Influence of Rainfall Intensity and Its Pattern on the Stability of Unsaturated Soil Slope
Rainfall infiltration is an important factor that leads to slope instability. In this study, a numerical model for slope is built to investigate the effects of rainfall intensity and its pattern on slope stability. Results show that rainfall intensity and its pattern significantly influence slope st...
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| Veröffentlicht in: | Geotechnical and geological engineering 2019-04, Vol.37 (2), p.615-623 |
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| creator | Lin, Hang Zhong, Wenwen |
| description | Rainfall infiltration is an important factor that leads to slope instability. In this study, a numerical model for slope is built to investigate the effects of rainfall intensity and its pattern on slope stability. Results show that rainfall intensity and its pattern significantly influence slope stability due the following instances: (1) the safety factor of slope initially decreases and then stabilizes during rainfall, which is defined as the effective rainfall days; moreover, when the rainfall intensity is less than the saturated permeability coefficient of soil, the effective rainfall days decreases with the increase of rainfall intensity. (2) Under the same rainfall intensity, the ultimate safety factor of sand slope when the effective rainfall days is reached is greater than that of the clay slope. (3) When the rainfall intensity is less than the saturated permeability coefficient of soil with the same total precipitation, a longer rainfall duration indicates a larger slope safety factor; conversely, when the rainfall intensity is greater than the saturated permeability coefficient of soil, a longer rainfall duration indicates a smaller slope safety factor. |
| doi_str_mv | 10.1007/s10706-018-0631-7 |
| format | Article |
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In this study, a numerical model for slope is built to investigate the effects of rainfall intensity and its pattern on slope stability. Results show that rainfall intensity and its pattern significantly influence slope stability due the following instances: (1) the safety factor of slope initially decreases and then stabilizes during rainfall, which is defined as the effective rainfall days; moreover, when the rainfall intensity is less than the saturated permeability coefficient of soil, the effective rainfall days decreases with the increase of rainfall intensity. (2) Under the same rainfall intensity, the ultimate safety factor of sand slope when the effective rainfall days is reached is greater than that of the clay slope. (3) When the rainfall intensity is less than the saturated permeability coefficient of soil with the same total precipitation, a longer rainfall duration indicates a larger slope safety factor; conversely, when the rainfall intensity is greater than the saturated permeability coefficient of soil, a longer rainfall duration indicates a smaller slope safety factor.</description><identifier>ISSN: 0960-3182</identifier><identifier>EISSN: 1573-1529</identifier><identifier>DOI: 10.1007/s10706-018-0631-7</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Civil Engineering ; Clay ; Coefficients ; Duration ; Earth and Environmental Science ; Earth Sciences ; Geotechnical Engineering & Applied Earth Sciences ; Hydrogeology ; Infiltration ; Instability ; Mathematical models ; NGOs ; Nongovernmental organizations ; Original Paper ; Permeability ; Permeability coefficient ; Rain ; Rainfall ; Rainfall infiltration ; Rainfall intensity ; Safety ; Safety factors ; Slope stability ; Soil ; Soil permeability ; Soil stability ; Terrestrial Pollution ; Unsaturated soils ; Waste Management/Waste Technology</subject><ispartof>Geotechnical and geological engineering, 2019-04, Vol.37 (2), p.615-623</ispartof><rights>Springer Nature Switzerland AG 2018</rights><rights>Copyright Springer Nature B.V. 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a339t-1a945e13d58796c564cb3c1cd8821e5b7d2699385f3840726d296247eaec330e3</citedby><cites>FETCH-LOGICAL-a339t-1a945e13d58796c564cb3c1cd8821e5b7d2699385f3840726d296247eaec330e3</cites><orcidid>0000-0002-5924-5163</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/s10706-018-0631-7$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10706-018-0631-7$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>315,781,785,27928,27929,41492,42561,51323</link.rule.ids></links><search><creatorcontrib>Lin, Hang</creatorcontrib><creatorcontrib>Zhong, Wenwen</creatorcontrib><title>Influence of Rainfall Intensity and Its Pattern on the Stability of Unsaturated Soil Slope</title><title>Geotechnical and geological engineering</title><addtitle>Geotech Geol Eng</addtitle><description>Rainfall infiltration is an important factor that leads to slope instability. In this study, a numerical model for slope is built to investigate the effects of rainfall intensity and its pattern on slope stability. Results show that rainfall intensity and its pattern significantly influence slope stability due the following instances: (1) the safety factor of slope initially decreases and then stabilizes during rainfall, which is defined as the effective rainfall days; moreover, when the rainfall intensity is less than the saturated permeability coefficient of soil, the effective rainfall days decreases with the increase of rainfall intensity. (2) Under the same rainfall intensity, the ultimate safety factor of sand slope when the effective rainfall days is reached is greater than that of the clay slope. (3) When the rainfall intensity is less than the saturated permeability coefficient of soil with the same total precipitation, a longer rainfall duration indicates a larger slope safety factor; conversely, when the rainfall intensity is greater than the saturated permeability coefficient of soil, a longer rainfall duration indicates a smaller slope safety factor.</description><subject>Civil Engineering</subject><subject>Clay</subject><subject>Coefficients</subject><subject>Duration</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Geotechnical Engineering & Applied Earth Sciences</subject><subject>Hydrogeology</subject><subject>Infiltration</subject><subject>Instability</subject><subject>Mathematical models</subject><subject>NGOs</subject><subject>Nongovernmental organizations</subject><subject>Original Paper</subject><subject>Permeability</subject><subject>Permeability coefficient</subject><subject>Rain</subject><subject>Rainfall</subject><subject>Rainfall infiltration</subject><subject>Rainfall intensity</subject><subject>Safety</subject><subject>Safety factors</subject><subject>Slope stability</subject><subject>Soil</subject><subject>Soil permeability</subject><subject>Soil stability</subject><subject>Terrestrial Pollution</subject><subject>Unsaturated soils</subject><subject>Waste Management/Waste Technology</subject><issn>0960-3182</issn><issn>1573-1529</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp1kL1OwzAURi0EEqXwAGyWmA332ontjKjiJ1IlEKULi-UmDqQKTrGdgbfHVZGYmLyc8135EHKJcI0A6iYiKJAMUDOQApk6IjMslWBY8uqYzKCSwARqfkrOYtwCAJeAM_JW-26YnG8cHTv6Ynvf2WGgtU_Oxz59U-tbWqdIn21KLng6epo-HF0lu-mHPZC1tY82TcEm19LV2A90NYw7d05O8lZ0F7_vnKzv714Xj2z59FAvbpfMClElhrYqSoeiLbWqZFPKotmIBptWa46u3KiWy6oSuuyELkBx2fJK8kI56xohwIk5uTrs7sL4NbmYzHacgs8nDUet8qe15JnCA9WEMcbgOrML_acN3wbB7BOaQ0KTE5p9QqOyww9OzKx_d-Fv-X_pB9kacog</recordid><startdate>20190401</startdate><enddate>20190401</enddate><creator>Lin, Hang</creator><creator>Zhong, Wenwen</creator><general>Springer International Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><orcidid>https://orcid.org/0000-0002-5924-5163</orcidid></search><sort><creationdate>20190401</creationdate><title>Influence of Rainfall Intensity and Its Pattern on the Stability of Unsaturated Soil Slope</title><author>Lin, Hang ; Zhong, Wenwen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a339t-1a945e13d58796c564cb3c1cd8821e5b7d2699385f3840726d296247eaec330e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Civil Engineering</topic><topic>Clay</topic><topic>Coefficients</topic><topic>Duration</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Geotechnical Engineering & Applied Earth Sciences</topic><topic>Hydrogeology</topic><topic>Infiltration</topic><topic>Instability</topic><topic>Mathematical models</topic><topic>NGOs</topic><topic>Nongovernmental organizations</topic><topic>Original Paper</topic><topic>Permeability</topic><topic>Permeability coefficient</topic><topic>Rain</topic><topic>Rainfall</topic><topic>Rainfall infiltration</topic><topic>Rainfall intensity</topic><topic>Safety</topic><topic>Safety factors</topic><topic>Slope stability</topic><topic>Soil</topic><topic>Soil permeability</topic><topic>Soil stability</topic><topic>Terrestrial Pollution</topic><topic>Unsaturated soils</topic><topic>Waste Management/Waste Technology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lin, Hang</creatorcontrib><creatorcontrib>Zhong, Wenwen</creatorcontrib><collection>CrossRef</collection><collection>Oceanic 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><jtitle>Geotechnical and geological engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lin, Hang</au><au>Zhong, Wenwen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of Rainfall Intensity and Its Pattern on the Stability of Unsaturated Soil Slope</atitle><jtitle>Geotechnical and geological engineering</jtitle><stitle>Geotech Geol Eng</stitle><date>2019-04-01</date><risdate>2019</risdate><volume>37</volume><issue>2</issue><spage>615</spage><epage>623</epage><pages>615-623</pages><issn>0960-3182</issn><eissn>1573-1529</eissn><abstract>Rainfall infiltration is an important factor that leads to slope instability. In this study, a numerical model for slope is built to investigate the effects of rainfall intensity and its pattern on slope stability. Results show that rainfall intensity and its pattern significantly influence slope stability due the following instances: (1) the safety factor of slope initially decreases and then stabilizes during rainfall, which is defined as the effective rainfall days; moreover, when the rainfall intensity is less than the saturated permeability coefficient of soil, the effective rainfall days decreases with the increase of rainfall intensity. (2) Under the same rainfall intensity, the ultimate safety factor of sand slope when the effective rainfall days is reached is greater than that of the clay slope. (3) When the rainfall intensity is less than the saturated permeability coefficient of soil with the same total precipitation, a longer rainfall duration indicates a larger slope safety factor; conversely, when the rainfall intensity is greater than the saturated permeability coefficient of soil, a longer rainfall duration indicates a smaller slope safety factor.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s10706-018-0631-7</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-5924-5163</orcidid></addata></record> |
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| source | SpringerNature Journals |
| subjects | Civil Engineering Clay Coefficients Duration Earth and Environmental Science Earth Sciences Geotechnical Engineering & Applied Earth Sciences Hydrogeology Infiltration Instability Mathematical models NGOs Nongovernmental organizations Original Paper Permeability Permeability coefficient Rain Rainfall Rainfall infiltration Rainfall intensity Safety Safety factors Slope stability Soil Soil permeability Soil stability Terrestrial Pollution Unsaturated soils Waste Management/Waste Technology |
| title | Influence of Rainfall Intensity and Its Pattern on the Stability of Unsaturated Soil Slope |
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