	设计最低盐水温度	℃	−28～−30
5	维护冻结盐水温度	℃	≤−28
6	测温孔个数	个	16
7	卸压孔个数	个	8
8	冻结孔	个	76

下载: 导出CSV

参考文献(15)

[1]	董新平, 于少辉, 张毅豪, 等. 地铁联络通道冻结法施工中涌水成因及防治[J]. 地下空间与工程学报,2022,18(1):322-329,340. (DONG X P, YU S H, ZHANG Y H, et al. The causes and prevention measures of water inflow at cross passage located in sandy gravel layers and constructed by artificial ground freezing[J]. Chinese Journal of Underground Space and Engineering,2022,18(1):322-329,340. (in Chinese) DONG X P, YU S H, ZHANG Y H, et al. The causes and prevention measures of water inflow at cross passage located in sandy gravel layers and constructed by artificial ground freezing[J]. Chinese Journal of Underground Space and Engineering, 2022, 18（1）: 322-329,340. (in Chinese)
[2]	韩晓明, 何源, 张飞雷. 富水粉细砂层大直径盾构隧道联络通道施工关键技术研究——以孟加拉卡纳普里河底隧道为例[J]. 现代隧道技术,2023,60(3):227-235. (HAN X M, HE Y, ZHANG F L. Study on key construction technology for cross passages in large-diameter shield tunnels in water-bearing silty fine sand stratum: A case study of the Karnaphuli River Tunnel Project in Bangladesh[J]. Modern Tunnelling Technology,2023,60(3):227-235. (in Chinese) HAN X M, HE Y, ZHANG F L. Study on key construction technology for cross passages in large-diameter shield tunnels in water-bearing silty fine sand stratum: A case study of the Karnaphuli River Tunnel Project in Bangladesh[J]. Modern Tunnelling Technology, 2023, 60（3）: 227-235. (in Chinese)
[3]	赵江涛, 王笑欢, 程敏, 等. 冻结法施工联络通道渗漏水病害的原因及治理方法[J]. 城市轨道交通研究,2023,26(8):77-81,88. (ZHAO J T, WANG X H, CHENG M, et al. Causes and treatment measures of water seepage and leakage diseases in freezing construction link passage[J]. Urban Mass Transit,2023,26(8):77-81,88. (in Chinese) ZHAO J T, WANG X H, CHENG M, et al. Causes and treatment measures of water seepage and leakage diseases in freezing construction link passage[J]. Urban Mass Transit, 2023, 26（8）: 77-81,88. (in Chinese)
[4]	杨平, 陈瑾, 张尚贵, 等. 软弱地层联络通道冻结法施工温度及位移场全程实测研究[J]. 岩土工程学报,2017,39(12):2226-2234. (YANG P, CHEN J, ZHANG S G, et al. Whole range monitoring for temperature and displacement fields of cross passage in soft soils by AGF[J]. Chinese Journal of Geotechnical Engineering,2017,39(12):2226-2234. (in Chinese) YANG P, CHEN J, ZHANG S G, et al. Whole range monitoring for temperature and displacement fields of cross passage in soft soils by AGF[J]. Chinese Journal of Geotechnical Engineering, 2017, 39（12）: 2226-2234. (in Chinese)
[5]	林小淇, 胡俊, 任军昊, 等. 呼和浩特市地铁联络通道冻结施工监测与分析[J]. 海南大学学报(自然科学版),2022,40(4):426-433. (LIN X Q, HU J, REN J H, et al. Monitoring and analysis of freezing construction for contact passage of Hohhot Metro[J]. Natural Science Journal of Hainan University,2022,40(4):426-433. (in Chinese) LIN X Q, HU J, REN J H, et al. Monitoring and analysis of freezing construction for contact passage of Hohhot Metro[J]. Natural Science Journal of Hainan University, 2022, 40（4）: 426-433. (in Chinese)
[6]	FU Y, HU J, WU Y W. Finite element study on temperature field of subway connection aisle construction via artificial ground freezing method[J]. Cold Regions Science and Technology,2021,189:103327. doi: 10.1016/j.coldregions.2021.103327
[7]	李珂, 胡俊, 林小淇, 等. 砂卵石地层联络通道温度场发展规律及敏感性分析[J]. 森林工程,2023,39(1):174-186. (LI K, HU J, LIN X Q, et al. Development law and sensitivity analysis of temperature field of contact channel in sand and pebble strata[J]. Forest Engineering,2023,39(1):174-186. (in Chinese) LI K, HU J, LIN X Q, et al. Development law and sensitivity analysis of temperature field of contact channel in sand and pebble strata[J]. Forest Engineering, 2023, 39（1）: 174-186. (in Chinese)
[8]	张世雷, 汪磊, 何越磊, 等. 复合地层联络通道冻结温度场发展规律研究[J]. 地下空间与工程学报,2022,18(S1):266-273. (ZHANG S L, WANG L, HE Y L, et al. The development regularities research of freezing temperature field for the cross passage in compound stratum[J]. Chinese Journal of Underground Space and Engineering,2022,18(S1):266-273. (in Chinese) ZHANG S L, WANG L, HE Y L, et al. The development regularities research of freezing temperature field for the cross passage in compound stratum[J]. Chinese Journal of Underground Space and Engineering, 2022, 18（S1）: 266-273. (in Chinese)
[9]	陶东军, 桂林, 李建望. 地铁隧道联络通道冻结施工引起地表变形实测分析[J]. 城市轨道交通研究,2022,25(5):69-73. (TAO D J, GUI L, LI J W. Measurement analysis of surface deformation caused by freezing construction of connection passages in metro tunnels[J]. Urban Mass Transit,2022,25(5):69-73. (in Chinese) TAO D J, GUI L, LI J W. Measurement analysis of surface deformation caused by freezing construction of connection passages in metro tunnels[J]. Urban Mass Transit, 2022, 25（5）: 69-73. (in Chinese)
[10]	ZHANG M H, WAN H, YANG Y J, et al. Construction technology of the freezing method for the connecting-passage in the subway[J]. IOP Conference Series: Earth and Environmental Science,2019,384(1):012090. doi: 10.1088/1755-1315/384/1/012090
[11]	光辉, 高燕, 胡俊. 软土地区某隧道联络通道施工地表沉降监测分析[J]. 公路工程,2017,42(3):95-97,179. (GUANG H, GAO Y, HU J. Monitoring and analysis of surface settlement of tunnel construction in soft soil area[J]. Highway Engineering,2017,42(3):95-97,179. (in Chinese) GUANG H, GAO Y, HU J. Monitoring and analysis of surface settlement of tunnel construction in soft soil area[J]. Highway Engineering, 2017, 42（3）: 95-97,179. (in Chinese)
[12]	何玉华, 刘强, 陈昌六, 等. 联络通道冻结法施工周边环境监测实例分析研究[J]. 建筑技术开发,2022,49(14):80-82. (HE Y H, LIU Q, CHEN C L, et al. Analysis and research on surrounding environment monitoring of freezing method of connecting channel construction[J]. Building Technique Development,2022,49(14):80-82. (in Chinese) doi: 10.3969/j.issn.1001-523X.2022.14.027 HE Y H, LIU Q, CHEN C L, et al. Analysis and research on surrounding environment monitoring of freezing method of connecting channel construction[J]. Building Technique Development, 2022, 49（14）: 80-82. (in Chinese) doi: 10.3969/j.issn.1001-523X.2022.14.027
[13]	朱泽萱, 吴永哲, 杨平, 等. 60 m级超长联络通道冻结法施工融沉控制研究[J]. 三峡大学学报(自然科学版),2023,45(1):61-66. (ZHU Z X, WU Y Z, YANG P, et al. Research on melting settlement construction control by artificial ground freezing method of a 60m level super-long cross passage[J]. Journal of China Three Gorges University (Natural Sciences),2023,45(1):61-66. (in Chinese) ZHU Z X, WU Y Z, YANG P, et al. Research on melting settlement construction control by artificial ground freezing method of a 60m level super-long cross passage[J]. Journal of China Three Gorges University (Natural Sciences), 2023, 45（1）: 61-66. (in Chinese)
[14]	王祥, 陈发达, 徐文胜, 等. 某地铁工程长距离联络通道水平冻结法加固设计与有限元分析[J]. 城市轨道交通研究,2022,25(10):82-86. (WANG X, CHEN F D, XU W S, et al. Reinforcement design of horizontal freezing method applied to a long-distance link pas-sage of metro project, and finite element analysis[J]. Urban Mass Transit,2022,25(10):82-86. (in Chinese) WANG X, CHEN F D, XU W S, et al. Reinforcement design of horizontal freezing method applied to a long-distance link pas-sage of metro project, and finite element analysis[J]. Urban Mass Transit, 2022, 25（10）: 82-86. (in Chinese)
[15]	马俊, 胡导云, 杨平. 平面斜交联络通道水平冻结及实测分析[J]. 隧道建设(中英文),2019,39(12):1965-1972. (MA J, HU D Y, YANG P. Horizontal freezing and measurement analysis of plane oblique connection gallery[J]. Tunnel Construction,2019,39(12):1965-1972. (in Chinese) MA J, HU D Y, YANG P. Horizontal freezing and measurement analysis of plane oblique connection gallery[J]. Tunnel Construction, 2019, 39（12）: 1965-1972. (in Chinese)