Step effects of hydraulic pressure of metro tunnels in loess under sudden high-pressure seepage

QIU Junling; QIN Yiwen; LAI Jinxing; WANG Qiang; TANG Kunjie

doi:10.11779/CJGE20220062

Volume 45 Issue 4

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Chinese Journal of Geotechnical Engineering > 2023 > 45(4): 758-767. > DOI: 10.11779/CJGE20220062

QIU Junling, QIN Yiwen, LAI Jinxing, WANG Qiang, TANG Kunjie. Step effects of hydraulic pressure of metro tunnels in loess under sudden high-pressure seepage[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(4): 758-767. DOI: 10.11779/CJGE20220062

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Step effects of hydraulic pressure of metro tunnels in loess under sudden high-pressure seepage

School of Highway, Chang'an University, Xi'an 710064, China

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Received Date: January 13, 2022
Available Online: April 16, 2023

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Abstract

The leakage of a high-pressure water source has sudden, rapid and energy-release effects. Its destructive behavior of surrounding rock of loess and deterioration of tunnel structures is more severe than static infiltration. To reveal the transmission characteristics and inducement of the step effects of surrounding rock of loess under high-pressure seepage as well as the influences on the tunnel structures, the temporal and spatial evolution of seepage behavior of surrounding rock of loess and the mechanical response of tunnels are studied through the similar model tests. The research shows that the seepage process has successively experienced local collapsible erosion of loess → generation of the hidden cavity → formation of the preferential channels → step fluctuation of water pressure of surrounding rock, and structural internal force→seepage stability. The release of the local collapsible potential and the development of the preferential seepage channels are the main reasons for the step fluctuation of the water pressure of surrounding rock and structural stress. Under different water source locations, the changes of internal force of linings below the arch springing line are significantly greater than those of the upper structures, and the arch bottom location is most affected by the force. The maximum step increase of its axial force is 324 kN under the upper water source, and that of its bending moment is 84 kN·m under the lower water source. The surrounding rock area at the lower side of the dominant preferential channel is most affected. The influence degree of the internal force of linings under different water source positions is shown as upper water source > lower water source > side water source.
- metro tunnel,
- loess stratum,
- high-pressure seepage,
- step effect,
- mechanical response

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[1]	钱鸿缙, 王继唐, 罗宇生, 等. 湿陷性黄土地基[M]. 北京: 中国建筑工业出版社, 1985. QIAN Hongjin, WANG Jitang, LUO Yusheng, et al. Collapsible Loess Foundation[M]. Beijing: China Architecture & Building Press, 1985. (in Chinese)
[2]	王树明, 梁庆国, 王二磊. 黄土地区地铁隧道不同湿陷变形方式模型试验系统的研制及应用研究[J]. 现代隧道技术, 2020, 57(2): 157-162. https://www.cnki.com.cn/Article/CJFDTOTAL-XDSD202002023.htm WANG Shuming, LIANG Qingguo, WANG Erlei. Development and application research of a model test of different collapsible deformation modes of a metro tunnel in the loess area[J]. Modern Tunnelling Technology, 2020, 57(2): 157-162. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XDSD202002023.htm
[3]	LIU Z, LIU F Y, MA F L, et al. Collapsibility, composition, and microstructure of loess in China[J]. Canadian Geotechnical Journal, 2016, 53(4): 673-686. doi: 10.1139/cgj-2015-0285
[4]	PENG J B, FAN Z J, WU D, et al. Heavy rainfall triggered loess-mudstone landslide and subsequent debris flow in Tianshui, China[J]. Engineering Geology, 2015, 186: 79-90. doi: 10.1016/j.enggeo.2014.08.015
[5]	和晓楠, 周晓敏, 郭小红, 等. 深埋隧道注浆加固围岩非达西渗流场及应力场解析[J]. 中国公路学报, 2020, 33(12): 200-211. doi: 10.3969/j.issn.1001-7372.2020.12.016 HE Xiaonan, ZHOU Xiaomin, GUO Xiaohong, et al. Analysis of non-Darcy seepage field and stress field of surrounding rock strengthened by grouting in deep buried tunnel[J]. China Journal of Highway and Transport, 2020, 33(12): 200-211. (in Chinese) doi: 10.3969/j.issn.1001-7372.2020.12.016
[6]	张治国, 汪嘉程, 赵其华, 等. 富水山岭地区邻近补水断层隧道结构上的水头分布解析求解[J]. 岩石力学与工程学报, 2020, 39(S2): 3378-3394. doi: 10.13722/j.cnki.jrme.2019.0920 ZHANG Zhiguo, WANG Jiacheng, ZHAO Qihua, et al. Analytical solution of head distribution on tunnel structure adjacent water-filled fault in water-enriched mountain region[J]. Chinese Journal of Rock Mechanics and Engineering, 2020, 39(S2): 3378-3394. (in Chinese) doi: 10.13722/j.cnki.jrme.2019.0920
[7]	张成平, 张顶立, 王梦恕, 等. 城市隧道施工诱发的地面塌陷灾变机制及其控制[J]. 岩土力学, 2010, 31(增刊1): 303-309. doi: 10.16285/j.rsm.2010.s1.041 ZHANG Chengping, ZHANG Dingli, WANG Mengshu, et al. Catastrophe mechanism and control technology of ground collapse induced by urban tunneling[J]. Rock and Soil Mechanics, 2010, 31(S1): 303-309. (in Chinese) doi: 10.16285/j.rsm.2010.s1.041
[8]	QIU J L, WANG X L, LAI J X, et al. Response characteristics and preventions for seismic subsidence of loess in Northwest China[J]. Natural Hazards, 2018, 92(3): 1909-1935. doi: 10.1007/s11069-018-3272-5
[9]	刘成禹, 陈博文, 罗洪林, 等. 满流条件下管道破损诱发渗流侵蚀的试验研究[J]. 岩土力学, 2020, 41(1): 1-10. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202001002.htm LIU Chengyu, CHEN Bowen, LUO Honglin, et al. Experimental study of seepage erosion induced by pipeline damage under full pipe flow condition[J]. Rock and Soil Mechanics, 2020, 41(1): 1-10. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX202001002.htm
[10]	王明年, 董宇苍, 于丽. 基于双线性强度准则的黄土隧道围岩弹塑性解析解[J]. 中国铁道科学, 2019, 40(6): 68-77. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGTK201906010.htm WANG Mingnian, DONG Yucang, YU Li. Elastoplastic analytical solution to surrounding rock of loess tunnel based on bilinear strength criterion[J]. China Railway Science, 2019, 40(6): 68-77. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGTK201906010.htm
[11]	李兴高, 王霆. 刚性管线纵向应变计算及安全评价[J]. 岩土力学, 2008, 29(12): 3299-3302, 3306. doi: 10.3969/j.issn.1000-7598.2008.12.022 LI Xinggao, WANG Ting. Longitudinal strain calculation and safety evaluation of rigid pipelines[J]. Rock and Soil Mechanics, 2008, 29(12): 3299-3302, 3306. (in Chinese) doi: 10.3969/j.issn.1000-7598.2008.12.022
[12]	侯艳娟, 张顶立, 李鹏飞. 北京地铁施工安全事故分析及防治对策[J]. 北京交通大学学报, 2009, 33(3): 52-59. https://www.cnki.com.cn/Article/CJFDTOTAL-BFJT200903010.htm HOU Yanjuan, ZHANG Dingli, LI Pengfei. Analysis and control measures of safety accidents in Beijing subway construction[J]. Journal of Beijing Jiaotong University, 2009, 33(3): 52-59. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-BFJT200903010.htm
[13]	党发宁, 高闯洲, 党维维, 等. 西安f7地裂缝发展变化的预测研究[J]. 自然灾害学报, 2012, 21(3): 170-176. https://www.cnki.com.cn/Article/CJFDTOTAL-ZRZH201203025.htm DANG Faning, GAO Chuangzhou, DANG Weiwei, et al. Predictive research on development and change of ground fissures f7 in Xi'an[J]. Journal of Natural Disasters, 2012, 21(3): 170-176. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZRZH201203025.htm
[14]	高虎艳, 黄强兵, 王德志, 等. 西安地铁三号线隧道斜交穿越地裂缝带的设防参数研究[J]. 现代隧道技术, 2012, 49(6): 128-132, 146. https://www.cnki.com.cn/Article/CJFDTOTAL-XDSD201206022.htm GAO Huyan, HUANG Qiangbing, WANG Dezhi, et al. A study of design parameters for the tunnels of the Xi'an metro line 3 passing obliquely through active ground fissure zones[J]. Modern Tunnelling Technology, 2012, 49(6): 128-132, 146. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-XDSD201206022.htm
[15]	任建喜, 张杨洋. 斜穿地裂缝黄土地铁隧道施工诱发的地表沉降及隧道变形规律研究[J]. 铁道标准设计, 2015, 59(9): 112-117. https://www.cnki.com.cn/Article/CJFDTOTAL-TDBS201509026.htm REN Jianxi, ZHANG Yangyang. Study on settlement laws of ground surface and tunnel deformation induced by construction of loess metro runnel crossing ground fissure[J]. Railway Standard Design, 2015, 59(9): 112-117. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-TDBS201509026.htm
[16]	王念秦, 庞琦, 韩波, 等. 原状非饱和离石黄土向上渗流规律试验研究[J]. 水文地质工程地质, 2015, 42(1): 112-117. https://www.cnki.com.cn/Article/CJFDTOTAL-SWDG201501020.htm WANG Nianqin, PANG Qi, HAN Bo, et al. Experimental study of the upward seepage law of the intact unsaturated Lishi loess[J]. Hydrogeology & Engineering Geology, 2015, 42(1): 112-117. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-SWDG201501020.htm
[17]	邵生俊, 李骏, 李国良, 等. 大厚度湿陷性黄土隧道现场浸水试验研究[J]. 岩土工程学报, 2018, 40(8): 1395-1404. doi: 10.11779/CJGE201808004 SHAO Shengjun, LI Jun, LI Guoliang, et al. Field immersion tests on tunnel in large-thickness collapsible loess[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(8): 1395-1404. (in Chinese) doi: 10.11779/CJGE201808004
[18]	邵生俊, 陈菲, 邵帅. 黄土隧道地基湿陷变形评价方法探讨[J]. 岩石力学与工程学报, 2017, 36(5): 1289-1300. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201705024.htm SHAO Shengjun, CHEN Fei, SHAO Shuai. Collapse deformation evaluation method of loess tunnel foundation[J]. Chinese Journal of Rock Mechanics and Engineering, 2017, 36(5): 1289-1300. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201705024.htm
[19]	翁效林, 王俊, 王立新, 等. 黄土地层浸水湿陷对地铁隧道影响试验研究[J]. 岩土工程学报, 2016, 38(8): 1374-1380. doi: 10.11779/CJGE201608003 WENG Xiaolin, WANG Jun, WANG Lixin, et al. Experimental research on influence of loess collapsibility on subway tunnels[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(8): 1374-1380. (in Chinese) doi: 10.11779/CJGE201608003
[20]	张玉伟, 宋战平, 翁效林, 等. 大厚度黄土地层浸水湿陷对地铁隧道影响的模型试验研究[J]. 岩石力学与工程学报, 2019, 38(5): 1030-1040. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201905017.htm ZHANG Yuwei, SONG Zhanping, WENG Xiaolin, et al. Model test study on influence of the collapsibility of large thickness loess stratum on subway tunnels[J]. Chinese Journal of Rock Mechanics and Engineering, 2019, 38(5): 1030-1040. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201905017.htm
[21]	QIU J L, LU Y Q, LAI J X, et al. Failure behavior investigation of loess metro tunnel under local-high-pressure water environment[J]. Engineering Failure Analysis, 2020, 115: 104631.
[22]	QIU J L, LU Y Q, LAI J X, et al. Experimental study on the effect of water gushing on loess metro tunnel[J]. Environmental Earth Sciences, 2020, 79(11): 1-19.