高寒地区楔形体滑坡启动机制离心模型试验研究

doi:10.13722/j.cnki.jrme.2022.0890

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摘要全球气候变暖背景下，青藏高原冰岩地质灾害逐渐增多。楔形体滑坡是一种典型的高寒地区岩质斜坡失稳形式。针对此类滑坡，基于自主设计的适配土工离心机的温控装置，开展不同冻融循环作用及水力条件下的离心模型试验，对其启动机制与变形破坏过程进行研究。结果表明：(1) 寒区楔形体滑坡的破坏过程可概化为4个阶段：裂隙产生阶段、蠕变变形阶段、裂隙加速扩展阶段和楔形体失稳阶段；(2) 冰雪融水是寒区楔形体滑坡启动的关键诱因之一，其对滑坡失稳的影响既具有长期性也具有突发性，对岩体结构的劣化作用影响了滑坡的长期稳定性，造成的孔隙水压力激增使滑坡突然失稳；(3) 冻融循环作用是寒区楔形体滑坡启动的重要外动力，其在冷冻过程中表现为冻胀作用对岩体结构的冻胀损伤，在融化过程中表现为融水导致岩体结构的劣化和孔隙水压力的升高。采用的冻融离心试验可较为真实地再现冰雪融水与冻融循环作用下的楔形体滑坡演化过程，初步揭示了高寒地区楔形体滑坡的启动机制，为进一步深入探究此类滑坡影响因素的作用规律奠定了基础。

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	张欣欣1
	范宣梅1
	王文松1
	郭劲松2
	杜三林2
	于宗洋1

关键词 ：边坡工程, 楔形体滑坡, 启动机制, 离心模型试验, 冻融循环

Abstract：Under the background of global warming，rock and glacier-related geohazards on the Qinghai-Tibet Plateau are increasing gradually. Wedge landslide is a typical instability form of rock slope in alpine regions. To study the initiation mechanism and failure processes of wedge landslide，the centrifugal model tests under various freeze-thaw cycles and hydraulic conditions were carried out with a self-designed temperature control device adapted to geotechnical centrifuge. The results show that：(1) the failure processes of wedge landslide in alpine regions can be summarized into four stages，including the crack generation stage，creep deformation stage，crack accelerated expansion stage and wedge instability stage. (2) Melt water is a critical catalyst for the initiation of wedge landslide in alpine regions and its impact on landslide instability is both long-term and sudden：on one hand，the deterioration of rock mass structure affects the long-term stability of the landslide；on the other hand，the sudden instability of the landslide is caused by the surge of pore water pressure on the structural plane. (3) The freeze-thaw cycle is a significant external driving force for the initiation of wedge landslide in alpine regions，which causes frost heaving damage to the rock mass structure in the freezing process and the deterioration of the rock mass structure and the surge of pore water pressure in the melting process. The freeze-thaw centrifuge test method can relatively truly reproduce the evolution process of wedge landslide under the action of melt water and freeze-thaw cycle. The initiation mechanism of wedge landslide in alpine regions are preliminarily revealed，which lays a foundation for further exploring the influence laws of relevant factors.

Key words： slope engineering wedge landslide initiation mechanism centrifugal model test freeze-thaw cycle

引用本文:

张欣欣1，范宣梅1，王文松1，郭劲松2，杜三林2，于宗洋1. 高寒地区楔形体滑坡启动机制离心模型试验研究[J]. 岩石力学与工程学报, 2023, 42(5): 1202-1213.
ZHANG Xinxin1，FAN Xuanmei1，WANG Wensong1，GUO Jinsong2，DU Sanlin2，YU Zongyang1. Initiation mechanism of wedge landslide in alpine regions by centrifugal model test. , 2023, 42(5): 1202-1213.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2022.0890 或 http://rockmech.whrsm.ac.cn/CN/Y2023/V42/I5/1202

[2]	FAN X，YUNUS A P，YANG Y，et al. Imminent threat of rock-ice avalanches in High Mountain Asia[J]. Science of The Total Environment，2022，836：155380.
[13]	ZHANG S，XU Q，PENG D，et al. Stability analysis of rock wedge slide subjected to groundwater dynamic evolution[J]. Engineering Geology，2020，270：105528.
[3]	崔鹏，陈容，向灵芝，等. 气候变暖背景下青藏高原山地灾害及其风险分析[J]. 气候变化研究进展，2014，10(2)：103-109.(CUI Peng，CHEN Rong，XIANG Lingzhi，et al. Mountain hazards and risk analysis of Qinghai-Tibet Plateau under climate warming[J]. Climate Change Research，2014，10(2)：103-109.(in Chinese))
[4]	MEENA S R，CHAUHAN A，BHUYAN K，et al. Chamoli disaster：pronounced changes in water quality and flood plains using Sentinel data[J]. Environmental Earth Sciences，2021，80(17)：601.
[6]	MEENA S R，BHUYAN K，CHAUHAN A，et al. Snow covered with dust after Chamoli rockslide：inference based on high-resolution satellite data[J]. Remote Sensing Letters，2021，12(7)：704-714.
[8]	黄润秋，裴向军，张伟锋，等. 再论大光包滑坡特征与形成机制[J]. 工程地质学报，2009，17(6)：725-736.(HUANG Runqiu，PEI Xiangjun，ZHANG Weifeng，et al. Future examination on characteristics and formation mechanism of Daguangbao landslide[J]. Journal of Engineering Geology，2009，17(6)：725-736.(in Chinese))
[1]	DOU X，FAN X，YUNUS A P，et al. Spatio-temporal evolution of glacial lakes in the Tibetan Plateau over the past 30 years[J]. Earth System Science Data，2021，https：//doi.org/10.5194/essd-2021-354.
[10]	唐晓松，郑颖人，唐辉明. 边坡变形破坏演化特征的数值分析[J]. 重庆大学学报，2013，36(10)：101-113.(TANG Xiaosong，ZHENG Yingren，TANG Huiming. Numerical analysis on the evolutionary features of deformation and failure modes of slopes[J]. Journal of Chongqing University，2013，36(10)：101-113.(in Chinese))
[11]	KUMSAR H，AYDAN O，ULUSAY R. Dynamic and static stability assessment of rock slopes against wedge failures[J]. Rock Mechanics and Rock Engineering，2000，33(1)：31-51.
[14]	任洋，李天斌，杨玲，等. 基于离心模型试验与数值计算的超高陡加筋土填方边坡稳定性分析[J]. 岩土工程学报，2022，44(5)：836-844.(REN Yang，LI Tianbin，YANG Ling，et al. Stability analysis of ultra-high-steep reinforced soil-filled slopes based on centrifugal model tests and numerical calculation[J]. Chinese Journal of Geotechnical Engineering，2022，44(5)：836-844.(in Chinese))
[16]	郑建国，曹杰，张继文，等. 基于离心模型试验的黄土高填方沉降影响因素分析[J]. 岩石力学与工程学报，2019，38(3)：560-571.(ZHENG Jianguo，CAO Jie，ZHANG Jiwen，et al. Analysis of influencing factors of high loess-filled foundations based on centrifugal model tests[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(3)：560-571.(in Chinese))
[18]	陈达，许强，郑光，等. 基于离心模型试验的复杂层状软岩楔形滑坡变形演化研究[J]. 岩土力学，2020，41(10)：3 374-3 384. (CHEN Da，XU Qiang，ZHENG Guang，et al. Study on deformation evolution of wedge landslide in complex layered soft rock based on centrifugal model test[J]. Rock and Soil Mechanics，2020，41(10)：3 374-3 384.(in Chinese))
[21]	ZHOU J，CUI P，HAO M. Comprehensive analyses of the initiation and entrainment processes of the 2000 Yigong catastrophic landslide in Tibet，China[J]. Landslides，2016，13(1)：39-54.
[23]	XU Q，SHANG YXU Q，SHANG Y，VAN ASCH T，et al. Observations from the large，rapid Yigong rockslide-debris avalanche，southeast Tibet[J]. Canadian Geotechnical Journal，2012，5(49)：589-606.
[25]	张晨，蔡正银，徐光明，等. 冻土离心模型试验相似准则分析[J]. 岩土力学，2018，39(4)：1 236-1 244.(ZHANG Chen，CAI Zhengyin，XU Guangming，et al. Dimensional analysis of centrifugal modeling of frozen soil[J]. Rock and Soil Mechanics，2018，39(4)：1 236-1 244.(in Chinese))
[27]	李杰林，周科平，张亚民，等. 冻融循环条件下风化花岗岩物理特性的实验研究[J]. 中南大学学报：自然科学版，2014，45(3)：798-802.(LI Jielin，ZHOU Keping，ZHANG Yamin，et al. Experiment study on physical characteristics in weathered granite under freezing-thawing cycles[J]. Journal of Central South University：Science and Technology，2014，45(3)：798-802.(in Chinese))
[30]	李同录，罗世毅，何剑，等. 节理岩体力学参数的选取与应用[J]. 岩石力学与工程学报，2004，23(13)：2 182-2 186.(LI Tonglu，LUO Shiyi，HE Jian，et al. Determination and application of mechanical parameters for jointed rock masses[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(13)：2 182-2 186.(in Chinese))
[33]	KRAUTBLATTER M，FUNK D，GÜNZEL F K. Why permafrost rocks become unstable：a rock-ice-mechanical model in time and space[J]. Earth Surface Processes and Landforms，2013，38(8)：876-887.
[9]	殷跃平，李滨，张田田，等. 印度查莫利“2•7”冰岩山崩堵江溃决洪水灾害链研究[J]. 中国地质灾害与防治学报，2021，32(3)：1-8.(YIN Yueping，LI Bin，ZHANG Tiantian，et al. The February 7 of 2021 glacier-rock avalanche and the outburst flooding disaster chain in Chamoli，India[J]. The Chinese Journal of Geological Hazard and Control，2021，32(3)：1-8.(in Chinese))
[19]	黄英豪，蔡正银，张晨，等. 渠道冻胀离心模型试验设备的研制[J]. 岩土工程学报，2015，37(4)：615-621.(HUANG Yinghao，CAI Zhengyin，ZHANG Chen，et al. Development of centrifugal model test facility for frost-heave of channels[J]. Chinese Journal of Geotechnical Engineering，2015，37(4)：615-621.(in Chinese))
[28]	戚利荣，王家鼎，张登飞，等. 冻融循环作用下花岗岩损伤的宏微观尺度研究[J]. 水文地质工程地质，2021，48(5)：65-73.(QI Lirong，WANG Jiading，ZHANG Dengfei，et al. A study of granite damage in the macro and microscopic scales under freezing-thawing cycles[J]. Hydrogeology and Engineering Geology，2021，48(5)：65-73.(in Chinese))
[7]	SHUGAR D H，JACQUEMART M，SHEAN D，et al. A massive rock and ice avalanche caused the 2021 disaster at Chamoli，Indian Himalaya[J]. Science，2021，373(6552)：300-306.
[17]	邢建营，邢义川，陈祖煜，等. 岩质边坡楔形体破坏的离心模型试验方法研究[J]. 水土保持通报，2005，25(3)：15-19.(XING Jianying，XING Yichuan，CHEN Zuyu，et al. Method research of centrifuge modeling of wedge failure in rocky slope[J]. Bulletin of Soil and Water Conservation，2005，25(3)：15-19.(in Chinese))
[26]	王年香，章为民. 土工离心模型试验技术与应用[M]. 北京：中国建筑工业出版社，2015：28-29.(WANG Nianxiang，ZHANG Weimin. Geotechnical centrifugal model test technology and application[M]. Beijing：China Architecture and Building Press，2015：28-29.(in Chinese))
[5]	殷跃平. 西藏波密易贡高速巨型滑坡特征及减灾研究[J]. 水文地质工程地质，2000，27(4)：8-11.(YIN Yueping. Study on the characteristics and disaster reduction of Yigong high-speed giant landslide in Bomi，Tibet[J]. Hydrogeology and Engineering Geology，2000，27(4)：8-11.(in Chinese))
[12]	何昊，周小平，程浩，等. 地震作用下楔形体滑坡的动力稳定性分析[J]. 中国科技论文，2017，12(1)：12-17.(HE Hao，ZHOU Xiaoping，CHENG Hao，et al. Stability analysis of wedge shaped landslide under seismic loading[J]. China Science Paper，2017，12(1)：12-17.(in Chinese))
[15]	汤明高，李松林，许强，等. 基于离心模型试验的库岸滑坡变形特征研究[J]. 岩土力学，2020，41(3)：755-764.(TANG Minggao，LI Songlin，XU Qiang，et al. Study of deformation characteristics of reservoir landslide based on centrifugal model test[J]. Rock and Soil Mechanics，2020，41(3)：755-764.(in Chinese))
[22]	袁浩，郭长宝，吴瑞安，等. 西藏易贡高位远程滑坡研究进展与展望[J/OL]. 地质通报，http：//kns.cnki.net/kcms/detail/11.4648.P.2021
[24]	许强，王士天，柴贺军，等. 西藏易贡特大山体崩塌滑坡事件[C]// 中国岩石力学与工程实例第一届学术会议论文集. [S. l.]：[s. n.]，2007：41-46.(XU Qiang，WANG Shitian，CHAI Hejun，et al. The rock avalanche-flow landslide event in Yigong of Tibet[C]// The First Academic Conference Proceedings of Chinese Rock Mechanics and Engineering Example. [S. l.]：[s. n.]，2007：41-46.(in Chinese))
[31]	高杨，殷跃平，李壮，等. 高位远程岩质滑坡动力解体效应研究[J]. 岩石力学与工程学报，2022，41(10)：1 958-1 970.(GAO Yang，YIN Yueping，LI Zhuang，et al. Study on the dynamic disintegration effect of high position and long runout rock landslide[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(10)：1 958-1 970.(in Chinese))
[20]	DELANEY K B，EVANS S G. The 2000 Yigong landslide (Tibetan Plateau)，rockslide-dammed lake and outburst flood：Review，remote sensing analysis，and process modelling[J]. Geomorphology，2015，246：377-393.
12	27.1821.004.html.(YUAN Hao，GUO Changbao，WU Ruian，et al. Research progress and prospects of the giant Yigong long run-out landslide，Tibetan Plateau，China[J/OL]. Geological Bulletin of China，http：//kns.cnki.net/kcms/detail/11.4648.P.20211227.1821.004.html.(in Chinese ))
[32]	FISCHER L，AMANN F，MOORE J R，et al. Assessment of periglacial slope stability for the 1988 Tschierva rock avalanche(Piz Morteratsch，Switzerland)[J]. Engineering Geology，2010，116(1/2)：32-43.
[29]	李云鹏，王芝银. 花岗岩低温强度参数与冰胀力的关系研究[J]. 岩石力学与工程学报，2010，29(增2)：4 113-4 118.(LI Yunpeng，WANG Zhiyin. Study of relationship between strength parameters and ice expansion force of granite under low temperature[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.2)：4 113-4 118.(in Chinese))