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《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

卷:

第43卷

期数:

2021年第04期

页码:

744-759

栏目:

工程地质

出版日期:

2021-07-15

文章信息/Info

Title:

Influencing Factors on the Shear Strength of Sliding Zone of Loess-Hipparion Red Clay Landslide

文章编号:

1672-6561(2021)04-0744-16

作者:

祝艳波; 韩宇涛; 苗帅升; 李红飞; 李文杰; 兰恒星

(长安大学 地质工程与测绘学院,陕西 西安 710054)

Author(s):

ZHU Yan-bo;  HAN Yu-tao;  MIAO Shuai-sheng;  LI Hong-fei;  LI Wen-jie;  LAN Heng-xing

(School of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, Shaanxi, China)

关键词:

黄土;  三趾马红土;  滑坡;  齿面角度;  含水率;  干密度;  剪胀特性;  抗剪强度

Keywords:

loess;  Hipparion red clay;  landslide;  interface angle;  moisture;  density;  shear dilatancy characteristic;  shear strength

分类号:

P642.3

DOI:

10.19814/j.jese.2021.05024

文献标志码:

A

摘要:

中国西北地区黄土广泛沉积于三趾马红土之上形成“双层异质”接触层面,控制和影响黄土滑坡的形成。为研究黄土-三趾马红土界面剪切力学特性,研制可视化界面直剪仪,开展界面试样剪切试验,探讨齿面角度、含水率、干密度对其剪切破坏模式、强度与变形特性影响规律。结果表明:试样均沿界面产生剪切破坏,试样剪切破坏模式可分为齿间滑动、齿间滑动-齿面剪断、齿面剪断3种; 界面试样剪切应力-位移曲线呈应变软化型,峰值强度后应变“跳跃”及“塑态”特征反映出界面的脆性与塑性剪断破坏特征,剪切刚度、剪切破坏位移演化规律均受界面接触条件影响; 界面剪切过程存在明显剪胀效应,剪胀位移演化规律反映了剪切过程的齿面挤密、齿间滑动、齿面剪断与界面摩擦阶段; 界面试样强度随界面接触条件均呈非线性变化,齿面角度越大,峰值强度与残余强度越高,试样剪切破坏模式越趋于脆性齿面剪断; 含水率越高,界面峰值强度越低,试样剪切破坏模式越趋于塑性齿面剪断; 界面试样干密度越大,峰值强度越大,残余强度越低,试样剪切破坏模式越趋于脆性的齿间滑动-齿面剪断。研究成果可为进一步研究黄土-三趾马红土界面强度准则,揭示黄土-三趾马红土复合型滑坡启动机制提供参考。

Abstract:

Loess is widely deposited on Hipparion red clay forming weak interfaces, which controls the formation of loess landslide in Northwest China. In order to investigate the influ-ences of interface angle, moisture and density on shear failure mode, strength and deformation characteristics of interface samples, a series of shearing experiments were performed using a developed shear equipment. The results show that the shear plane of samples all generates along the contact interface, and the shear failure modes can be divided into sliding, sliding & shear-off, and shear-off; the shear stress-displacement curves are strain softening, and the shear stiffness and shear failure displacement are affected by the interface contact conditions; the “jumping” and “plastic” phenomena of post-peak strength reflect the brittle and plastic shear failure features of the interfaces; there is obvious dilation effect in the shear process, and the evolution of shear dilatancy displacement reflects the four stages of the shear process, including compaction of tooth surface, sliding along tooth surface, shear-off of tooth and interface friction; the shear strength of interface samples between loess and Hipparion red clay changes nonlinearly with the interface contact conditions; the peak strength and residual strength increase with the interface contact angle, and the failure mode tends to brittle shear-off; the peak strength decreases with the moisture, and the failure mode tends to plastic shear-off; the higher the density is, the higher the peak strength is, the lower the residual strength is, and the failure mode tends to brittle sliding and shear-off. The above results can provide references for studying the strength criterion of interfaces between loess and Hipparion red clay, and revealing the initiation mechanism of loess landslide.

参考文献/References:

[1] LAWRENCE J F,DENG T,XIE G P,et al.Observations on the Hipparion Red Clays of the Loess Plateau[J].Vertebrata PalAsiatica,2011,49(3):275-284. [2] PENG J B,WANG S K,WANG Q Y,et al.Distribution and Genetic Types of Loess Landslides in China[J].Journal of Asian Earth Sciences,2019,170:329-350. [3] 谌文武,刘 伟,林高潮,等.黄土-泥岩接触面滑坡滑带土力学特征研究[J].冰川冻土,2017,39(3):593-601. CHEN Wen-wu,LIU Wei,LIN Gao-chao,et al.Study on Mechanical Characteristics of Landslide and Sliding Zone Soil on Loess-mudstone Interface[J].Journal of Glaciology and Geocryology,2017,39(3):593-601. [4] LOPES M L.Soil-geosynthetic Interaction[M]∥SHUKLA S K.Handbook of Geosynthetic Engineering.London:ICE Publishing,2012:45-66. [5] 王 雷,赵法锁,程晓辉,等.黄土基岩接触面滑坡滑带土物理力学特性及微观结构[J].地球科学与环境学报,2017,39(3):450-458. WANG Lei,ZHAO Fa-suo,CHENG Xiao-hui,et al.Physical and Mechanical Properties and Microstructures of Slip Soil of Loess Bedrock Contact Landslide[J].Journal of Earth Sciences and Environment,2017,39(3):450-458. [6] VANGLA P,GALI M L.Effect of Particle Size of Sand and Surface Asperities of Reinforcement on Their Interface Shear Behaviour[J].Geotextiles and Geomembranes,2016,44(3):254-268. [7] 高俊合,于海学,赵维炳.土与混凝土接触面特性的大型单剪试验研究及数值模拟[J].土木工程学报,2000,33(4):42-46. GAO Jun-he,YU Hai-xue,ZHAO Wei-bing.Characteristics Study of Interface Between Soil and Concrete by Using Large Size Single Shear Apparatus and Numerical Analysis[J].China Civil Engineering Journal,2000,33(4):42-46. [8] CHAI J C,SAITO A.Interface Shear Strengths Between Geosynthetics and Clayey Soils[J].International Journal of Geosynthetics and Ground Engineering,2016,2:18-28. [9] 汪 优,任加琳,李 赛,等.土-结构接触面剪切全过程本构关系研究[J].湖南大学学报(自然科学版),2021,48(3):144-152. WANG You,REN Jia-lin,LI Sai,et al.Study on Shear Constitutive Relation of Soil-structure Interface in Whole Process[J].Journal of Hunan University(Na-tural Sciences),2021,48(3):144-152. [10] 殷宗泽,朱 泓,许国华.土与结构材料接触面的变形及其数学模拟[J].岩土工程学报,1994,16(3):14-22. YIN Zong-ze,ZHU Hong,XU Guo-hua.Numerical Simulation of the Deformation in the Interface Between Soil and Structural Material[J].Chinese Jounal of Geotechnical Engineering,1994,16(3):14-22. [11] 张冬霁,卢廷浩.一种土与结构接触面模型的建立及其应用[J].岩土工程学报,1998,20(6):65-69. ZHANG Dong-ji,LU Ting-hao.Establishment and Application of a Interface Model Between Soil and Structure[J].Chinese Jounal of Geotechnical Engineering,1998,20(6):65-69. [12] 杨有莲,朱俊高,余 挺,等.土与结构接触面力学特性环剪试验研究[J].岩土力学,2009,30(11):3256-3260. YANG You-lian,ZHU Jun-gao,YU Ting,et al.Experimental Study of Mechanical Behaviour of Soil-structure Interface by Ring Shear Test[J].Rock and Soil Mechanics,2009,30(11):3256-3260. [13] 金子豪,杨 奇,陈 琛,等.粗糙度对混凝土-砂土接触面力学特性的影响试验研究[J].岩石力学与工程学报,2018,37(3):754-765. JIN Zi-hao,YANG Qi,CHEN Chen,et al.Experimental Study on Effects of the Roughness on Mechanical Behaviors of Concrete-sand Interface[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(3):754-765. [14] CHUNGSIK Y,YUN S H.Effect of Drilling Fluid on Concrete-soil/rock Interface Shear Strength in Sea-water Drilling Environment[J].Marine Georesources and Geotechnology,2019,37(8):936-944. [15] 成 浩,陈晓斌,张家生,等.红黏土-混凝土结构接触面残余强度特性试验研究[J].中南大学学报(自然科学版),2017,48(9):2458-2464. CHENG Hao,CHEN Xiao-bin,ZHANG Jia-sheng,et al.Experimental Research on Residual Shear Str-ength of Red Clay-concrete Structure Interface[J].Journal of Central South University(Science and Technology),2017,48(9):2458-2464. [16] YAZDANI S,HELWANY S,OLGUN G.Influence of Temperature on Soil-pile Interface Shear Strength[J].Geomechanics for Energy and the Environment,2019,18:69-78. [17] FAKHARIAN K,EVGIN E.Stress-controlled Cyclic Interface Tests[C]∥The International Society of Offshore and Polar Engineers.The Proceedings of the Eighth(1998)International Offshore and Polar Engineering Conference.Montreal:The International Society of Offshore and Polar Engineers,1998:571-577. [18] MORTARA G,FERRARA D,FOTIA G.Simple Model for the Cyclic Behavior of Smooth Sand-steel Interfaces[J].Journal of Geotechnical and Geoenviron-mental Engineering,2010,136(7):1004-1009. [19] 朱俊高,汪 淼,黄 维,等.钢-土接触面位移与强度特性直剪试验[J].河海大学学报(自然科学版),2021,49(3):265-271. ZHU Jun-gao,WANG Miao,HUANG Wei,et al.Experimental Study on Displacement and Strength Behavior of Interface Between Soil and Steel Using Direct Shear Test[J].Journal of Hohai University(Na-tural Sciences),2021,49(3):265-271. [20] AFZALI-NEJAD A,LASHKARI A,SHOURIJEH P T.Influence of Particle Shape on the Shear Strength and Dilation of Sand-woven Geotextile Interfaces[J].Geotextiles and Geomembranes,2017,45(1):54-66. [21] AMMAR A,NAJJAR S,SADEK S.Mechanics of the Interface Interaction Between Hemp Fibers and Compacted Clay[J].International Journal of Geomechanics,2019,19(4):04019015. [22] SUZUKI M,KOYAMA A,KOCHI Y,et al.Interface Shear Strength Between Geosynthetic Clay Liner and Covering Soil on the Embankment of an Irrigation Pond and Stability Evaluation of Its Widened Sections[J].Soils and Foundations,2017,57(2):301-314. [23] 张传庆,崔国建,周 辉,等.锚杆杆体-砂浆界面剪切力学特性试验研究[J].岩石力学与工程学报,2018,37(4):821-828. ZHANG Chuan-qing,CUI Guo-jian,ZHOU Hui,et al.Study of Effect of Shear Velocity on Mechanical Characteristics of Bolt-grout Interface[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(4):821-828. [24] 张 嘎,张建民.循环荷载作用下粗粒土与结构接触面变形特性的试验研究[J].岩土工程学报,2004,26(2):254-258. ZHANG Ga,ZHANG Jian-min.Experimental Study on Cyclic Behavior of Interface Between Soil and Structure[J].Chinese Journal of Geotechnical Engineering,2004,26(2):254-258. [25] 孙铁成,高晓静,岳祖润,等.粉土-混凝土接触面冻结强度试验研究[J].岩石力学与工程学报,2020,39(5):1032-1039. SUN Tie-cheng,GAO Xiao-jing,YUE Zu-run,et al.Experimental Study on the Adfreezing Strength of the Interface Between Silt and Concrete[J].Chinese Journal of Rock Mechanics and Engineering,2020,39(5):1032-1039. [26] 方火浪,王文杰,施可南.粒状土与结构接触面多重剪切边界面模型[J].哈尔滨工业大学学报,2020,52(11):80-87. FANG Huo-lang,WANG Wen-jie,SHI Ke-nan.A Multi-shear Bounding Surface Model for Coarse Gra-nular Soil-structure Interfaces[J].Journal of Harbin Institute of Technology,2020,52(11):80-87. [27] 栾茂田,武亚军.土与结构间接触面的非线性弹性-理想塑性模型及其应用[J].岩土力学,2004,25(4):507-513. LUAN Mao-tian,WU Ya-jun.A Nonlinear Elasto-perfectly Plastic Model of Interface Element for Soil-structure Interaction and Its Applications[J].Rock and Soil Mechanics,2004,25(4):507-513. [28] 胡黎明,濮家骝.土与结构物接触面物理力学特性试验研究[J].岩土工程学报,2001,23(4):431-435. HU Li-ming,PU Jia-liu.Experimental Study on Mechanical Characteristics of Soil-structure Interface[J].Chinese Journal of Geotechnical Engineering,2001,23(4):431-435. [29] 赵少飞,戴志广,刘 鑫,等.扰动土-结构接触面抗剪强度特性试验研究[J].地下空间与工程学报,2018,14(1):67-71,228. ZHAO Shao-fei,DAI Zhi-guang,LIU Xin,et al.Experimental Research of Shear Strength Characteristics on Disturbed Soil-structure Interfaces[J].Chinese Journal of Underground Space and Engineering,2018,14(1):67-71,228. [30] 成 浩,王 晅,张家生,等.颗粒粒径对粗粒土-混凝土接触面剪切特性影响试验研究[J].应用基础与工程科学学报,2018,26(1):145-153. CHENG Hao,WANG Xuan,ZHANG Jia-sheng,et al.Effects of Particle Size on Shear Behavior of Interface Between Coarse-grained Soil and Concrete[J].Journal of Basic Science and Engineering,2018,26(1):145-153. [31] SAMADHIYA N K,VILADKAR M N,AL-OBAYDI M A.Three-dimensional Joint/Interface Element for Rough Undulating Major Discontinuities in Rock Ma-sses[J].International Journal of Geomechanics,2008,8(6):327-335. [32] DEJONG J T,WESTGATE Z J.Role of Initial State,Material Properties,and Confinement Condition on Local and Global Soil-structure Interface Behavior[J].Journal of Geotechnical and Geoenvironmental Engineering,2009,135(11):1646-1660. [33] GHAZVINIAN A H,TAGHICHIAN A,HASHEMI M,et al.The Shear Behavior of Bedding Planes of Weakness Between Two Different Rock Types with High Strength Difference[J].Rock Mechanics and Rock Engineering,2010,43(1):69-87. [34] 王永洪,张明义,白晓宇,等.不同含水率状态下黏性土-混凝土界面剪切特性室内试验研究[J].防灾减灾工程学报,2018,38(1):118-123,192. WANG Yong-hong,ZHANG Ming-yi,BAI Xiao-yu,et al.Laboratory Experimental Study on Shear Beha-vior of Clayey Soil-concrete Interface Under Different Moisture Conditions[J].Journal of Disaster Prevention and Mitigation Engineering,2018,38(1):118-123,192. [35] CANAKCI H,HAMED M,CELIK F,et al.Friction Characteristics of Organic Soil with Construction Ma-terials[J].Soils and Foundations,2016,56(6):965-972. [36] SAYEED M M A,RAMAIAH B J,RAWAL A.Interface Shear Characteristics of Jute/Polypropylene Hybrid Nonwoven Geotextiles and Sand Using Large Size Direct Shear Test[J].Geotextiles and Geomembranes,2014,42(1):63-68. [37] LING H I,WANG J P,LESHCHINSKY D.Cyclic Behaviour of Soil-structure Interfaces Associated with Modular-block Reinforced Soil-retaining Walls[J].Geosynthetics International,2008,15(1):14-21. [38] VANGLA P,GALI M L.Shear Behavior of Sand-smooth Geomembrane Interfaces Through Micro-to-pographical Analysis[J].Geotextiles and Geomembranes,2016,44(4):592-603. [39] CHEN X B,ZHANG J S,XIAO Y J,et al.Effect of Roughness on Shear Behavior of Red Clay-concrete Interface in Large-scale Direct Shear Tests[J].Canadian Geotechnical Journal,2015,52(8):1122-1135. [40] 张 嘎,张建民.粗粒土与结构接触面单调力学特性的试验研究[J].岩土工程学报,2004,26(1):21-25. ZHANG Ga,ZHANG Jian-min.Experimental Study on Monotonic Mechanical Properties of the Interface Between Soil and Structure[J].Chinese Journal of Geotechnical Engineering,2004,26(1):21-25. [41] BAI H Y,LI W P,DING Q F,et al.Interaction Mechanism of the Interface Between a Deep Buried Sand and a Paleo-weathered Rock Mass Using a High Normal Stress Direct Shear Apparatus[J].International Journal of Mining Science and Technology,2015,25(4):623-628. [42] JAHANIAN H,SADAGHIANI M H.Experimental Study on the Shear Strength of Sandy Clay Infilled Regular Rough Rock Joints[J].Rock Mechanics and Rock Engineering,2014,48(3):907-922. [43] 乔来军,周国庆,商翔宇,等.不同含水量黄土-砂浆接触特性试验应用研究[J].地下空间与工程学报,2010,6(增2):1660-1664. QIAO Lai-jun,ZHOU Guo-qing,SHANG Xiang-yu,et al.Study on the Influence of Water Content on Mechanical Behavior of Loess-sand Mortar Interface and Its Application[J].Chinese Journal of Underground Space and Engineering,2010,6(S2):1660-1664. [44] 周 蓉.复杂条件下砂-黄土界面剪切力学特性试验研究[D].青岛:青岛理工大学,2018. ZHOU Rong.Study on Shear Mechanical Properties of Sand-loess Under Complex Condition[D].Qing-dao:Qingdao University of Technology,2018. [45] 何鹏飞,马 巍,穆彦虎,等.黄土-砂浆块界面剪切特性试验及本构模型研究[J].岩土力学,2019,40(增1):82-90,98. HE Peng-fei,MA Wei,MU Yan-hu,et al.Experimental Analysis of Interfacial Shear Behavior of Loess-mortar Block and Construction of Constitutive Model[J].Rock and Soil Mechanics,2019,40(S1):82-90,98. [46] YANG X Y,WANG Y C,SUN Z J.The Shearing Anisotropy Characteristics on the Interface of Loess with Bedrock[J].Bulletin of Engineering Geology and the Environment,2020,79:5205-5212. [47] 苗帅升.黄土-三趾马红土接触界面剪切力学特性试验研究[D].西安:长安大学,2020. MIAO Shuai-sheng.Experimental Study on the Shear Mechanical Properties of Interface of Loess and Hip-parion Red Clay[D].Xi'an:Chang'an University,2020.

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　LI Wen,LONG Jian-hui,LI Tong-lu,et al.Residual Shear Strength Characteristics of Landslide Soil in Loess Landslide of Jingyang Southern Highland, Shaanxi[J].Journal of Earth Sciences and Environment,2012,34(04):95.
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[6]习羽,李同录,邢鲜丽.灌渠渗漏诱发的黄土滑坡泥流触发机理分析[J].地球科学与环境学报,2017,39(01):135.
　XI Yu,LI Tong-lu,XING Xian-li.Analysis of the Triggering Mechanism of a Loess Flowslide Induced by Water Canal Leakage[J].Journal of Earth Sciences and Environment,2017,39(04):135.
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[8]赵法锁,戚炜,王艳婷.三向应力及湿度状态改变对 非饱和黄土力学特征的影响[J].地球科学与环境学报,2007,29(01):80.
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　LI Xun-chang,MEN Yu-ming,LIU Ni-na,et al.Grouting applied to treatment of roadbase cave in loess areas[J].Journal of Earth Sciences and Environment,2004,26(04):38.

备注/Memo

备注/Memo:

收稿日期:2021-05-17; 修回日期:2021-06-10
基金项目:国家自然科学基金项目(41877247); 国家自然科学基金重大项目(42041006)
作者简介:祝艳波(1985-),男,辽宁阜新人,副教授,工学博士,E-mail:zhuyanbo@chd.edu.cn。

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更新日期/Last Update: 2021-04-20