Abstract: A lateral loading model box was used to carry out model tests under two cases: the tunnel was located in loess(case 1)and penetrated by potential sliding surface in loess(case 2). The stress characteristics of tunnel lining in the process of slope deformation were studied, and the laws of slope deformation, pressure change of tunnel surrounding rock and lining moment change were analyzed. Results showed that the surrounding rock near the slope side of the tunnel lining was easy to form a void zone under the two cases. The maximum width of the void zone was about 1 cm in case 1 and close to 2 cm in case 2. The void zone in case 2 was much larger than that in case 1, with a relative increase of 100%; Compared with case 1, the peak value of lining bending moment in case 2 increased significantly, with a relative increase of 159.33%, and the maximum increase was located in the area near the side arch foot of the slope. The slide of the potential sliding surface in the slope significantly increased the possibility of tunnel lining damage.
李荣建, 李浩泽, 白维仕, 王磊, 张瑾. 潜在滑动面对隧道衬砌承载特性影响的模型试验研究[J]. 隧道与地下工程灾害防治, 2021, 3(4): 1-8.
LI Rongjian, LI Haoze, BAI Weishi, WANG Lei, ZHANG Jin. Model test study on influence of potential sliding surface on bearing characteristics of tunnel lining. Hazard Control in Tunnelling and Underground Engineering, 2021, 3(4): 1-8.
[1] 张治国,马兵兵,黄茂松,等. 山区滑坡诱发既有隧道受力变形影响分析[J]. 岩土力学, 2018,39(10): 3555-3564. ZHANG Zhiguo, MA Bingbing, HUANG Maosong, et al. Influence analyses on force and deformation of existing tunnels induced by landslide in mountain region[J]. Rock and Soil Mechanics, 2018, 39(10): 3555-3564. [2] 马惠民,吴红刚. 隧道-滑坡体系的研究进展和展望[J]. 地下空间与工程学报, 2016, 12(2): 522-530. MA Huimin, WU Honggang. Progress and expectation of research on tunnel-landslide system[J]. Chinese Journal of Underground Space and Engineering, 2016, 12(2): 522-530. [3] 赵金. 隧道-滑坡体系受力模式与变形机理研究[D]. 兰州:兰州交通大学, 2019. ZHAO Jin. Research on stress model and deformation mechanism of tunnel-landslide system[D]. Lanzhou: Lanzhou Jiaotong University, 2019. [4] MOLLON G, PHOON K K, DIAS D, et al. Validation of a new 2D failure mechanism for the stability analysis of a pressurized tunnel face in a spatially varying sand[J]. Journal of Engineering Mechanics, 2011, 137(1): 8-21. [5] KITAGAWA T, KUMETA T, ICHIZYO T, et al. Application of convergence confinement analysis to the study of preceding displacement of a squeezing rock tunnel[J]. Rock Mechanics and Rock Engineering, 1991, 24(1): 31-51. [6] 张鲁新, 周德培. 蠕动滑坡成因及隧道变形机理的分析[J]. 岩石力学与工程学报, 1999, 18(2): 217-221. [7] 赵金,吴红刚,刘德仁,等. 隧道-洞口滑坡体系受力特征及变形模式[J]. 中国地质灾害与防治学报, 2019,30(3): 24-30. ZHAO Jin, WU Honggang, LIU Deren, et al. Stress distribution and deformation model of the tunnel and landslide at the tunnel's entrance[J]. The Chinese Journal of Geological Hazard and Control, 2019, 30(3): 24-30. [8] 马惠民. 坡体病害与隧道变形问题[J]. 岩石力学与工程学报, 2003(增刊2): 2719-2724. MA Huimin. Discussion on problems of slope disaster and tunnel deformation[J]. Chinese Journal of Rock Mechanics and Engineering, 2003(Suppl.2): 2719-2724. [9] 马惠民. 坡体病害地段隧道变形类型和机理[J]. 甘肃科学学报, 2003(增刊1): 87-94. [10] 刘恒显, 梁庆国,丁冬冬. 黄土隧道仰拱结构受力特性试验研究[J]. 地下空间与工程学报, 2018,14(增刊1): 77-83. LIU Hengxian, LIANG Qingguo, DING Dongdong. Experimental study on invert arch structure mechanical behavior of loess tunnels[J]. Chinese Journal of Underground Space and Engineering, 2018, 14(Suppl.1): 77-83. [11] 牛文庆,郑静,吴红刚, 等. 管道受横向滑坡影响的模型试验研究[J]. 铁道建筑, 2015(6): 117-120. NIU Wenqing, ZHENG Jing, WU Honggang, et al. Experimental study on effect of orthogonal landslide on pipe by model simulation[J]. Railway Engineering, 2015(6): 117-120. [12] 巩悦,晏长根,于澎涛,等. 隧道正交穿过滑坡体的相互作用影响研究[J]. 公路, 2020,65(7): 315-319. GONG Yue, YAN Changgen, YU Pengtao, et al. Research on the interaction of tunnel orthogonally passing through landslide[J]. Highway, 2020, 65(7): 315-319. [13] 艾挥, 吴红刚, 陈小云. 降雨对无支挡结构下隧道-滑坡正交体系的作用机理研究[J]. 地震工程学报, 2017, 39(2): 213-220. AI Hui, WU Honggang, CHEN Xiaoyun. Research on the influence mechanism of rainfall for the tunnel-landslide orthogonal systerm without the supporting structure[J].China Earthquake Engineering Journal, 2017, 39(2): 213-220. [14] 刘恒显. 不同基底围岩条件下的隧道仰拱承载特性研究[D]. 兰州:兰州交通大学, 2019. LIU Hengxian. Study on bearing characteristics of tunnel inverted under different basement conditions[D]. Lan-zhou: Lanzhou Jiaotong University, 2019. [15] 邵江,朱宝龙,李涛. 不同滑带角度滑坡作用下隧道衬砌结构受力特征[J/OL]. 西南交通大学学报2020-06-03.[2021-08-23]. http://kns.cnki.net/kcms/detail/51.1277.u.20200603.0959.004.html. [16] BARLA G, DEBERNARDI D, PERINO A. Lessons learned from deep-seated landslides activated by tunnel excavation[J]. Geomechanics and Tunnelling, 2015, 8(5): 394-401. [17] CRUDEN D, LAN H X. Using the working classification of landslides to assess the danger from a natural slope[C] //Engineering Geology for Society and Territory:Volume 2. [S.l] : Springer International Publishing, 2015:3-12. [18] LUNARDI P, BARLA G. Full face excavation in difficult ground[J]. Geomechanics and Tunnelling, 2014, 7(5): 461-468. [19] 毛坚强, 周德培. 滑坡-隧道相互作用受力变形规律的研究[J]. 西南交通大学学报, 2002, 37(4): 371-376. MAO Jianqiang, ZHOU Depei. Deformation analysis for landslide-tunnel interaction[J]. Journal of Southwest Jiaotong University, 2002, 37(4): 371-376. [20] CHIU Y C, LEE C H, WANG T T. Lining crack evolution of an operational tunnel influenced by slope instability[J]. Tunnelling and Underground Space Technology, 2017, 65: 167-178. [21] 陈建勋,罗彦斌. 大跨度黄土公路隧道结构稳定性及控制技术研究[J]. 隧道与地下工程灾害防治, 2019,1(1): 93-101. CHEN Jianxun, LUO Yanbin. The stability of structure and its control technology for lager-span loess tunnel[J]. Hazard Control in Tunnelling and Underground Engineering, 2019, 1(1): 93-101. [22] 南京水利科学研究院.土工试验规程: SL237—1999 [S].北京:中国水利水电出版社,1999.
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