Supervisor：China Geological Survey
Sponsored by：XI'an Center of China Geological Survey
Geological Society of China
| Citation: |
YU Guoqiang，ZHU Lifeng，ZHANG Xia，et al. Effect of Collapse-type Lateral Pressure Induced by Irrigation on Loess Landslide[J]. Northwestern Geology，2025，58（2）：111−120. doi: 10.12401/j.nwg.2024111
|
Loess collapse-type lateral pressure have a landslide-promoting effect in loess slope areas, which is a basic scientific problem in the study of loess landslides induced by irrigation. A study on collapse tests and slope stability simulations of loess were conducted. The variability of loess collapse-type lateral pressure in the Heifangtai area and its sliding mechanism has been analyzed. The results indicate that Heifangtai loess is self-weighted collapsible loess; soil of the irrigated area at depths of 0-15 m are slightly collapsible; soil at depths of 20-25 m are moderately collapsible loess, and the loess in the unirrigated area is highly collapsible. As the water content of the slope increases from 4% to 20%, the total slope displacement is predominantly horizontal, increasing from 12 mm to 140 mm, the lateral pressure coefficient also gradually increases. In saturated state, the maximum lateral pressure reaches 123 kPa when collapsible deformation occurs, the collapse-type lateral pressure coefficient increases of up to 1.4 times, and horizontal deformation is also correspondingly large. Collapse action leads to tensile stresses in the upper part of the slope, making it prone to collapse-type crack formation in the soil below the back edge of the landslide at depths of up to 5 m, resulting in dominant channels of surface water infiltration and forming landslide scarps. What’s more, lateral pressure pointing to the critical surface is generated inside of the slope due to the stress concentration, which expands to the interior of the slope along the collapse-type crack of the slope shoulder, and shear damage occurs along the curved weak zone until instability occurs. Considering that the promotion of landslides by lateral pressure is more consistent with the actual situation and can better characterize the influencing factors of irrigated loess landslides. The results of this research help to improve loess landslide–induced disaster theory, and provide reference for the precise early warning of loess landslide disasters.
|
李同录, 李颖喆, 赵丹旗, 等. 对水致黄土斜坡破坏模式及稳定性分析原则的思考[J]. 中国地质灾害与防治学报, 2022, 33（2）: 25−32.
LI Tonglu, LI Yingzhe, ZHAO Danqi, et al. Thoughts on modes of loess slope failure triggered by water infiltration and the principals for stability analysis[J]. The Chinese Journal of Geological Hazard and Control,2022,33(2):25−32.
|
|
孙彬, 谷天峰, 孔嘉旭, 等. 非饱和黄土电阻率和含水率间关系试验研究[J]. 西北地质, 2020, 53（4）: 216−222.
SUN Bin, GU Tianfeng, KONG Jiaxu, et al. Experimental research on relationship between resistivity and moisture content of unsaturated loess[J]. Northwestern Geology,2020,53(4):216−222.
|
|
田中英, 张茂省, 冯立, 等. 基于综合物探的黄土滑坡优势通道探测[J]. 西北地质, 2019, 52（2）: 172−180.
TIAN Zhongying, ZHANG Maosheng, FENG Li, et al. Preferential Passage Detection of Loess Landslide Based on Integrated Geophysical Exploration[J]. Northwestern Geology,2019,52(2):172−180.
|
|
吴玮江, 宿星, 叶伟林, 等. 饱和黄土滑坡形成中的侧压力作用——以甘肃黑方台为例[J]. 岩土工程学报, 2018, 40（S1）: 135−140. doi: 10.11779/CJGE2018S1022
WU Weijiang, SU Xing, YE Weilin, et al. Lateral pressure in formation of saturated loess landslide——Case study of Heifangtai Gansu Province[J]. Chinese Journal of Geotechnical Engineering,2018,40(S1):135−140. doi: 10.11779/CJGE2018S1022
|
|
赵宽耀, 许强, 张先林, 等. 黑方台浅层黄土渗透特性对比试验研究[J]. 工程地质学报, 2018, 26（2）: 459−466.
ZHAO Kuanyao, XU Qiang, ZHANG Xianlin, et al. Infiltration characteristics of topsoil at Heifangtai in Gansu province[J]. Journal of Engineering Geology,2018,26(2):459−466.
|
|
赵志强, 戴福初, 闵弘, 等. 原状黄土−古土壤中水分入渗过程研究[J]. 岩土力学, 2021, 42（9）: 2611−2621.
ZHAO Zhiqiang, DAI Fuchu, MIN Hong, et al. Research on infiltration process in undisturbed loess-paleosol sequence[J]. Rock and Soil Mechanics,2021,42(9):2611−2621.
|
|
张炜. 黄土力学性质试验中的若干问题[J]. 工程勘察, 1995, 3: 6−12.
ZHANG Wei. Some problems in the mechanical properties test of loess[J]. Geotechnical Investigation & Surveying,1995,3:6−12.
|
|
周飞, 许强, 亓星, 等. 灌溉诱发突发性黄土滑坡机理研究[J]. 山地学报, 2020, 38（1）: 73−82.
ZHOU Fei, XU Qiang, QI Xing, et al. The mechanism study of the irrigation-induced sudden loess landslides[J]. Mountain Research,2020,38(1):73−82.
|
|
朱立峰. 黑方台滑坡群控制因素与外动力条件分析[J]. 西北地质, 2019, 52（3）: 217−222.
ZHU Lifeng. Analysis of control factors and external force for the landslides in heifangtai area[J]. Northwestern Geology,2019,52(3):217−222.
|
|
Gu T, Wang J, Lin H, et al. The Spatiotemporal Relationship between Landslides and Mechanisms at the Heifangtai Terrace, Northwest China[J]. Water,2021,13(22):3275.
|
|
Gu T, Zhang M, Wang J, et al. The effect of irrigation on slope stability in the Heifangtai Platform, Gansu Province, China[J]. Engineering Geology,2019,248:346−356.
|
|
Hinds E, Lu N, Mirus B, et al. Effects of infiltration characteristics on spatial-temporal evolution of stability of an interstate highway embankment[J]. Journal of Geotechnical and Geoenvironmental Engineering,2019,145(9):05019008.
|
|
Juang C H, Dijkstra T, Wasowski J, et al. Loess geohazards research in China: advances and challenges for mega engineering projects[J]. Engineering geology,2019,251:1−10.
|
|
Lu N, Sener K B, Wayllace A, et al. Analysis of rainfall-induced slope instability using a field of local factor of safety[J]. Water Resources Research,2012,48(9):W09524.
|
|
Peng D, Xu Q, Liu F, et al. Distribution and failure modes of the landslides in Heitai terrace, China[J]. Engineering Geology,2018,236:97−110.
|
|
Shahrokhabadi S, Vahedifard F, Ghazanfari E, et al. Earth pressure profiles in unsaturated soils under transient flow[J]. Engineering Geology,2019,260:105218.
|
|
Shao W, Yang Z, Ni J, et al. Comparison of single-and dual-permeability models in simulating the unsaturated hydro-mechanical behavior in a rainfall-triggered landslide[J]. Landslides,2018,15(12):2449−2464.
|
|
Thomas M A, Mirus B B, Collins B D, et al. Variability in soil-water retention properties and implications for physics-based simulation of landslide early warning criteria[J]. Landslides,2018,15(7):1265−1277.
|
|
Wang L Q, Shao S J, She F T. A new method for evaluating loess collapsibility and its application[J]. Engineering Geology,2020,264:105376.
|
|
Wayllace A, Lu N, Thunder B. Hydrological Behavior of an Infiltration Induced Landslide in Colorado, USA[C]//Geo-Congress 2019: Embankments, Dams, and Slopes. Reston, VA: American Society of Civil Engineers, 2019, 213−222.
|
|
Xu L, Dai F, Gong Q, et al. Irrigation-induced loess flow failure in Heifangtai Platform, North-West China[J]. Environmental Earth Sciences,2011,66:1707−1713.
|
|
Xu L, Yan D. The groundwater responses to loess flowslides in the Heifangtai platform[J]. Bulletin of Engineering Geology and the Environment,2019,78(7):4931−4944.
|
|
Xu Q, Zhao K, Liu F, et al. Effects of land use on groundwater recharge of a loess terrace under long-term irrigation[J]. Science of the Total Environment,2021,751:142340.
|
|
Yang H, Xie W L, Liu Q Q, et al. Three-stage collapsibility evolution of Malan loess in the Loess Plateau[J]. Catena,2022,217:106482.
|
|
Yang K H, Nguyen T S, Rahardjo H,et al. Deformation characteristics of unstable shallow slopes triggered by rainfall infiltration[J]. Bulletin of Engineering Geology and the Environment,2021,80:317−344.
|
|
Yao Y G, Zhang Y C, Gao X L, et al. Study on permeability and collapsibility characteristics of sandy loess in northern Loess Plateau, China[J]. Journal of Hydrology,2021,603:126883.
|
|
Zhang F Y, Wang G H, Peng J B. Initiation and mobility of recurring loess flowslides on the Heifangtai irrigated terrace in China: Insights from hydrogeological conditions and liquefaction criteria[J]. Engineering Geology,2022,302:106619.
|
Supported by: Beijing Renhe Information Technology Co., Ltd. 
DownLoad: