An Analysis of Vertical Infiltration Responses in Unsaturated Soil Columns

An Analysis of Vertical Infiltration Responses in Unsaturated Soil Columns | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article An Analysis of Vertical Infiltration Responses in Unsaturated Soil Columns Lincui Li, Cheng Li, Xi-An Li, Yonghong Li, Yong Li, Yiping He, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4943413/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Rainfall infiltration affects slope stability by changing the pore water pressure in soil. In this study, indoor vertical infiltration tests were performed on silt columns. The instantaneous profile method and filter paper method were used to obtain the soil water characteristic curve (SWCC) and hydraulic conductivity function(HCF). During the rainfall infiltration test, the vertical patters of volumetric moisture contents, total hydraulic head or suction and the wetting front were recorded. Advancing displacement and rate of the wetting front, the cumulative infiltration, the instantaneous infiltration rate, the average infiltration rate were determined to assess rainfall infiltration process comprehensively, combining with SWCC and HCF. Additionally, the effects of dry density and runoff on the one-dimensional (1D) vertical infiltration process of soil columns were evaluated. The results showed that the variation curve of the wetting front displacement versus time obeys a power function relationship, the infiltration rate–time relationship curve and the unsaturated permeability curve could be roughly divided into three stages, and the SWCC and HCF calculated by volumetric moisture content are more sensitive to changes in dry density than to changes in runoff or hydraulic head height. Physical sciences/Engineering/Civil engineering Earth and environmental sciences/Hydrology Horizontal infiltration Soil–water characteristic curve Soil moisture profile Hydraulic conductivity Pore water pressure Rainfall Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4943413","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":356899389,"identity":"1db7f13d-3f48-4b52-a0d4-b17bf699fd43","order_by":0,"name":"Lincui 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In this study, indoor vertical infiltration tests were performed on silt columns. The instantaneous profile method and filter paper method were used to obtain the soil water characteristic curve (SWCC) and hydraulic conductivity function(HCF). During the rainfall infiltration test, the vertical patters of volumetric moisture contents, total hydraulic head or suction and the wetting front were recorded. Advancing displacement and rate of the wetting front, the cumulative infiltration, the instantaneous infiltration rate, the average infiltration rate were determined to assess rainfall infiltration process comprehensively, combining with SWCC and HCF. Additionally, the effects of dry density and runoff on the one-dimensional (1D) vertical infiltration process of soil columns were evaluated. 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