DISCUSSION ON PREFERENTIAL FLOW AND PISTON FLOW IN THICK LOESS VADOSE ZONE

LI Tonglu; WANG Ying; HU Xiangyang; LI Ping; WANG Yu

doi:10.13544/j.cnki.jeg.2022-0511

2022 Vol. 30, No. 6

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Article navigation > Journal of Engineering Geology > 2022 > 30(6): 1842-1848

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LI Tonglu, WANG Ying, HU Xiangyang, LI Ping, WANG Yu. 2022. DISCUSSION ON PREFERENTIAL FLOW AND PISTON FLOW IN THICK LOESS VADOSE ZONE[J]. Journal of Engineering Geology, 30(6): 1842-1848. doi: 10.13544/j.cnki.jeg.2022-0511

Citation:

LI Tonglu, WANG Ying, HU Xiangyang, LI Ping, WANG Yu. 2022. DISCUSSION ON PREFERENTIAL FLOW AND PISTON FLOW IN THICK LOESS VADOSE ZONE[J]. Journal of Engineering Geology, 30(6): 1842-1848. doi: 10.13544/j.cnki.jeg.2022-0511

DISCUSSION ON PREFERENTIAL FLOW AND PISTON FLOW IN THICK LOESS VADOSE ZONE

LI Tonglu^{①,②, ,},
WANG Ying^①,②,
HU Xiangyang^③,
LI Ping^①,②,
WANG Yu^①,②

①
School of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, China
②
Observation and Research Station of Water Cycle and Geological Environment for the Chinese Loess Plateau, Zhengning 745300, China
③
Power China Northwest Engineering Corporation Limited, Xi'an 710065, China
Fund Project:
国家重点研发计划项目(资助号：2021YFE0111900)，国家自然科学基金项目(资助号：42041006)

More Information

Corresponding author: LI Tonglu, E-mail: dcdgx08@chd.edu.cn

Received Date: 11 July 2022

Revised Date: 25 October 2022

Publish Date: 25 December 2022

Abstract

Abstract

The mode of water migration in thick loess vadose zone has always been argued on preferential flow and piston flow. In this paper,the authors conducted in-situ observations and two model tests to demonstrate that piston flow is the unique way of water migration in vadose zone in thick loess. Based on flow behavior of unsaturated soil,it is also verified that preferential flow can only exist in saturated soils. Loess in natural condition mainly exists as unsaturated state,so piston flow is the dominant flow mode in loess. Preferential flow just occurs in shallow saturated zone locally and in the raining periods temporally. In addition,preferential paths in loess,such as vertical joints,load release cracks,animal caves and root pores are the channels for surface water discharge rather than those for groundwater recharge.
- Loess /
- Vadose zone /
- Groundwater /
- Preferential flow /
- Piston flow

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References

	Bian S Q, Yang Y P, Ma J H, et al. 2020. Two-dimensional imaging study of internal moisture in loess slope: A case study of the Luojiapo Landslide in Heifangtai terrace[J]. Journal of Engineering Geology, 28 (4): 840-851. Google Scholar
	Hong B, Li X A, Wang L, et al. 2018. Discussion on applicability of capillary seepage models to loess permeability[J]. Journal of Engineering Geology, 26 (5): 1250-1256. Google Scholar
	Hou X K, Vanapalli S K, Li T L. 2020. Water flow in unsaturated soils subjected to multiple infiltration events[J]. Canadian Geotechnical Journal, 57 (3): 366-376. doi: 10.1139/cgj-2018-0566 CrossRef Google Scholar
	Li P, Li T L, Fu Y K, et al. 2014. In-situ observation on regularities of rainfall infiltration in loess[J]. Journal of Central South University(Science and Technology), 45 (10): 3551-3560. Google Scholar
	Li P, Li T L, Wang A D, et al. 2013. In-situ test research on regularities of water migration in loess[J]. Rock and Soil Mechanics, 34 (5): 1331-1339. Google Scholar
	Li Q, Li T L, Qiao Z T, et al. 2021. Microscopic discontinuity deformation analysis of capillary in unsaturated soil[J]. Journal of Engineering Geology, 29 (3): 834-842. Google Scholar
	Li T L, Xi Y, Hou X K. 2018. Mechanism of surface water infiltration induced deep loess landslide[J]. Journal of Engineering Geology, 26 (5): 1113-1120. Google Scholar
	Li X, Lu Y D, Fan W, et al. 2019. Current status and prospects of research on mechanism of preferential flow-induced sliding in loess slope[J]. Bulletin of Soil and Water Conservation, 39 (1): 294-301, 324. Google Scholar
	Li Y F. 1991. Relationship between the permeability and the porosity of Luochuan loess layers[J]. Journal of Xi'an College of Geology, 13 (2): 60-64. Google Scholar
	Liu H S, Ni W K, Yang H Q, et al. 2008. Site test on infiltration of loess subgrade under rainfall circumstance[J]. Journal of Earth Sciences and Environment, 30 (1): 60-63. Google Scholar
	Lu N, Likos W J. 2006. Suction stress characteristic curve for unsaturated soil[J]. Journal of Geotechnical and Geoenvironmental Engineering, 132 (2): 131-142. doi: 10.1061/(ASCE)1090-0241(2006)132:2(131) CrossRef Google Scholar
	Lu Q Z, Peng J B, Chen Z X, et al. 2005. Research on characteristics of cracks and fissures of loess and their distribution in Loess Plateau of China[J]. Journal of Soil and Water Conservation, 19 (5): 191-194. doi: 10.3321/j.issn:1009-2242.2005.05.048 CrossRef Google Scholar
	Lu Q Z, Peng J B. 2006. Characteristics of structural planes of loess mass in Loess Plateau of China and its hazard effect[J]. Journal of Xi'an University of Science and Technology, 23 (4): 446-450. doi: 10.3969/j.issn.1672-9315.2006.04.003 CrossRef Google Scholar
	Luo Y, Wang T H, Wang J J. 2014. Finite element seepage flow model for unsaturated loess with joints[J]. Journal of Engineering Geology, 22 (6): 1115-1122. Google Scholar
	Richards L A. 1931. Capillary conduction of liquids through porous mediums[J]. Physics, 1 : 318-333. doi: 10.1063/1.1745010 CrossRef Google Scholar
	Shi D H, Jia Y R, Zuo X F. 1983. On the occurrence and migration of water in the vadose zone of Luochuan Loess Plateau[J]. Hydrogeology and Engineering Geology, (3): 10-17. Google Scholar
	Tu X B, Kwong A K L, Dai F C, et al. 2009. Field monitoring of rainfall infiltration in a loess slope and analysis of failure mechanism of rainfall-induced landslides[J]. Engineering Geology, 105(1-2): 134-150. doi: 10.1016/j.enggeo.2008.11.011 CrossRef Google Scholar
	Vanapalli S K, Fredlund D G, Pufahl D E, et al. 1996. Model for the prediction of shear strength with respect to soil suction[J]. Canadian Geotechnical Journal, 33 (1): 379-392. Google Scholar
	Wang D Q. 1982. Characteristics of water recharge to groundwater in Luochuan Loess[J]. Hydrogeology and Engineering Geology, (5): 5-12. Google Scholar
	Xu L, Dai F C, Tham L G, et al. 2011. Field testing of irrigation effects on the stability of a cliff edge in loess, North-west China[J]. Engineering Geology, 120(1-4): 10-17. doi: 10.1016/j.enggeo.2011.03.007 CrossRef Google Scholar
	Xu L, Dai F C, Kwong A K L, et al. 2009. Characteristics and forming mechanisms of the plateau-edge cracks and their significance to loess landslides[J]. Geological Review, 55 (1): 85-90. doi: 10.3321/j.issn:0371-5736.2009.01.010 CrossRef Google Scholar
	Xu Z Y, Zhao Y J, Chen J J. 1993. Research of fractural efficacy on mechanisms governing water flow in unsaturated loess[J]. Journal of Changchun University of Earth Science, (3): 326-329. Google Scholar
	Yang Y J, Deng L S, Fan W, et al. 2021. Development characteristics and effects of structural surfaces of loess slopes in Southern Jing-yang Loess Plateau[J/OL]. Journal of Engineering Geology, 2021-05-10, https://doi.org/10.13544/j.cnki.jeg.2020-547. Google Scholar
	Zhang C L, Li T L, Li P. 2014. Rainfall infiltration in Chinese Loess by in situ observation[J]. Journal of Hydrologic Engineering, 19(9): 06014002. doi: 10.1061/(ASCE)HE.1943-5584.0001015 CrossRef Google Scholar
	Zhang C L, Li P, Li T L, et al. 2014. In-situ observation on rainfall infiltration in loess[J]. Journal of Hydraulic Engineering, 45 (6): 728-734. Google Scholar
	Zhang J, Li P, Li T L, et al. 2021. Discontinuous deformation simulation of loess sedimentation process and microstructure model[J]. Journal of Engineering Geology, 29 (4): 1199-1206. Google Scholar
	Zhang Y G, Li T L, Shen W, et al. 2019. Hydraulic model of transition of transient to steady flows in the vadose zone[J]. Journal of Hydrologic Engineering, 24(12): 04019052. doi: 10.1061/(ASCE)HE.1943-5584.0001843 CrossRef Google Scholar
	Zhao K Y, Xu Q, Liu F Z, et al. 2020. Seepage characteristics of preferential flow in loess[J]. Chinese Journal of Geotechnical Engineering, 42 (5): 941-950. Google Scholar
	Zhao Y J, Xu Z Y. 1994. Mechanisms of water guided by vertical fractures in loess vadose zone[J]. Radiation Protection Bulletin, 14 (4): 85-87. Google Scholar
	边世强, 杨云鹏, 马建花, 等. 2020. 黄土斜坡内部水分二维成像研究——以黑方台罗家坡滑坡为例[J]. 工程地质学报, 28 (4): 840-851. Google Scholar
	洪勃, 李喜安, 王力, 等. 2018. 毛细管渗流模型在黄土渗透性中的应用探讨[J]. 工程地质学报, 26 (5): 1250-1256. Google Scholar
	李萍, 李同录, 付昱凯, 等. 2014. 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), 45 (10): 3551-3560. Google Scholar
	李萍, 李同录, 王阿丹, 等. 2013. 黄土中水分迁移规律现场试验研究[J]. 岩土力学, 34 (5): 1331-1339. Google Scholar
	李强, 李同录, 乔志甜, 等. 2021. 非饱和土粒间毛细作用的微观不连续变形分析[J]. 工程地质学报, 29 (3): 834-842. Google Scholar
	李同录, 习羽, 侯晓坤. 2018. 水致黄土深层滑坡灾变机理[J]. 工程地质学报, 26 (5): 1113-1120. Google Scholar
	李鑫, 卢玉东, 范文, 等. 2019. 黄土斜坡优先流促滑机理研究现状及展望[J]. 水土保持通报, 39 (1): 294-301, 324. Google Scholar
	李云峰. 1991. 洛川黄土地层渗透性与孔隙性的关系[J]. 西安地质学院学报, 13 (2): 60-64. Google Scholar
	刘海松, 倪万魁, 杨泓全, 等. 2008. 黄土路基降雨入渗现场试验[J]. 地球科学与环境学报, 30 (1): 60-63. Google Scholar
	卢全中, 彭建兵, 陈志新, 等. 2005. 黄土高原地区黄土裂隙发育特征及其规律研究[J]. 水土保持学报, 19 (5): 191-194. Google Scholar
	卢全中, 彭建兵. 2006. 黄土体结构面的发育特征及其灾害效应[J]. 西安科技大学学报, 26 (4): 446-450. Google Scholar
	罗扬, 王铁行, 王娟娟. 2014. 含节理黄土渗流数值模型研究[J]. 工程地质学报, 22 (6): 1115-1122. Google Scholar
	施德鸿, 贾永瑞, 左秀法. 1983. 试论洛川黄土塬区包气带水分的赋存与运移[J]. 水文地质工程地质, (3): 10-17. Google Scholar
	王德潜. 1982. 洛川黄土潜水补给特征[J]. 水文地质工程地质, (5): 5-12. Google Scholar
	许领, 戴福初, 邝国麟, 等. 2009. 台缘裂缝发育特征、成因机制及其对黄土滑坡的意义[J]. 地质论评, 55 (1): 85-90. Google Scholar
	许兆义, 赵英杰, 陈家军. 1993. 包气带水流中黄土裂隙作用机制研究[J]. 长春地质学院学报, 23 (3): 326-329. Google Scholar
	杨亚军, 邓龙胜, 范文, 等. 2021. 泾阳南塬黄土斜坡结构面发育特征及其影响效应[J]. 工程地质学报, 2021-05-10, https://doi.org/10.13544/j.cnki.jeg.2020-547. Google Scholar
	张常亮, 李萍, 李同录, 等. 2014. 黄土中降雨入渗规律的现场监测研究[J]. 水利学报, 45 (6): 728-734. Google Scholar
	张杰, 李萍, 李同录, 等. 2021. 黄土沉积过程及微结构模型的非连续变形分析[J]. 工程地质学报, 29 (4): 1199-1206. Google Scholar
	赵宽耀, 许强, 刘方洲, 等. 2020. 黄土中优势通道渗流特征研究[J]. 岩土工程学报, 42 (5): 941-950. Google Scholar
	赵英杰, 许兆义. 1994. 黄土包气带中垂直裂隙导水机制研究[J]. 辐射防护通讯, 14 (4): 85-87. Google Scholar

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