基于局部粗粒化离散元的冰水堆积体隧道围岩破坏特征与加固措施研究

doi:10.13722/j.cnki.jrme.2020.0709

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (150787 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Relying on the engineering background of Zangga tunnel in Lalin section of the Sichuan—Tibet railway，a coarse-grained simulation method considering the shape feature of blocks is built up by using digital image method and discrete element method based on the engineering geological characteristics of the glacial deposits. The failure characteristics and meso-mechanisms of the surrounding rock caused by tunnel excavation are discussed through numerical simulation，and the pre-reinforcement measures of the surrounding rock are proposed. The research shows that the surrounding rock of the glacial deposit tunnel performs a progressive failure model along the whole ring，presenting a dynamic cycle process from initial loosening zone formation，shear fracture surface development，loose zone expansion to shear fracture surface extension. The degradation of particle contact in the loosening zone proves the development of shear fractures in soils. In addition，the evolution of the structural characteristics of the force chain reveals that the structure of the force chain degenerates from a ring shape to a chain shape，which ultimately leads to the failure of the block stone skeleton and the loosening of the surrounding rock. Engineering application results show that，the proposed pre-reinforcement measures of curtain grouting + advanced piperoof + small ducts can significantly inhibit the development of the fractures in surrounding rock and effectively control the excavation stability in the glacial deposit tunnels. Both drilling core and tunnel deformation monitoring results meet engineering requirements.

Key words： tunnelling engineering glacial deposits tunnel local coarse-grained discrete element method simulation failure characteristics pre-reinforcement measures of surrounding rocks

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	XIE Yipeng1
	ZHANG Cong2
	YANG Junsheng1
	CHEN Bin3
	FU Jinyang1
	ZHU Zhiheng1

Cite this article:

XIE Yipeng1,ZHANG Cong2,YANG Junsheng1, et al. Study on failure characteristics and reinforcement measures of surrounding rock of glacial deposit tunnels based on coarse-grained DEM[J]. , 2021, 40(3): 576-589.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0709 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/I3/576

[1] 钟祖良，涂义亮，何晓勇，等. 土石混合体物理指标及强度特性研究进展[J]. 地下空间与工程学报，2016，12(4)：1 135–1 144. (ZHONG Zuliang，TU Yiliang，HE Xiaoyong，et al. Research progress on physical index and strength characteristics of bimsoils[J]. Chinese Journal of Underground Space and Engineering，2016，12(4)：1 135–   1 144.(in Chinese))
[2] 廖秋林，李晓，董艳辉，等. 川藏公路林芝—八宿段地质灾害特征及形成机制初探[J]. 地质力学学报，2004，10(1)：33–39.(LIAO Qiulin，LI Xiao，DONG Yanhui，et al. Characteristics and formation mechanism of geological hazards along the section from Nyingchi to Baxoi of the Sichuan—Tibet highway[J]. Journal of Geomechanics，2004，10(1)：33–39.(in Chinese))
[3] SPRINGMAN S M，JOMMI C，TEYSSEIRE P. Instabilities on moraine slopes induced by loss of suction：a case history[J]. Géotechnique，2003，53(1)：3–10.
[4] 张永双，曲永新，王献礼，等. 中国西南山区第四纪冰川堆积物工程地质分类探讨[J]. 工程地质学报，2009，17(5)：581–589. (ZHANG Yongshuang，QU Yongxin，WANG Xianli，et al. On the engineering geological classification of quaternary glacial deposits in southwestern mountain area of China[J]. Journal of Engineering Geology，2009，17(5)：581–589.(in Chinese))
[5] 袁广祥，尚彦军，林达明. 帕隆藏布流域堆积体边坡的工程地质特征及稳定性评价[J]. 工程地质学报，2009，17(2)：188–194.(YUAN Guangxiang，SHANG Yanjun，LIN Daming. Engineering geological properties and stability analysis of moraine debris slopes in Palong river drainage area a-long Sichuan—Tibet highway[J]. Journal of Engineering Geology，2009，17(2)：188–194.(in Chinese))
[6] MCCABE B A，ORR T L，REILLY C C，et al. Settlement trough parameters for tunnels in Irish glacial tills[J]. Tunnelling and Underground Space Technology，2012，27(1)：1–12.
[7] 郑宗溪，王岩，刘大刚，等. 拉林铁路隧道富水冰碛层力学特性研究[J]. 铁道建筑，2019，59(11)：63–66.(ZHENG Zongxi，WANG Yan，LIU Dagang，et al. Study on mechanical properties of water-rich moraine soil in Lasa—linzhi railway tunnel[J]. Railway Engineering，2019，59(11)：63–66.(in Chinese))
[8] 严健，何川，李栋林，等. 冰水堆积体隧道施工过程变形与受力分析[J]. 铁道标准设计，2017，61(1)：65–71.(YAN Jian，HE Chuan，LI Donglin，et al. Analysis of deformation and stress during outwash accumulation tunnel construction[J]. Railway Standard Design，2017，61(1)：65–71.(in Chinese))
[9] WITSCHI T，STEINER W，FERRARI A. Urban，geotechnical and construction challenges for the realization of the CEVA Tunnel de Champel in Geneva[C]// World Tunnel Congress (WTC)/39th General Assembly of the International Tunnelling and Underground Space Association (ITA). [S. l. ]：[s. n. ]，2013：861–868.
[10] 孙其诚，辛海丽，刘建国，等. 颗粒体系中的骨架及力链网络[J]. 岩土力学，2009，30(增1)：83–87.(SUN Qicheng，XIN Haili，LIU Jianguo，et al. Skeleton and force chain network in static granular material[J]. Rock and Soil Mechanics，2009，30(Supp.1)：83–87.(in Chinese))
[11] 徐晗，程展林，泰培，等. 粗粒土的离心模型试验与数值模拟[J]. 岩土力学，2015，36(5)：1 322–1 327.(XU Han，CHENG Zhanlin，TAI Pei，et al. Centrifuge model test and numerical simulation of coarse-grained soil[J]. Rock and Soil Mechanics，2015，36(5)：1 322–    1 327.(in Chinese))
[12] MUNJIZA A，FENG Y T，HAN K，et al. On upscaling of discrete element models：similarity principles[J]. Engineering Computations，2009，26：509–609.
[13] ROESSLER T，KATTERFELD A. Scaling of the angle of repose test and its influence on the calibration of DEM parameters using upscaled particles[J]. Powder technology，2018，330：58–66.
[14] 中铁二院工程集团有限责任公司. 新建铁路川藏线拉萨至林芝段藏噶隧道设计图[R]. 成都：中铁二院工程集团有限责任公司，2015. (China Railway Eryuan Engineering Group Co.，Ltd.. Design of the Zangga Tunnel on the Lhasa to Nyingchi Section of the New Sichuan- Tibet Railway[R]. Chengdu：China Railway Eryuan Engineering Group Co.，Ltd.，2015.(in Chinese))
[15] 涂国祥. 西南河谷典型古冰水堆积体工程特性及稳定性研究[博士学位论文][D]. 成都：成都理工大学，2010.(TU Guoxiang. Study on the engineering properties and stability of typical ancient outwash congeries in southwestern valley，China[Ph. D. Thesis][D]. Chengdu：Chengdu University of Technology，2010.(in Chinese))
[16] 徐文杰，许强. 岩土材料细观结构定量化表述方法研究——以土石混合体为例[J]. 岩石力学与工程学报，2012，31(3)：499–506.(XU Wenjie，XU Qiang. Study of quantitative description methods of geomaterial meso-structure taking soil rock mixture for example[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(3)：499–506.(in Chinese))
[17] 杜修力，张佩，金浏. 土石混合体宏观力学性能研究的细观等效分析方法[J]. 工程力学，2017，34(10)：44–52.(DU Xiuli，ZHANG Pei，JIN Liu. A mesoscopic equivalent analysis method for the study on macromechanical properties of soil-rock mixture[J]. Engineering Mechanics，2017，34(10)：44–52.(in Chinese))
[18] MEDLEY E，LINDQUIST E S. The engineering significance of the scale-independence of some Franciscan Melanges in California，USA[C]// The 35th US Symposium on Rock Mechanics(USRMS). [S. l. ]：American Rock Mechanics Association，1995：907–914.
[19] 杜修力，张佩，金浏，等. 砂砾石地层隧道开挖模拟多尺度分析方法[J]. 中国科学：技术科学，2017，47(5)：547–558.(DU Xiuli，ZHANG Pei，JIN Liu，et al. Multi-scale modeling and simulation of tunnel excavation in sand-gravel strata[J]. Scientia Slnica Technologica，2017，47(5)：547–558.(in Chinese))
[20] 谢亦朋，杨秀竹，阳军生，等. 松散堆积体隧道围岩变形破坏细观特征研究[J]. 岩土力学，2019，40(12)：4 925–4 934.(XIE Yipeng，YANG Xiuzhu，YANG Junsheng，et al. Mesoscopic characteristics of deformation and failure on surrounding rocks of tunnel through loose deposits[J]. Rock and Soil Mechanics，2019，40(12)：4 925–4 934.(in Chinese))
[21] 马幸，周伟，马刚，等. 最小粒径截距对颗粒体数值模拟的影响[J]. 中南大学学报：自然科学版，2016，47(1)：166–175.(MA Xing，ZHOU Wei，MA Gang，et al. Effect of minimum particle size on assembly in numerical simulation[J]. Journal of Central South University：Science and Technology，2016，47(1)：166–175.(in Chinese))
[22] 张强，汪小刚，赵宇飞，等. 不同围压加载方式下土石混合体变形破坏机制颗粒流模拟研究[J]. 岩土工程学报，2018，40(11)：   2 051–2 060.(ZHANG Qiang，WANG Xiaogang，ZHAO Yufei，et al. Particle flow modelling of deformation and failure mechanism of soil-rock mixture under different loading modes of confining pressure[J]. Chinese Journal of Geotechnical Engineering，2018，40(11)：2 051–2 060.(in Chinese))
[23] WENSRICH C M，KATTERFELD A. Rolling friction as a technique for modelling particle shape in DEM[J]. Powder Technology，2012，217：409–417.
[24] 朱俊高，蒋明杰，陆阳洋，等. 应力状态对粗颗粒土静止侧压力系数影响试验研究[J]. 岩土力学，2019，40(3)：827–833.(ZHU Jungao，JIANG Mingjie，LU Yangyang，et al. Experimental study on influence of stress state on at-rest earth pressure coefficient for coarse grained soil[J]. Rock and Soil Mechanics，2019，40(3)：827–833.(in Chinese))
[25] 汪成兵. 软弱破碎隧道围岩渐进性破坏机理研究[博士学位论文][D]. 上海：同济大学，2007.(WANG Chengbing. Study on the progressive failure mechanism of the surrounding rock of tunnel constructed in soft rock[Ph. D. Thesis][D]. Shanghai：Tongji University，2007.(in Chinese))
[26] MINH N H，CHENG Y P. A DEM investigation of the effect of particle-size distribution on one-dimensional compression[J]. Géotechnique，2013，63(1)：44–53.
[27] RADJAI F，WOLF D E，JEAN M，et al. Bimodal character of stress transmission in granular packings[J]. Physical Review Letters，1998，80(1)：61–64.
[28] 朱胥仁，彭学军，阳军生，等. 藏噶隧道穿越冰水沉积层围岩加固与掘进技术[J]. 铁道建筑，2020，60(1)：54–57.(ZHU Xuren，PENG Xuejun，YANG Junsheng，et al. Reinforcement and driving technology for surrounding rock of Zangga tunnel in the Glaciofluvial deposit[J]. Railway Engineering，2020，60(1)：54–57.(in Chinese))