基于原位监测的浅层黄土斜坡水分运移规律分析

doi:10.13686/j.cnki.dzyzy.2021.04.012

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Abstract Rainfall-induced shallow loess landslide is one of the major geohazards in Loess Plateau. The spatial distribution and variation trend of moisture in slope are important factors leading to slope instability, but there are few section monitoring data based on the above factors. Relying on the loess geological hazards field observation base in Yan'an City, the study selects a typical loess slope to lay out two 5-meter-deep vertical sections for moisture detection, and observes the spatial characteristics of slope moisture during rainfall. The monitoring results indicate that the variation of rainfall-induced soil moisture content is limited to depth and positively correlated with rainfall; The soil moisture content shows periodicity with time and the period gradually lengthens with increasing depth; The slope moisture shows obvious anisotropy in spatial distribution, uneven and periodic vertically, while the water content in slope top, midslope and slope toe generally show a decreasing trend under the influence of rainfall, among which the water content fluctuates the most at the top and foot of slope, with the largest infiltration depth at the slope toe.

Key words： loess landslide rainfall infiltration depth water content anisotropy

Received: 28 December 2020

PACS:

P642

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	Articles by authors
	ZHAO Li-yun
	ZHANG Mao-sheng
	SUN Ping-ping
	CHENG Xiu-juan
	LIU Chao-nan

Cite this article:

ZHAO Li-yun,ZHANG Mao-sheng,SUN Ping-ping等. ANALYSIS OF WATER MOVEMENT LAW IN SHALLOW LOESS SLOPE BASED ON IN-SITU MONITORING[J]. GEOLOGY AND RESOURCES, 2021, 30(4): 492-498.

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http://manu25.magtech.com.cn/Jweb_dzyzy/EN/10.13686/j.cnki.dzyzy.2021.04.012 OR http://manu25.magtech.com.cn/Jweb_dzyzy/EN/Y2021/V30/I4/492

[1]	张茂省, 胡炜, 孙萍萍, 等. 黄土水敏性及水致黄土滑坡研究现状与展望[J]. 地球环境学报, 2016, 7(4):323-334. Zhang M S, Hu W, Sun P P, et al. Advances and prospects of water sensitivity of loess and the induced loess landslides[J]. Journal of Earth Environment, 2016, 7(4):323-334.
[2]	黄玉华, 武文英, 冯卫, 等. 陕北延安"7.3暴雨"诱发地质灾害主要类型与特征[J]. 西北地质, 2014, 47(3):140-146. Huang Y H, Wu W Y, Feng W, et al. Main types and characteristics of the geo-hazards triggered by heavy rain on July 3 in Yan'an, Shaanxi[J]. Northwestern Geology, 2014, 47(3):140-146.
[3]	李萍, 李同录, 付昱凯, 等. 非饱和黄土中降雨入渗规律的现场监测研究[J]. 中南大学学报(自然科学版), 2014, 45(10):3551-3560. Li P, Li T L, Fu Y K, et al. In-situ observation on regularities of rainfall infiltration in loess[J]. Journal of Central South University (Science and Technology), 2014, 45(10):3551-3560.
[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(1/2):134-150.
[5]	同霄, 彭建兵, 朱兴华, 等. 黄土地区降雨的优势入渗深度[J]. 水土保持通报, 2017, 37(3):231-236. Tong X, Peng J B, Zhu X H, et al. Advantage infiltration depth of rainfall in Loess Area[J]. Bulletin of Soil and Water Conservation, 2017, 37(3):231-236.
[6]	王刚, 孙萍, 吴礼舟, 等. 降雨诱发浅表层黄土滑坡机理实验研究[J]. 工程地质学报, 2017, 25(5):1252-1263. Wang G, Sun P, Wu L Z, et al. Experimental study on mechanism of shallow loess landslides induced by rainfall[J]. Journal of Engineering Geology, 2017, 25(5):1252-1263.
[7]	杨仲康, 陈冠, 孟兴民, 等. 基于现场渗透试验的黄土滑坡体入渗特性[J]. 兰州大学学报(自然科学版), 2017, 53(3):285-291. Yang Z K, Chen G, Meng X M, et al. Infiltration characteristics of loess landslide based on a infiltration test in the field[J]. Journal of Lanzhou University (Natural Sciences), 2017, 53(3):285-291.
[8]	潘俊义, 侯大勇, 李荣建, 等. 不同雨强下黄土边坡降雨入渗测试与分析[J]. 工程地质学报, 2018, 26(5):1170-1177. Pan J Y, Hou D Y, Li R J, et al. Rainfall infiltration test and analysis of loess slope under different rainfall intensities[J]. Journal of Engineering Geology, 2018, 26(5):1170-1177.
[9]	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 H Z, Yu Y Z, Li G X, et al. Influence of rainfall characteristics on soil slope failure[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(1):198-204.
[10]	Zhang C L, Zhang Y G, Li T L, et al. In-situ observation research on the regularities of water migration in loess[C]//Proceedings of 2011 International Symposium on Water Resource and Environmental Protection. Xi'an:IEEE, 2011:2745-2748.
[11]	王刘华. 延安地区典型滑坡的形成机理研究[D]. 西安:长安大学, 2014. Wang L H. The research on the formation mechanism of the typical landslide in Yan'an area[D]. Xi'an:Chang'an University, 2014.
[12]	王晨兴. 降雨入渗及其对斜坡稳定性的影响——以延安宝塔区皮家沟斜坡为例[D]. 西安:西北大学, 2019. Wang C X. Rainfall infiltration and its impact on slope stability:A case study of Pijiagou slope in Baota district, Yan'an[D]. Xi'an:Northwest University, 2019.
[13]	张树轩, 杨为民, 程小杰, 等. 甘肃天水红旗山黄土滑坡群成因及稳定性分析[J]. 中国地质, 2017, 44(5):924-937. Zhang S X, Yang W M, Cheng X J, et al. Genetic mechanism and stability analysis of loess landslides group in Tianshui Hongqishan, Gansu Province[J]. Geology in China, 2017, 44(5):924-937.
[14]	孙萍萍, 张茂省, 冯立, 等. 黄土水敏性及其时空分布规律[J]. 西北地质, 2019, 52(2):117-124. Sun P P, Zhang M S, Feng L, et al. Water sensitivity of loess and its spatial-temporal distribution on the Loess Plateau[J]. Northwestern Geology, 2019, 52(2):117-124.
[15]	段天柱. 沁水盆地黄土塬区三维地震勘探激发层位试验研究[J]. 地质与资源, 2019, 28(3):309-314. Duan T Z. Experimental study on the excitation horizon of 3D seismic exploration in the loess table area of Qinshui basin[J]. Geology and Resources, 2019, 28(3):309-314.
[16]	张永双, 巴仁基, 任三绍, 等. 中国西藏金沙江白格滑坡的地质成因分析[J]. 中国地质, 2020, 47(6):1637-1645. Zhang Y S, Ba R J, Ren S S, et al. An analysis of geo-mechanism of the Baige landslide in Jinsha River, Tibet[J]. Geology in China, 2020, 47(6):1637-1645.
[17]	石兰君, 乔晓英, 曾磊, 等. 甘肃黑方台黄土水分运移规律模拟[J]. 干旱区研究, 2018, 35(4):813-820. Shi L J, Qiao X Y, Zeng L, et al. Loess moisture migration in Heifangtai of Gansu Province[J]. Arid Zone Research, 2018, 35(4):813-820.
[18]	高策. 强降水条件下延安地区典型黄土斜坡水分运移规律研究[D]. 西安:长安大学, 2018. Gao C. Study on water movement law in typical loess slope under heavy precipitation in Yan'an Area[D]. Xi'an:Chang'an University, 2018.
[19]	薛强, 张茂省, 高波. 斜坡单元支持下基于土体含水率的陕西省清涧县城区黄土滑坡危险性评价[J]. 中国地质, 2020, 47(6):1904-1914. Xue Q, Zhang M S, Gao B. Hazard assessment of loess landslide based on soil moisture content and supported by slope unit in Qingjian City, Shaanxi Province[J]. Geology in China, 2020, 47(6):1904-1914.
[20]	李明波, 陈平, 陈植华, 等. 湖南雪峰山地区降雨型滑坡灾害敏感性区划[J]. 地质与资源, 2019, 28(1):78-84. Li M B, Chen P, Chen Z H, et al. Sensitivity zoning of rainfall-induced landslide hazard in Xuefeng Mountain area[J]. Geology and Resources, 2019, 28(1):78-84.