Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model
Based on the principle of saturated infiltration and the Green-Ampt model, an unsaturated infiltration model for a soil slope surface was established for either constant moisture content, or depth-varying moisture content and the slope. Infiltration parameters in the partially saturated slope were r...
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| Veröffentlicht in: | Journal of mountain science 2020-10, Vol.17 (10), p.2577-2590 |
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| creator | Liu, Zi-zhen Yan, Zhi-xin Qiu, Zhan-hong Wang, Xiao-gang Li, Ji-wei |
| description | Based on the principle of saturated infiltration and the Green-Ampt model, an unsaturated infiltration model for a soil slope surface was established for either constant moisture content, or depth-varying moisture content and the slope. Infiltration parameters in the partially saturated slope were revealed under sustained rainfall. Through analysis of the variation of initial moisture content in the slope, the ponding time, infiltration depth, and infiltration rate were deduced for an unsaturated soil slope subject to rainfall infiltration. There is no ponded water on the surface of the slope under sustained low-intensity rainfall. The results show that the infiltration parameters of an unsaturated slope are influenced by the initial moisture content and the wetting front saturation, the soil cohesion and rainfall intensity under sustained rainfall. More short-term slope failures can occur with the decrease of cohesion of the soil of the slope. The ponding time and infiltration depth differ considering constant or different initial moisture content respectively in the soil slope. Then, best-fit curves of the infiltration rate, ponding time, and infiltration depth to the wetting front saturation were obtained with constant or different initial moisture contents. And the slope failure time is roughly uniform when subject to a rainfall intensity
I
>5 mm/h. |
| doi_str_mv | 10.1007/s11629-019-5744-9 |
| format | Article |
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I
>5 mm/h.</description><identifier>ISSN: 1672-6316</identifier><identifier>EISSN: 1993-0321</identifier><identifier>EISSN: 1008-2786</identifier><identifier>DOI: 10.1007/s11629-019-5744-9</identifier><language>eng</language><publisher>Heidelberg: Science Press</publisher><subject>Cohesion ; Depth ; Earth and Environmental Science ; Earth Sciences ; Ecology ; Environment ; Failure times ; Geography ; Green-Ampt model ; Infiltration rate ; Mathematical models ; Moisture content ; Parameters ; Ponding ; Rain ; Rainfall ; Rainfall infiltration ; Rainfall intensity ; Saturated soils ; Saturation ; Soil ; Soil moisture ; Soil stability ; Soils ; Stability analysis ; Unsaturated soils ; Water content ; Wetting ; Wetting front</subject><ispartof>Journal of mountain science, 2020-10, Vol.17 (10), p.2577-2590</ispartof><rights>Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2020</rights><rights>Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c316t-b5bd7a0d3ae517f7b700b9086d8e1e7ed8a2570e711bcaeb2259eed8d5bed4c43</citedby><cites>FETCH-LOGICAL-c316t-b5bd7a0d3ae517f7b700b9086d8e1e7ed8a2570e711bcaeb2259eed8d5bed4c43</cites><orcidid>0000-0003-4659-0600 ; 0000-0002-0986-4011 ; 0000-0002-5473-2165 ; 0000-0002-9897-9290 ; 0000-0002-1674-9361</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11629-019-5744-9$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11629-019-5744-9$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27923,27924,41487,42556,51318</link.rule.ids></links><search><creatorcontrib>Liu, Zi-zhen</creatorcontrib><creatorcontrib>Yan, Zhi-xin</creatorcontrib><creatorcontrib>Qiu, Zhan-hong</creatorcontrib><creatorcontrib>Wang, Xiao-gang</creatorcontrib><creatorcontrib>Li, Ji-wei</creatorcontrib><title>Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model</title><title>Journal of mountain science</title><addtitle>J. Mt. Sci</addtitle><description>Based on the principle of saturated infiltration and the Green-Ampt model, an unsaturated infiltration model for a soil slope surface was established for either constant moisture content, or depth-varying moisture content and the slope. Infiltration parameters in the partially saturated slope were revealed under sustained rainfall. Through analysis of the variation of initial moisture content in the slope, the ponding time, infiltration depth, and infiltration rate were deduced for an unsaturated soil slope subject to rainfall infiltration. There is no ponded water on the surface of the slope under sustained low-intensity rainfall. The results show that the infiltration parameters of an unsaturated slope are influenced by the initial moisture content and the wetting front saturation, the soil cohesion and rainfall intensity under sustained rainfall. More short-term slope failures can occur with the decrease of cohesion of the soil of the slope. The ponding time and infiltration depth differ considering constant or different initial moisture content respectively in the soil slope. Then, best-fit curves of the infiltration rate, ponding time, and infiltration depth to the wetting front saturation were obtained with constant or different initial moisture contents. And the slope failure time is roughly uniform when subject to a rainfall intensity
I
>5 mm/h.</description><subject>Cohesion</subject><subject>Depth</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Ecology</subject><subject>Environment</subject><subject>Failure times</subject><subject>Geography</subject><subject>Green-Ampt model</subject><subject>Infiltration rate</subject><subject>Mathematical models</subject><subject>Moisture content</subject><subject>Parameters</subject><subject>Ponding</subject><subject>Rain</subject><subject>Rainfall</subject><subject>Rainfall infiltration</subject><subject>Rainfall intensity</subject><subject>Saturated soils</subject><subject>Saturation</subject><subject>Soil</subject><subject>Soil moisture</subject><subject>Soil stability</subject><subject>Soils</subject><subject>Stability analysis</subject><subject>Unsaturated soils</subject><subject>Water content</subject><subject>Wetting</subject><subject>Wetting front</subject><issn>1672-6316</issn><issn>1993-0321</issn><issn>1008-2786</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp1kM1OAyEURonRxFp9AHckrlFgfhiWTaPVpIkLdU1guKM0dBiBLvr20oyJK1f3C_nODfcgdMvoPaNUPCTGWi4JZZI0oq6JPEMLJmVFaMXZecmt4KStWHuJrlLaUdoK2bEFCm9ZG-ddPmI9an9MLuEwlIwPY9L5EHUGi1NwHicfJsB9GJOzEN34iaN246C9x2U4n0vXhREbnQpSQv4CvIkAI1ntp4z3wYK_RheFSHDzO5fo4-nxff1Mtq-bl_VqS_ryx0xMY6zQ1FYaGiYGYQSlRtKutR0wEGA7zRtBQTBmeg2G80ZCebWNAVv3dbVEd_PeKYbvA6SsduEQy4VJ8bqhFaNc8tJic6uPIaUIg5qi2-t4VIyqk1c1e1XFqzp5VbIwfGbSdJIA8W_z_9APU_d9iQ</recordid><startdate>20201001</startdate><enddate>20201001</enddate><creator>Liu, Zi-zhen</creator><creator>Yan, Zhi-xin</creator><creator>Qiu, Zhan-hong</creator><creator>Wang, Xiao-gang</creator><creator>Li, Ji-wei</creator><general>Science Press</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0003-4659-0600</orcidid><orcidid>https://orcid.org/0000-0002-0986-4011</orcidid><orcidid>https://orcid.org/0000-0002-5473-2165</orcidid><orcidid>https://orcid.org/0000-0002-9897-9290</orcidid><orcidid>https://orcid.org/0000-0002-1674-9361</orcidid></search><sort><creationdate>20201001</creationdate><title>Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model</title><author>Liu, Zi-zhen ; Yan, Zhi-xin ; Qiu, Zhan-hong ; Wang, Xiao-gang ; Li, Ji-wei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-b5bd7a0d3ae517f7b700b9086d8e1e7ed8a2570e711bcaeb2259eed8d5bed4c43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Cohesion</topic><topic>Depth</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Ecology</topic><topic>Environment</topic><topic>Failure times</topic><topic>Geography</topic><topic>Green-Ampt model</topic><topic>Infiltration rate</topic><topic>Mathematical models</topic><topic>Moisture content</topic><topic>Parameters</topic><topic>Ponding</topic><topic>Rain</topic><topic>Rainfall</topic><topic>Rainfall infiltration</topic><topic>Rainfall intensity</topic><topic>Saturated soils</topic><topic>Saturation</topic><topic>Soil</topic><topic>Soil moisture</topic><topic>Soil stability</topic><topic>Soils</topic><topic>Stability analysis</topic><topic>Unsaturated soils</topic><topic>Water content</topic><topic>Wetting</topic><topic>Wetting front</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Zi-zhen</creatorcontrib><creatorcontrib>Yan, Zhi-xin</creatorcontrib><creatorcontrib>Qiu, Zhan-hong</creatorcontrib><creatorcontrib>Wang, Xiao-gang</creatorcontrib><creatorcontrib>Li, Ji-wei</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><jtitle>Journal of mountain science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Zi-zhen</au><au>Yan, Zhi-xin</au><au>Qiu, Zhan-hong</au><au>Wang, Xiao-gang</au><au>Li, Ji-wei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model</atitle><jtitle>Journal of mountain science</jtitle><stitle>J. Mt. Sci</stitle><date>2020-10-01</date><risdate>2020</risdate><volume>17</volume><issue>10</issue><spage>2577</spage><epage>2590</epage><pages>2577-2590</pages><issn>1672-6316</issn><eissn>1993-0321</eissn><eissn>1008-2786</eissn><abstract>Based on the principle of saturated infiltration and the Green-Ampt model, an unsaturated infiltration model for a soil slope surface was established for either constant moisture content, or depth-varying moisture content and the slope. Infiltration parameters in the partially saturated slope were revealed under sustained rainfall. Through analysis of the variation of initial moisture content in the slope, the ponding time, infiltration depth, and infiltration rate were deduced for an unsaturated soil slope subject to rainfall infiltration. There is no ponded water on the surface of the slope under sustained low-intensity rainfall. The results show that the infiltration parameters of an unsaturated slope are influenced by the initial moisture content and the wetting front saturation, the soil cohesion and rainfall intensity under sustained rainfall. More short-term slope failures can occur with the decrease of cohesion of the soil of the slope. The ponding time and infiltration depth differ considering constant or different initial moisture content respectively in the soil slope. Then, best-fit curves of the infiltration rate, ponding time, and infiltration depth to the wetting front saturation were obtained with constant or different initial moisture contents. And the slope failure time is roughly uniform when subject to a rainfall intensity
I
>5 mm/h.</abstract><cop>Heidelberg</cop><pub>Science Press</pub><doi>10.1007/s11629-019-5744-9</doi><tpages>14</tpages><orcidid>https://orcid.org/0000-0003-4659-0600</orcidid><orcidid>https://orcid.org/0000-0002-0986-4011</orcidid><orcidid>https://orcid.org/0000-0002-5473-2165</orcidid><orcidid>https://orcid.org/0000-0002-9897-9290</orcidid><orcidid>https://orcid.org/0000-0002-1674-9361</orcidid></addata></record> |
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| subjects | Cohesion Depth Earth and Environmental Science Earth Sciences Ecology Environment Failure times Geography Green-Ampt model Infiltration rate Mathematical models Moisture content Parameters Ponding Rain Rainfall Rainfall infiltration Rainfall intensity Saturated soils Saturation Soil Soil moisture Soil stability Soils Stability analysis Unsaturated soils Water content Wetting Wetting front |
| title | Stability analysis of an unsaturated soil slope considering rainfall infiltration based on the Green-Ampt model |
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