Study on Seepage Characteristics and Stability of Core Dam Under the Combined Action of the Variation of Reservoir Water Level and Rainfall
To study the influence of the variation of reservoir water level and rainfall on the seepage characteristics and stability of the core dam, considering the coupling effect of seepage field and stress field, finite element simulation of seepage and stability of dam slope when the core dam encounters...
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| Veröffentlicht in: | Geotechnical and geological engineering 2021, Vol.39 (1), p.193-211 |
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| creator | Su, Zhengyang Chen, Guangyu Meng, Ying |
| description | To study the influence of the variation of reservoir water level and rainfall on the seepage characteristics and stability of the core dam, considering the coupling effect of seepage field and stress field, finite element simulation of seepage and stability of dam slope when the core dam encounters the variation of reservoir water level and rainfall was carried out based on the unsaturated seepage principle, different rainfall intensities, different rainfall types and different variation rates of reservoir water level were selected for finite element simulation. The results show that: The variation rate of water level mainly affects the time when pore water pressure tends to be stable. The rainfall intensity and rainfall type mainly affect the pore water pressure in the upper part of the dam, and the higher the rainfall intensity, the more drastically the pore water pressure changes in the upper area of the core dam. Rainfall type and rainfall intensity are the main factors that affect the safety factor of the downstream slope of the core wall dam, but have little effect on the safety factor of the upstream slope. When the safety factor of the downstream dam slope tends to be stable, the order of the safety factor of different rainfall type is: forward type > = center type > average type > post-peak type. Whether the water level rises or falls, rainfall will reduce the safety factor of downstream dam slope. The results of this study provide a reference for correctly understanding the seepage and stability law of the slope of core dam and a reference for risk analysis and emergency management when the core dam encounters extreme working conditions. |
| doi_str_mv | 10.1007/s10706-020-01486-0 |
| format | Article |
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The results show that: The variation rate of water level mainly affects the time when pore water pressure tends to be stable. The rainfall intensity and rainfall type mainly affect the pore water pressure in the upper part of the dam, and the higher the rainfall intensity, the more drastically the pore water pressure changes in the upper area of the core dam. Rainfall type and rainfall intensity are the main factors that affect the safety factor of the downstream slope of the core wall dam, but have little effect on the safety factor of the upstream slope. When the safety factor of the downstream dam slope tends to be stable, the order of the safety factor of different rainfall type is: forward type > = center type > average type > post-peak type. Whether the water level rises or falls, rainfall will reduce the safety factor of downstream dam slope. The results of this study provide a reference for correctly understanding the seepage and stability law of the slope of core dam and a reference for risk analysis and emergency management when the core dam encounters extreme working conditions.</description><identifier>ISSN: 0960-3182</identifier><identifier>EISSN: 1573-1529</identifier><identifier>DOI: 10.1007/s10706-020-01486-0</identifier><language>eng</language><publisher>Cham: Springer International Publishing</publisher><subject>Civil Engineering ; Dam safety ; Dam stability ; Dams ; Downstream ; Downstream effects ; Earth and Environmental Science ; Earth Sciences ; Emergency management ; Emergency preparedness ; Finite element method ; Geotechnical Engineering & Applied Earth Sciences ; Hydrogeology ; Hydrostatic pressure ; Mathematical models ; Original Paper ; Pore pressure ; Pore water ; Pore water pressure ; Rain ; Rainfall ; Rainfall intensity ; Reservoirs ; Risk analysis ; Safety ; Safety factors ; Seepage ; Simulation ; Slope stability ; Stress distribution ; Terrestrial Pollution ; Variation ; Waste Management/Waste Technology ; Water levels ; Water pressure ; Working conditions</subject><ispartof>Geotechnical and geological engineering, 2021, Vol.39 (1), p.193-211</ispartof><rights>Springer Nature Switzerland AG 2020</rights><rights>Springer Nature Switzerland AG 2020.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a342t-e982b49da18b9d9205c8a5ddb02f13c8261f82efb4a2e0883103ea6078e5cfe43</citedby><cites>FETCH-LOGICAL-a342t-e982b49da18b9d9205c8a5ddb02f13c8261f82efb4a2e0883103ea6078e5cfe43</cites><orcidid>0000-0001-8207-4334</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/s10706-020-01486-0$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10706-020-01486-0$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,777,781,27905,27906,41469,42538,51300</link.rule.ids></links><search><creatorcontrib>Su, Zhengyang</creatorcontrib><creatorcontrib>Chen, Guangyu</creatorcontrib><creatorcontrib>Meng, Ying</creatorcontrib><title>Study on Seepage Characteristics and Stability of Core Dam Under the Combined Action of the Variation of Reservoir Water Level and Rainfall</title><title>Geotechnical and geological engineering</title><addtitle>Geotech Geol Eng</addtitle><description>To study the influence of the variation of reservoir water level and rainfall on the seepage characteristics and stability of the core dam, considering the coupling effect of seepage field and stress field, finite element simulation of seepage and stability of dam slope when the core dam encounters the variation of reservoir water level and rainfall was carried out based on the unsaturated seepage principle, different rainfall intensities, different rainfall types and different variation rates of reservoir water level were selected for finite element simulation. The results show that: The variation rate of water level mainly affects the time when pore water pressure tends to be stable. The rainfall intensity and rainfall type mainly affect the pore water pressure in the upper part of the dam, and the higher the rainfall intensity, the more drastically the pore water pressure changes in the upper area of the core dam. Rainfall type and rainfall intensity are the main factors that affect the safety factor of the downstream slope of the core wall dam, but have little effect on the safety factor of the upstream slope. When the safety factor of the downstream dam slope tends to be stable, the order of the safety factor of different rainfall type is: forward type > = center type > average type > post-peak type. Whether the water level rises or falls, rainfall will reduce the safety factor of downstream dam slope. The results of this study provide a reference for correctly understanding the seepage and stability law of the slope of core dam and a reference for risk analysis and emergency management when the core dam encounters extreme working conditions.</description><subject>Civil Engineering</subject><subject>Dam safety</subject><subject>Dam stability</subject><subject>Dams</subject><subject>Downstream</subject><subject>Downstream effects</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Emergency management</subject><subject>Emergency preparedness</subject><subject>Finite element method</subject><subject>Geotechnical Engineering & Applied Earth Sciences</subject><subject>Hydrogeology</subject><subject>Hydrostatic pressure</subject><subject>Mathematical models</subject><subject>Original Paper</subject><subject>Pore pressure</subject><subject>Pore water</subject><subject>Pore water pressure</subject><subject>Rain</subject><subject>Rainfall</subject><subject>Rainfall intensity</subject><subject>Reservoirs</subject><subject>Risk analysis</subject><subject>Safety</subject><subject>Safety factors</subject><subject>Seepage</subject><subject>Simulation</subject><subject>Slope stability</subject><subject>Stress distribution</subject><subject>Terrestrial Pollution</subject><subject>Variation</subject><subject>Waste Management/Waste Technology</subject><subject>Water levels</subject><subject>Water pressure</subject><subject>Working conditions</subject><issn>0960-3182</issn><issn>1573-1529</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp9kE1LAzEQhoMoWKt_wFPA8-ok-5U9lvoJBaG1egyzu7NtSrtbk7TQ3-CfNm0Vb55mGJ73GXgZuxZwKwDyOycghywCCRGIRIXthPVEmseRSGVxynpQZBDFQslzduHcAgBkBqLHviZ-U-941_IJ0RpnxIdztFh5ssZ5UzmObc0nHkuzND6ADR92lvg9rvi0rclyPw-ZblWalmo-qLwJrkDtz-9oDf4exuTIbjtj-QcGOx_RlpYH-xhN2-ByecnOwnB09TP7bPr48DZ8jkavTy_DwSjCOJE-okLJMilqFKos6kJCWilM67oE2Yi4UjITjZLUlAlKAqViATFhBrmitGooifvs5uhd2-5zQ87rRbexbXipZZInhUrSdE_JI1XZzjlLjV5bs0K70wL0vnR9LF2H0vWhdA0hFB9DLsDtjOyf-p_UN-MzhWg</recordid><startdate>2021</startdate><enddate>2021</enddate><creator>Su, Zhengyang</creator><creator>Chen, Guangyu</creator><creator>Meng, Ying</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>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>H96</scope><scope>HCIFZ</scope><scope>L.G</scope><scope>L6V</scope><scope>M7S</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><orcidid>https://orcid.org/0000-0001-8207-4334</orcidid></search><sort><creationdate>2021</creationdate><title>Study on Seepage Characteristics and Stability of Core Dam Under the Combined Action of the Variation of Reservoir Water Level and Rainfall</title><author>Su, Zhengyang ; Chen, Guangyu ; Meng, Ying</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a342t-e982b49da18b9d9205c8a5ddb02f13c8261f82efb4a2e0883103ea6078e5cfe43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Civil Engineering</topic><topic>Dam safety</topic><topic>Dam stability</topic><topic>Dams</topic><topic>Downstream</topic><topic>Downstream effects</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Emergency management</topic><topic>Emergency preparedness</topic><topic>Finite element method</topic><topic>Geotechnical Engineering & Applied Earth Sciences</topic><topic>Hydrogeology</topic><topic>Hydrostatic pressure</topic><topic>Mathematical models</topic><topic>Original Paper</topic><topic>Pore pressure</topic><topic>Pore water</topic><topic>Pore water pressure</topic><topic>Rain</topic><topic>Rainfall</topic><topic>Rainfall intensity</topic><topic>Reservoirs</topic><topic>Risk analysis</topic><topic>Safety</topic><topic>Safety factors</topic><topic>Seepage</topic><topic>Simulation</topic><topic>Slope stability</topic><topic>Stress distribution</topic><topic>Terrestrial Pollution</topic><topic>Variation</topic><topic>Waste Management/Waste Technology</topic><topic>Water levels</topic><topic>Water pressure</topic><topic>Working conditions</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Su, Zhengyang</creatorcontrib><creatorcontrib>Chen, Guangyu</creatorcontrib><creatorcontrib>Meng, Ying</creatorcontrib><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Engineering Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><jtitle>Geotechnical and geological engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Su, Zhengyang</au><au>Chen, Guangyu</au><au>Meng, Ying</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study on Seepage Characteristics and Stability of Core Dam Under the Combined Action of the Variation of Reservoir Water Level and Rainfall</atitle><jtitle>Geotechnical and geological engineering</jtitle><stitle>Geotech Geol Eng</stitle><date>2021</date><risdate>2021</risdate><volume>39</volume><issue>1</issue><spage>193</spage><epage>211</epage><pages>193-211</pages><issn>0960-3182</issn><eissn>1573-1529</eissn><abstract>To study the influence of the variation of reservoir water level and rainfall on the seepage characteristics and stability of the core dam, considering the coupling effect of seepage field and stress field, finite element simulation of seepage and stability of dam slope when the core dam encounters the variation of reservoir water level and rainfall was carried out based on the unsaturated seepage principle, different rainfall intensities, different rainfall types and different variation rates of reservoir water level were selected for finite element simulation. The results show that: The variation rate of water level mainly affects the time when pore water pressure tends to be stable. The rainfall intensity and rainfall type mainly affect the pore water pressure in the upper part of the dam, and the higher the rainfall intensity, the more drastically the pore water pressure changes in the upper area of the core dam. Rainfall type and rainfall intensity are the main factors that affect the safety factor of the downstream slope of the core wall dam, but have little effect on the safety factor of the upstream slope. When the safety factor of the downstream dam slope tends to be stable, the order of the safety factor of different rainfall type is: forward type > = center type > average type > post-peak type. Whether the water level rises or falls, rainfall will reduce the safety factor of downstream dam slope. The results of this study provide a reference for correctly understanding the seepage and stability law of the slope of core dam and a reference for risk analysis and emergency management when the core dam encounters extreme working conditions.</abstract><cop>Cham</cop><pub>Springer International Publishing</pub><doi>10.1007/s10706-020-01486-0</doi><tpages>19</tpages><orcidid>https://orcid.org/0000-0001-8207-4334</orcidid></addata></record> |
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| subjects | Civil Engineering Dam safety Dam stability Dams Downstream Downstream effects Earth and Environmental Science Earth Sciences Emergency management Emergency preparedness Finite element method Geotechnical Engineering & Applied Earth Sciences Hydrogeology Hydrostatic pressure Mathematical models Original Paper Pore pressure Pore water Pore water pressure Rain Rainfall Rainfall intensity Reservoirs Risk analysis Safety Safety factors Seepage Simulation Slope stability Stress distribution Terrestrial Pollution Variation Waste Management/Waste Technology Water levels Water pressure Working conditions |
| title | Study on Seepage Characteristics and Stability of Core Dam Under the Combined Action of the Variation of Reservoir Water Level and Rainfall |
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