基于非均质流变特性的滑坡时效演化及预警研究

doi:10.13722/j.cnki.jrme.2021.1118

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摘要针对滑坡孕育演化过程中岩土体非均质现象，开展滑坡相似材料的强度试验、底摩擦模型试验和扫描电镜试验，从宏观和微观角度深入研究滑坡演化力学机制及其非均质特征。基于上述研究，将强度劣化模型与Burgers模型串联，形成考虑非均质流变特征的本构模型，应用于滑坡时效演化的数值算例分析和预警研究，结果表明：滑坡演化过程中存在时间和空间非均质性，在时间上，岩土体参数劣化速率越快的滑坡，其蠕滑变形到最终失稳破坏所经历的时间越短，在空间上，不同部位的滑坡岩土体的破坏机制和微观结构存在非均质性。考虑非均质流变特征的本构模型能够较好地反映滑坡变形三阶段演化特征，通过实际工程与数值分析相结合，验证了非均质流变模型的准确性，为滑坡失稳破坏的分析和预警提供有益参考。

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	陈国庆1
	唐辉明2
	胡凯云1
	李长冬2

关键词 ：边坡工程, 非均质流变, 流变模型, 加速变形阶段, 滑坡预警

Abstract：In view of the heterogeneous of rock and soil during the gestation and evolution of landslides，the strength test，bottom friction model test and scanning electron microscope test of similar materials of landslides were carried out，and the mechanical mechanism of landslide evolution and its heterogeneity characteristics were deeply studied from macro and micro perspectives. In addition，the strain softening model and Burgers model are connected in series to form a constitutive model considering the heterogeneous rheological characteristics，which is applied to the numerical example analysis and early warning study of landslide time evolution. The results show that there are time and spatial heterogeneity. In terms of time，the faster the degradation rate of rock and soil parameters of the landslide，the shorter the time from creep deformation to the final instability failure. There is heterogeneity in the mechanism and microstructure. The constitutive model considering the heterogeneous rheological characteristics can better reflect the three-stage evolution characteristics of landslide deformation. The accuracy of the heterogeneous rheological model is verified through the combination of actual engineering and numerical analysis，which is the analysis of landslide instability and failure，and early warning to provide useful reference.

Key words： slope engineering heterogeneous rheological characteristics creep model accelerating creep early warning of landslides

引用本文:

陈国庆1，唐辉明2，胡凯云1，李长冬2. 基于非均质流变特性的滑坡时效演化及预警研究[J]. 岩石力学与工程学报, 2022, 41(9): 1795-1809.
CHEN Guoqing1，TANG Huiming2，HU Kaiyun1，LI Changdong2. Evolution characteristics and early warning of landslides based on heterogeneous rheological properties. , 2022, 41(9): 1795-1809.

链接本文:

http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2021.1118 或 http://rockmech.whrsm.ac.cn/CN/Y2022/V41/I9/1795

[24]	MARTELS J. Mechanics of landslide initiation as a shear fracture phenomenon[J. ]Marine Geology，2004，203：319–339.
[5]	许强. 滑坡的变形破坏行为与内在机制[J]. 工程地质学报，2012，20(2)：145–151.(XU Qiang. Theoretical studies on prediction of landslides using slope deformation process data[J]. Journal of Engineering Geology，2012，20(2)：145–151.(in Chinese))
[3]	PYTHAROULI S I，STIROS S C. Kinematics and rheology of a major landslide based on signal analysis[J]. Geotechnique，2010，60(3)：207–222.
[7]	许强，曾裕平. 具有蠕变特点滑坡的加速度变化特征及临滑预警指标研究[J]. 岩石力学与工程学报，2009，28(6)：1 099–1 106.(XU Qiang，ZENG Yuping. Research on acceleration variation characteristics of creep landslide and early-warning prediction indicator of critical sliding[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(6)：1 099–1 106.(in Chinese))
[9]	孙淼军，唐辉明，王潇弘，等. 蠕动型滑坡滑带土蠕变特性研究[J]. 岩土力学，2017，38(2)：385–391.(SUN Miaojun，TANG Huiming，WANG Xiaohong，et al. Creep properties of sliding-zone soil from a creeping landslide[J]. Rock and Soil Mechanics，2017，38(2)：385–391.(in Chinese))
[12]	JIANG X Z，WEN B P. Creep behavior of slip zone of reactivated slow-moving landslide and its characteristic strength[J]. Rock and Soil Mechanics，2015，36(2)：495–501.
[13]	蒋秀姿，文宝萍. 缓慢复活型滑坡滑带土的蠕变性质与特征强度试验研究[J]. 岩土力学，2015，36(2)：495–501，549.(JIANG Xiuzi，WEN Baoping. Creep behavior of slip zone of reactivated slow-moving landslide and its characteristic strength[J]. Rock and Soil Mechanics，2015，36(2)：495–501，549.(in Chinese))
[2]	WANG S，WANG J，WU W，et al. Creep properties of clastic soil in a reactivated slow-moving landslide in the Three Gorges Reser-voir Region，China[J]. Engineering Geology，2020，267：105493.
[10]	孙淼军. 库水作用下滑坡–抗滑桩体系变形时效规律与长期稳定性研究[博士学位论文][D]. 武汉：中国地质大学，2015.(SUN Miaojun. Time-dependent deformation and long-term stability of landslide and stabilizing piles system under water level fluctuation[Ph. D. Thesis][D]. Wuhan：China University of Geosciences，2015.(in Chinese))
[15]	周翠英，牟春梅. 软土破裂面的微观结构特征与强度的关系. 岩土工程学报，2005，27(10)：1 136–1 141.(ZHOU Cuiying，MU Chunmei. Relationship between microstructural characters of fracture surface and strength of soft clay[J]. Chinese Journal of Geotechnical Engineering，2005，27(10)：1 136–1 141.(in Chinese))
[17]	刘动，陈晓平. 滑带土环剪剪切面的微观观测与分析[J]. 岩土力学，2013，39(9)：1 827–1 834.(LIU Dong，CHEN Xiaoping，Microscopic observation and analysis of ring shear surface of slip zone soil[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(9)：1 827–1 834.(in Chinese))
[20]	丁秀丽，付敬，刘健，等. 软硬互层边坡岩体的蠕变特性研究及稳定性分析[J]. 岩石力学与工程学报，2005，24(19)：3 410–3 418. (DING Xiuli，FU Jing，LIU Jian，et al. Study on creep behavior of alternatively distributed soft and hard rock layers and slope stability analysis[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(19)：3 410–3 418.(in Chinese))
[23]	王鲁男，晏鄂川，宋琨，等. 滑带土残余强度的速率效应及其对滑坡变形行为的影响[J]. 中南大学学报：自然科学版，2017，48(12)：3 350–3 358.(WANG Lunan，YAN Echuan，SONG Kun，et al. Rate effect of residual strength of slip soils and its impact on deformation process of landslides[J]. Journal of Central South University：Science and Technology，2017，48(12)：3 350–3 358.(in Chinese))
[25]	宁奕冰，唐辉明，张勃成，等. 基于正交设计的岩石相似材料配比研究及底摩擦物理模型试验应用[J]. 岩土力学，2020，41(6)：2 009– 2 020.(NING Yibing，TANG Huiming，ZHANG Bocheng，et al. Research on rock similar material proportioning test based on orthogonal design and its application in base friction physical model test[J]. Rock and Soil Mechanics，2020，41(6)：2 009–2 020.(in Chinese))
[8]	唐辉明，鲁莎. 三峡库区黄土坡滑坡滑带空间分布特征研究[J]. 工程地质学报，2018，26(1)：129–136.(TANG Huiming，LU Sha. Research on the spatial distribution of slip zone of Huangtupo landslide in Three Gorges reservoir area[J]. Journal of Engineering Geology，26(1)：129–136.(in Chinese))
[18]	谭万鹏，郑颖人，王凯. 考虑蠕变特性的滑坡稳定状态分析研究[J]. 岩土工程学报，2010，32(增2)：5–8.(TAN Wanpeng，ZHENG Yingren，WANG Kai. Stable state of landslides considering creep properties[J]. Chinese Journal of Geotechnical Engineering，2010，32(Supp.2)：5–8.(in Chinese))
[27]	王伟，陈国庆，朱静，等. 考虑张拉–剪切渐进破坏的边坡强度折减法研究[J]. 岩石力学与工程学报，2018，37(9)：2 064–2 074. (WANG Wei，CHEN Guoqing，ZHU Jing，et al. Slope stability calculated with strength reduction method considering tensile and shear progressive failure[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(9)：2 064–2 074.(in Chinese))
[28]	孔位学，芮勇勤，董宝弟. 岩土材料在非关联流动法则下剪胀角选取探讨[J]. 岩土力学，2009，30(11)：66–70.(KONG Weixue，RUI Yongqin，DONG Baodi. Determination of dilatancy angle for geomaterials under non-associated flow rule[J]. Rock and Soil Mechanics，2009，30(11)：66–70.(in Chinese))
[1]	孙钧. 岩石流变力学及其工程应用研究的若干进展[J]. 岩石力学与工程学报，2007，26(6)：1 081–1 106.(SUN Jun. Rock rheological mechanics and its advance in engineering applications[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(6)：1 081–1 106.(in Chinese))
[4]	张晓奇，胡新丽，刘忠绪，等. 呷爬滑坡滑带土蠕变特性及其稳定性[J]. 地质科技通报，2020，39(6)：145–153.(ZHANG Xiaoqi，HU Xinli，LIU Zhongxu，et al. Creep properties and stability of sliding zone soil in Gapa landslid[J]. Bulletin of Geological Science and Technology，2020，39(6)：145–153.(in Chinese))
[6]	许强，汤明高，徐开祥，等. 滑坡时空演化规律及预警预报研究[J]. 岩石力学与工程学报，2008，27(6)：1 104–1 112.(XU Qiang，TANG Minggao，XU Kaixiang，et al. Research on space-time evolution laws and early warning-prediction of landslides[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(6)：1 104–1 112.(in Chinese))
[11]	CHENG D X， LIU D A，DING E B，et al. Study on attenuation characteristics of long-term strength for landslide soil[J]. Journal of Rock Mechanics and Engineering，24(Supp.2)：5 827–5 834.
[14]	蒋秀姿，文宝萍，张咪咪，等. 不同状态下黏性土剪切蠕变行为对比分析[J]. 工程地质学报，2018，26(3)：639–646.(JIANG Xiuzi，WEN Baoping，ZHANG Mimi，et al. Comparative analysis of creep shear behavior of cohesive soil under different states[J]. Journal of Engineering Geology，2018，26(3)：639–646.(in Chinese))
[16]	张先伟，王常明，李军霞，等. 蠕变条件下软土微观孔隙变化特性[J]. 岩土力学，2010，31(4)：1 061–1 067.(ZHANG Xianwei，WANG Changming，LI Junxia，et al. Variation characteristics of soft clay micropore in the creep condition[J]. Rock and Soil Mechanics，2010，31(4)：1 061–1 067.(in Chinese))
[21]	陈琼，崔德山，王菁莪，等. 不同固结状态下黄土坡滑坡滑带土的蠕变试验研究[J]. 岩土力学，2019，40(5)：1–8.(CHEN Qiong，CUI Deshan，WANG Jinge，et al. Experimental study of creep characteristics of sliding zone soil of Huangtupo landslide under different consolidation stresses[J]. Rock and Soil Mechanics，2019，40(5)：1–8.(in Chinese))
[19]	陈卫兵，郑颖人，冯夏庭，等. 考虑岩土体流变特性的强度折减法研究[J]. 岩土力学，2008，29(1)：101–105.(CHEN Weibing，ZHENG Yingren，FENG Xiating，et al. Study on strength reduction technique considering rheological property of rock and soil medium[J]. Rock and Soil Mechanics，2008，29(1)：101–105.(in Chinese))
[26]	张杰豪，胡新丽，徐楚，等. 基于物理模型试验的多层滑带堆积层滑坡－抗滑桩受力特征[J]. 地质科技通报，2021，40(4)：171–178.(ZHANG Jiehao，HU Xinli，XU Chu，et al. Mechanical characteristics of anti-slide pile of multi-layer sliding zone accumulation layer based on physical model test[J]. Bulletin of Geological Science and Technology，2021，40(4)：171–178.(in Chinese))
[22]	谭福林，胡新丽，张玉明，等. 不同类型滑坡渐进破坏过程与稳定性研究[J]. 岩土力学，2016，37(增2)：597–606.(TAN Fulin，HU Xinli，ZHANG Yuming，et al. Study of progressive failure processes and stabilities of different types of landslides[J]. Rock and Soil Mechanics，2016，37(Supp.2)：597–606.(in Chinese))
[29]	阿比尔的，冯夏庭，郑颖人，等. 岩土类材料应变分析与基于极限应变判据的极限分析[J]. 岩石力学与工程学报，2015，34(8)：1 552– 1 560.(ABI Erdi，FENG Xiating，ZHENG Yingren，et al. Strain analysis and numerical analysis based on limit strain for geomaterials[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(8)：1 552–1 560.(in Chinese))