Experimental Investigation on the Mechanical Behavior and Damage Evolution Mechanism of Water-Immersed Gypsum Rock
The support system of “the top protection layer and remained pillar” left by gypsum mine easily loses its bearing capacity due to the water-weakening effect, contributing to the geological disasters. In this paper, uniaxial compression tests are carried out to estimate the evolution of mechanical pr...
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| Veröffentlicht in: | Rock mechanics and rock engineering 2021-09, Vol.54 (9), p.4929-4948 |
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| creator | Ma, Hongfa Song, Yanqi Chen, Shaojie Yin, Dawei Zheng, Junjie Shen, Fuxin Li, Xiangshang Ma, Qing |
| description | The support system of “the top protection layer and remained pillar” left by gypsum mine easily loses its bearing capacity due to the water-weakening effect, contributing to the geological disasters. In this paper, uniaxial compression tests are carried out to estimate the evolution of mechanical properties with the change of immersion time for gypsum rock. The results show that the uniaxial compressive strength and tensile strength decrease gradually with the increase of immersion time. After that, the energy evolution law of gypsum rock with different immersion time under one-dimensional loading is explored, proving that the input energy, elastic energy, and dissipative energy decrease totally with the immersion time. A damage constitutive model based on the energy dissipation is used to describe the damage characteristics of gypsum rock subjected to the water-weakening effect and uniaxial loading, and the model is verified to be in good agreement with the experiment results. The influence of water immersion on the failure of gypsum rock is discussed from the mesoscopic and macroscopic perspectives, which shows that the meso defects in the rock develop gradually; however, the macro failure has a transition process of “shear to split, and finally to the mix of shear and split”. It can be reached a conjecture by the analysis of experiment results and of previous studies that the water–rock weakening mechanism of gypsum rock may include the special hydrophilic effect of calcium sulfate dihydrate molecular structure, the micro-dynamic response caused by the change of pore water content, and the swelling effect of water-absorbing minerals. This paper has specific research and reference value to understand the damage evolution characteristics of rock under water–rock interaction. |
| doi_str_mv | 10.1007/s00603-021-02548-2 |
| format | Article |
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In this paper, uniaxial compression tests are carried out to estimate the evolution of mechanical properties with the change of immersion time for gypsum rock. The results show that the uniaxial compressive strength and tensile strength decrease gradually with the increase of immersion time. After that, the energy evolution law of gypsum rock with different immersion time under one-dimensional loading is explored, proving that the input energy, elastic energy, and dissipative energy decrease totally with the immersion time. A damage constitutive model based on the energy dissipation is used to describe the damage characteristics of gypsum rock subjected to the water-weakening effect and uniaxial loading, and the model is verified to be in good agreement with the experiment results. The influence of water immersion on the failure of gypsum rock is discussed from the mesoscopic and macroscopic perspectives, which shows that the meso defects in the rock develop gradually; however, the macro failure has a transition process of “shear to split, and finally to the mix of shear and split”. It can be reached a conjecture by the analysis of experiment results and of previous studies that the water–rock weakening mechanism of gypsum rock may include the special hydrophilic effect of calcium sulfate dihydrate molecular structure, the micro-dynamic response caused by the change of pore water content, and the swelling effect of water-absorbing minerals. This paper has specific research and reference value to understand the damage evolution characteristics of rock under water–rock interaction.</description><identifier>ISSN: 0723-2632</identifier><identifier>EISSN: 1434-453X</identifier><identifier>DOI: 10.1007/s00603-021-02548-2</identifier><language>eng</language><publisher>Vienna: Springer Vienna</publisher><subject>Bearing capacity ; Calcium ; Calcium sulfate ; Calcium sulfate dihydrate ; Civil Engineering ; Compression ; Compression tests ; Compressive strength ; Constitutive models ; Defects ; Disasters ; Dynamic response ; Earth and Environmental Science ; Earth Sciences ; Energy dissipation ; Energy exchange ; Evolution ; Geophysics/Geodesy ; Gypsum ; Gypsum mines ; Humidity ; Immersion ; Laboratories ; Mathematical models ; Mechanical properties ; Mechanics ; Minerals ; Mining ; Moisture content ; Molecular structure ; Original Paper ; Pore water ; Rocks ; Shear ; Submerging ; Support systems ; Tensile strength ; Water content ; Water damage ; Water immersion</subject><ispartof>Rock mechanics and rock engineering, 2021-09, Vol.54 (9), p.4929-4948</ispartof><rights>The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature 2021</rights><rights>The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature 2021.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c319t-efb634e6755a6e0aba2d0fed9e76dfde115997cb05c139af524b1a0ecc62ed5c3</citedby><cites>FETCH-LOGICAL-c319t-efb634e6755a6e0aba2d0fed9e76dfde115997cb05c139af524b1a0ecc62ed5c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s00603-021-02548-2$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s00603-021-02548-2$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,780,784,27924,27925,41488,42557,51319</link.rule.ids></links><search><creatorcontrib>Ma, Hongfa</creatorcontrib><creatorcontrib>Song, Yanqi</creatorcontrib><creatorcontrib>Chen, Shaojie</creatorcontrib><creatorcontrib>Yin, Dawei</creatorcontrib><creatorcontrib>Zheng, Junjie</creatorcontrib><creatorcontrib>Shen, Fuxin</creatorcontrib><creatorcontrib>Li, Xiangshang</creatorcontrib><creatorcontrib>Ma, Qing</creatorcontrib><title>Experimental Investigation on the Mechanical Behavior and Damage Evolution Mechanism of Water-Immersed Gypsum Rock</title><title>Rock mechanics and rock engineering</title><addtitle>Rock Mech Rock Eng</addtitle><description>The support system of “the top protection layer and remained pillar” left by gypsum mine easily loses its bearing capacity due to the water-weakening effect, contributing to the geological disasters. In this paper, uniaxial compression tests are carried out to estimate the evolution of mechanical properties with the change of immersion time for gypsum rock. The results show that the uniaxial compressive strength and tensile strength decrease gradually with the increase of immersion time. After that, the energy evolution law of gypsum rock with different immersion time under one-dimensional loading is explored, proving that the input energy, elastic energy, and dissipative energy decrease totally with the immersion time. A damage constitutive model based on the energy dissipation is used to describe the damage characteristics of gypsum rock subjected to the water-weakening effect and uniaxial loading, and the model is verified to be in good agreement with the experiment results. The influence of water immersion on the failure of gypsum rock is discussed from the mesoscopic and macroscopic perspectives, which shows that the meso defects in the rock develop gradually; however, the macro failure has a transition process of “shear to split, and finally to the mix of shear and split”. It can be reached a conjecture by the analysis of experiment results and of previous studies that the water–rock weakening mechanism of gypsum rock may include the special hydrophilic effect of calcium sulfate dihydrate molecular structure, the micro-dynamic response caused by the change of pore water content, and the swelling effect of water-absorbing minerals. This paper has specific research and reference value to understand the damage evolution characteristics of rock under water–rock interaction.</description><subject>Bearing capacity</subject><subject>Calcium</subject><subject>Calcium sulfate</subject><subject>Calcium sulfate dihydrate</subject><subject>Civil Engineering</subject><subject>Compression</subject><subject>Compression tests</subject><subject>Compressive strength</subject><subject>Constitutive models</subject><subject>Defects</subject><subject>Disasters</subject><subject>Dynamic response</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Energy dissipation</subject><subject>Energy exchange</subject><subject>Evolution</subject><subject>Geophysics/Geodesy</subject><subject>Gypsum</subject><subject>Gypsum mines</subject><subject>Humidity</subject><subject>Immersion</subject><subject>Laboratories</subject><subject>Mathematical models</subject><subject>Mechanical properties</subject><subject>Mechanics</subject><subject>Minerals</subject><subject>Mining</subject><subject>Moisture content</subject><subject>Molecular structure</subject><subject>Original Paper</subject><subject>Pore water</subject><subject>Rocks</subject><subject>Shear</subject><subject>Submerging</subject><subject>Support systems</subject><subject>Tensile strength</subject><subject>Water content</subject><subject>Water damage</subject><subject>Water 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Mechanical Behavior and Damage Evolution Mechanism of Water-Immersed Gypsum Rock</title><author>Ma, Hongfa ; Song, Yanqi ; Chen, Shaojie ; Yin, Dawei ; Zheng, Junjie ; Shen, Fuxin ; Li, Xiangshang ; Ma, Qing</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-efb634e6755a6e0aba2d0fed9e76dfde115997cb05c139af524b1a0ecc62ed5c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Bearing capacity</topic><topic>Calcium</topic><topic>Calcium sulfate</topic><topic>Calcium sulfate dihydrate</topic><topic>Civil Engineering</topic><topic>Compression</topic><topic>Compression tests</topic><topic>Compressive strength</topic><topic>Constitutive models</topic><topic>Defects</topic><topic>Disasters</topic><topic>Dynamic response</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Energy dissipation</topic><topic>Energy exchange</topic><topic>Evolution</topic><topic>Geophysics/Geodesy</topic><topic>Gypsum</topic><topic>Gypsum mines</topic><topic>Humidity</topic><topic>Immersion</topic><topic>Laboratories</topic><topic>Mathematical models</topic><topic>Mechanical properties</topic><topic>Mechanics</topic><topic>Minerals</topic><topic>Mining</topic><topic>Moisture content</topic><topic>Molecular structure</topic><topic>Original Paper</topic><topic>Pore water</topic><topic>Rocks</topic><topic>Shear</topic><topic>Submerging</topic><topic>Support systems</topic><topic>Tensile strength</topic><topic>Water content</topic><topic>Water damage</topic><topic>Water immersion</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ma, Hongfa</creatorcontrib><creatorcontrib>Song, Yanqi</creatorcontrib><creatorcontrib>Chen, Shaojie</creatorcontrib><creatorcontrib>Yin, Dawei</creatorcontrib><creatorcontrib>Zheng, Junjie</creatorcontrib><creatorcontrib>Shen, 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Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>ProQuest Central Basic</collection><jtitle>Rock mechanics and rock engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ma, Hongfa</au><au>Song, Yanqi</au><au>Chen, Shaojie</au><au>Yin, Dawei</au><au>Zheng, Junjie</au><au>Shen, Fuxin</au><au>Li, Xiangshang</au><au>Ma, Qing</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Experimental Investigation on the Mechanical Behavior and Damage Evolution Mechanism of Water-Immersed Gypsum Rock</atitle><jtitle>Rock mechanics and rock engineering</jtitle><stitle>Rock Mech Rock Eng</stitle><date>2021-09-01</date><risdate>2021</risdate><volume>54</volume><issue>9</issue><spage>4929</spage><epage>4948</epage><pages>4929-4948</pages><issn>0723-2632</issn><eissn>1434-453X</eissn><abstract>The support system of “the top protection layer and remained pillar” left by gypsum mine easily loses its bearing capacity due to the water-weakening effect, contributing to the geological disasters. In this paper, uniaxial compression tests are carried out to estimate the evolution of mechanical properties with the change of immersion time for gypsum rock. The results show that the uniaxial compressive strength and tensile strength decrease gradually with the increase of immersion time. After that, the energy evolution law of gypsum rock with different immersion time under one-dimensional loading is explored, proving that the input energy, elastic energy, and dissipative energy decrease totally with the immersion time. A damage constitutive model based on the energy dissipation is used to describe the damage characteristics of gypsum rock subjected to the water-weakening effect and uniaxial loading, and the model is verified to be in good agreement with the experiment results. The influence of water immersion on the failure of gypsum rock is discussed from the mesoscopic and macroscopic perspectives, which shows that the meso defects in the rock develop gradually; however, the macro failure has a transition process of “shear to split, and finally to the mix of shear and split”. It can be reached a conjecture by the analysis of experiment results and of previous studies that the water–rock weakening mechanism of gypsum rock may include the special hydrophilic effect of calcium sulfate dihydrate molecular structure, the micro-dynamic response caused by the change of pore water content, and the swelling effect of water-absorbing minerals. This paper has specific research and reference value to understand the damage evolution characteristics of rock under water–rock interaction.</abstract><cop>Vienna</cop><pub>Springer Vienna</pub><doi>10.1007/s00603-021-02548-2</doi><tpages>20</tpages></addata></record> |
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| subjects | Bearing capacity Calcium Calcium sulfate Calcium sulfate dihydrate Civil Engineering Compression Compression tests Compressive strength Constitutive models Defects Disasters Dynamic response Earth and Environmental Science Earth Sciences Energy dissipation Energy exchange Evolution Geophysics/Geodesy Gypsum Gypsum mines Humidity Immersion Laboratories Mathematical models Mechanical properties Mechanics Minerals Mining Moisture content Molecular structure Original Paper Pore water Rocks Shear Submerging Support systems Tensile strength Water content Water damage Water immersion |
| title | Experimental Investigation on the Mechanical Behavior and Damage Evolution Mechanism of Water-Immersed Gypsum Rock |
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