Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (5): 1338-1346.doi: 10.13278/j.cnki.jjuese.20210021

Previous Articles     Next Articles

Experimental Study on Cracking Characteristics of Loess Steep Slope Under Intensive Rainfall

Wang Lei1,2, Li Rongjian1, Yang Zhengwu3, Liu Junding1, Bai Weishi1   

  1. 1. Institute of Geotechnical Engineering, Xi'an University of Technology, Xi'an 710048, China;
    2. Architectural Engineering Institute, Yan'an University, Yan'an 716000, Shaanxi, China;
    3. The IT Electronics Eleventh Design & Research Institute Scientific and Technological Engineering Corporation Limited, Xi'an 710100, China
  • Received:2021-01-20 Online:2021-09-26 Published:2021-09-29
  • Supported by:
    Supported by the National Natural Science Foundation of China (51768073), the Special Scientific Research Project of Shaanxi Provincial Department of Education (20JK0991) and the Research Program of Yan'an University (YDQ2019-33)

PDF (PC)

88

Abstract: Instability of loess slopes induced by rainfall is severely destructive. In order to study the cracking characteristics of loess steep slopes under intensive rainfall, the field artificially simulated moderate rain and heave rain tests of loess steep slopes were carried out in Wuqi, northern Shaanxi Province. The water content and earth pressure of slopes were analyzed, along with their cracking characteristics and cracking patterns. The engineering effects of geotextile isolation grooves were summarized. The results showed that the rise of water content and earth pressure of the loess steep slope was little after 24 h moderate rain; While a thicker adjacent saturated zone was formed on the surface after 144 h heave rain, and the earth pressure increased significantly. The main failure sequence of the loess steep slope under the condition of 144 h heavy rain was top cracking, surface bulging, and local sliding in. The top crack of the slope is a precursor, and the failure mode of the slope is a shallow failure from the top to the surface of the slope.

Key words: intensive rainfall, loess steep slope, cracking characteristics, isolation groove, lateral constraint

CLC Number: 

  • TU43
[1] 黄润秋. 20世纪以来中国的大型滑坡及其发生机制[J]. 岩石力学与工程学报, 2007, 26(3):433-454. Huang Runqiu. Large-Scale Landslides and Their Sliding Mechanisms in China Since the 20th Century[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(3):433-454.
[2] 王进, 冷先伦, 阮航, 等. 强降雨作用下浅层滑坡的入渗及稳定性[J]. 东南大学学报(自然科学版), 2016, 46(增刊1):153-158. Wang Jin, Leng Xianlun, Ruan Hang, et al. Infiltration and Stability of Shallow Landslide Under Intensive Rainfall Conditions[J]. Journal of Southeast University (Natural Science Edition), 2016, 46(Sup.1):153-158.
[3] 段钊, 赵法锁, 陈新建. 陕北黄土高原区滑坡发育类型与时空分布特征:以吴起县为例[J]. 灾害学, 2011, 26(4):52-56. Duan Zhao, Zhao Fasuo, Chen Xinjian. Types and Spatio-Temporal Distribution of Loess Landslides in Loess Plateau Region:A Case Study in Wuqi County[J]. Journal of Catastrophology, 2011, 26(4):52-56.
[4] Tu X B, Kwong A K L, Dai F C, et al. Field Monitoring of Rainfall Infiltration in a Loess Slope and Analysis of Failure Mechanism of Rainfall-Induced Landslides[J]. Engineering Geology, 2009, 105:134-150.
[5] 陈兴岗, 杨果林. 南友公路膨胀土路堑边坡的现场监测分析[J]. 铁道建筑, 2007, 4(1):71-73. Chen Xinggang, Yang Guolin. Field Monitoring Analysis of Expansive Soil Cutting Slope of Nanyou Highway[J]. Railway Engineering, 2007, 4(1):71-73.
[6] 武彩萍, 骆亚生, 陈伟, 等. 降雨对黄土裸坡坡面形态影响的室内模型试验[J]. 水土保持通报, 2013, 33(1):115-119. Wu Caiping, Luo Yasheng, Chen Wei, et al. Indoor Model Experiment for Rainfall Effects on Bare Loess Slope Shape[J]. Bulletin of Soil and Water Conservation, 2013, 33(1):115-119.
[7] 常晓军, 葛伟亚, 于洋, 等. 福建省永泰县东门旗山滑坡诱发机理与防治措施[J]. 吉林大学学报(地球科学版), 2019, 49(4):1063-1072. Chang Xiaojun, Ge Weiya, Yu Yang, et al. Mechanismand Mitigation Measures of Qishan Landslide of Yongtai in Fujian Province[J]. Journal of Jilin University (Earth Science Edition), 2019, 49(4):1063-1072.
[8] 林鸿州, 于玉贞, 李广信, 等. 降雨特性对土质边坡失稳的影响[J]. 岩石力学与工程学报, 2009, 28(1):198-204. Lin Hungchou, Yu Yuzhen, Li Guangxin, et al. Influence of Rainfall Characteristics on Soil Slope Failure[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(1):198-204.
[9] 詹良通, 吴宏伟, 包承纲, 等. 降雨入渗条件下非饱和膨胀土边坡原位监测[J]. 岩土力学, 2003, 24(2):151-158. Zhan Liangtong, NG C W W, Bao Chenggang, et al. Artificial Rainfall Infiltration Tests on a Well-Instrumented Unsaturated Expansive Soil Slope[J]. Rock and Soil Mechanics, 2003, 24(2):151-158.
[10] 郑光, 许强, 林峰, 等. 2012年6·29贵州岑巩龙家坡滑坡灾害的基本特征与成因机理:一个由侧向剪切扰动诱发大型滑坡的典型案例[J]. 吉林大学学报(地球科学版), 2014, 44(3):932-945. Zheng Guang, Xu Qiang, Lin Feng, et al. Characteristics and Failure Mechanism of the Longjiapo Landslide in Cengong, Guizhou on June 29, 2012:A Case of Catastrophic Landslides Triggered by Lateral Shear Disturbance[J]. Journal of Jilin University (Earth Science Edition), 2014, 44(3):932-945.
[11] 蒋泽锋, 朱大勇. 强降雨条件下具有张裂缝边坡临界滑动场[J]. 岩土力学, 2016, 37(增刊2):25-34. Jiang Zefeng, Zhu Dayong. Critical Slip Field of Slope with Tension Crack Under Intensive Rainfall[J]. Rock and Soil Mechanics, 2016, 37(Sup.2):25-34.
[12] 徐学军, 王罗斌, 何子杰. 坡顶竖向裂缝对边坡稳定性影响的研究[J]. 人民长江, 2009, 40(22):46-48. Xu Xuejun, Wang Luobin, He Zijie. Study of Influence of Vertical Cracks on Slope Stability[J]. Yangtze River, 2009, 40(22):46-48.
[13] 刘博, 孙树林, 刘俊, 等. 降雨入渗条件下裂隙发育的黄土边坡稳定性分析研究[J]. 工程勘察, 2016, 44(10):16-21, 78. Liu Bo, Sun Shulin, Liu Jun, et al. Fissure Developed Loess Slope Stability Analysis Under Rainfall Infiltration[J]. Geotechnical Investigation & Surveying, 2016, 44(10):16-21, 78.
[14] 刘华磊, 徐则民, 张勇, 等. 降雨条件下边坡裂缝的演化机制及对边坡稳定性影响:以云南省双柏县丁家坟滑坡为例[J]. 灾害学, 2011, 26(1):26-29. Liu Hualei, Xu Zemin, Zhang Yong, et al. Evolutionary Mechanism of Slope Fissures During Rainfall and Their Effection Slope Stability:A Case Study of Dingjiafen Landslide in Shuangbo Country, Yunnan[J]. Journal of Catastrophology, 2011, 26(1):26-29.
[15] 张我华, 陈合龙, 陈云敏. 降雨裂缝渗透影响下山体边坡失稳灾变分析[J]. 浙江大学学报(工学版), 2007, 41(9):1429-1435, 1442. Zhang Wohua, Chen Helong, Chen Yunmin. Catastrophe Analysis for Disaster of Mountain Slope Stability Affected by Rainfall Seepage and Surface Crack[J]. Journal of Zhejiang University (Engineering Science), 2007, 41(9):1429-1435, 1442.
[16] 潘俊义, 王治军, 李荣建, 等. 现场人工降雨边坡试验中隔渗和减阻的侧向边界实现方法:中国, CN201710251899.8[P]. 2017-04-18. Pan Junyi, Wang Zhijun, Li Rongjian, et al.Realization Method of Lateral Boundary for Seepage Isolation and Drag Reduction in Field Artificial Rainfall Slope Test:China, CN201710251899.8[P]. 2017-04-18.
[1] Qiao Feng, Bo Jingshan, Chang Chaoyu, Li Qi, Yang Yuanmin. Statistical Analysis of Physical and Mechanical Properties of Three Special Soils [J]. Journal of Jilin University(Earth Science Edition), 2021, 51(5): 1356-1365.
[2] Li Liyun, Wang Ziying, Wang Xiaojing, Du Xiuli. Study on Deformation Characteristics of Ventilation Shaft Section in Foundation Pit Excavation Adjacent to Railway [J]. Journal of Jilin University(Earth Science Edition), 2021, 51(5): 1441-1451.
[3] Meng Chang, Tang Liang. Effects of Ground Motion Characteristics on Seismic Responses of Pile-Supported Wharf in Liquefiable Soils [J]. Journal of Jilin University(Earth Science Edition), 2021, 51(5): 1463-1472.
[4] Liu Jie, Li Lihua, Lin Yueshui, Chen Wei, Li Xiaoming. Depth Erosion and Tracing of Overtopping Landslide Dam Breach [J]. Journal of Jilin University(Earth Science Edition), 2020, 50(6): 1795-1803.
[5] Jiang Xiangang, Wu Lei. Influence of Initial Soil Moisture on Breaching Mechanism of Natural Dam [J]. Journal of Jilin University(Earth Science Edition), 2020, 50(1): 185-193.
[6] Luo Zujiang, Ning Di, Du Jingjing, Lu Wei. Influence of Building Load and Groundwater Exploitation on Land Subsidence in Shengze,Wujiang [J]. Journal of Jilin University(Earth Science Edition), 2019, 49(2): 514-525.
[7] Li Lunji, Yao Qingqing, An Yuke. Excavation and Advance Support Effect of Old Landslide [J]. Journal of Jilin University(Earth Science Edition), 2018, 48(6): 1767-1777.
[8] Shi Youzhi, Chai Jianfeng, Lin Shuzhi, Li Xiufang. Numerical Analysis on Influence of Boundary Conditions on Seismic Dynamic Response of Underground Utility Tunnels [J]. Journal of Jilin University(Earth Science Edition), 2018, 48(1): 213-225.
[9] Fu Jiankang, Luo Gang, Hu Xiewen. Physical Model Experiment on Overtopping Overflow Failure of Landslide Dam [J]. Journal of Jilin University(Earth Science Edition), 2018, 48(1): 203-212.
[10] Lei Huayang, Wang Tieying, Zhang Zhipeng, Lu Haibin, Liu Min. Macro-and Meso-Analysis of Newly Formed Highly Viscous Dredger Fill Under Vacuum Preloading Using Particle Flow Theory [J]. Journal of Jilin University(Earth Science Edition), 2017, 47(6): 1784-1794.
[11] Pan Jianli. Calculation Method and Application of Soil Deformation Induced by Pipe Jacking Construction [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(5): 1458-1465.
[12] Wei Lingyun,Qin Shengwu,Chen Huie. Analysis on Rebounding Displacement of Single Pile and Pile Group Under Excavation [J]. Journal of Jilin University(Earth Science Edition), 2014, 44(2): 584-590.
[13] SHEN Shi-wei, NAI Lei, XU Yan. Quasi-Equal Interval QGM (1,1) Model Forecasting Method and Its Application in Settlement Prediction of Turfy Soil Subgrade [J]. J4, 2011, 41(4): 1098-1103.
[14] SHI Shao-min. Dynamic Method for Calculating the Compressive Modulus of Vibro-Replacement Stone Column [J]. J4, 2011, 41(1): 172-176.
[15] ZHANG Xian-wei, WANG Chang-ming, ZHANG Shu-hua. Comparative Analysis of Soft Clay Creep Data Processing Method [J]. J4, 2010, 40(6): 1401-1408.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] TANG Jie, L Chuan, LI Zhao-yang, WANG Chen-ye, ZHANG Jing-cheng,LI Hai-yi. Evaluation of Eco-Environmental Quality Based on Coupling of Gray-Clustering and 3S Method-A Case Study on Da’an, Jilin Province[J]. J4, 2008, 38(6): 1037 -1043 .
[2] SHU Long-cang, LI Wei. Analysis on the Stochastic Characteristic of the Hydrauic Conductivity of Bottom Stratum, Beitang Reservoir, Tianjin City[J]. J4, 2007, 37(2): 216 -0220 .
[3] WANG Jin-sheng，TENG Yan-guo，WU Dong-jie. Numerical Simulation Model of Immobile Water and Non-Equilibrium Sorption on the Solute Transport-MIENESOR[J]. J4, 2007, 37(2): 266 -270 .
[4] SU Xiao-si, LIN Xue-yu, DONG Wei-hong, WAN Yu-yu. Application of Inverse Geochemical Modeling in the Correction of Groundwater 14C Dating:advances and Thoughts[J]. J4, 2007, 37(2): 271 -277 .
[5] LIU Hang-jun,LIU Zhi-hong,FENG Yong-jiu, REN Yan-guang, LI Chun-bai. Structural Characteristics and Deformation Sequence of the Urxun Sag in Hailaer Basin, China[J]. J4, 2006, 36(02): 215 -0220 .
[6] YANG Jun-peng, HU Ke, LIU Yu-ying. The Stable Carbon Isotopic Characteristics of Carbonates in Salini alkani Soil in the West Jilin Province[J]. J4, 2006, 36(02): 245 -0249 .
[7] LIU Zhao-shun, SHANG Jin-cheng, XU Wen-liang, JIN Ke. Analysis of Coordinated Development Between Resourceful County Economy and Ecoenvironment in Eastern Jilin Province[J]. J4, 2006, 36(02): 265 -0269 .
[8] LIU Jin-hui， SUN Zhan-xue， SHI Wei-jun. The Discussions on Some Problems of Sandstone Type Uranium Ore by Using Uranium Isotopes[J]. J4, 2006, 36(04): 516 -520 .
[9] LI Xue-ping, TANG Hui-ming. Application of GIS[CD*2]Based Grouped Data Logistic Model in Evaluation of Slope Stability[J]. J4, 2005, 35(03): 361 -0365 .
[10] YANG Chun-mei, LI Hong-qi,LU Da-wei,ZHANG Fang-li,GAO Yuan,SHAO Ying-chao. The Relationship Between Rock Resistivity and Water Saturation in WaterDriveOil and OilDriveWater Process[J]. J4, 2005, 35(05): 667 -671 .
Copyright © Journal of Jilin University(Earth Science Edition), All Rights Reserved.
Tel: +86-431-88502374；13756165364　E-mail: xuebao1956@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd