{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T16:54:42Z","timestamp":1787072082063,"version":"build-2736575974"},"reference-count":52,"publisher":"American Chemical Society (ACS)","issue":"32","license":[{"start":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T00:00:00Z","timestamp":1785715200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006247","name":"Anhui University of Science and Technology","doi-asserted-by":"publisher","award":["2023yjrc141"],"award-info":[{"award-number":["2023yjrc141"]}],"id":[{"id":"10.13039\/501100006247","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006247","name":"Anhui University of Science and Technology","doi-asserted-by":"publisher","award":["SKLMRDPC22KF19"],"award-info":[{"award-number":["SKLMRDPC22KF19"]}],"id":[{"id":"10.13039\/501100006247","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100006247","name":"Anhui University of Science and Technology","doi-asserted-by":"publisher","award":["SZQZ2025-2-013"],"award-info":[{"award-number":["SZQZ2025-2-013"]}],"id":[{"id":"10.13039\/501100006247","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,18]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>During CO2 sequestration in coal seams, coal stability is affected by CO2 adsorption, three-dimensional in situ stress, and mining-induced disturbances. In this study, three-dimensional impact tests were conducted on coal under different CO2 pressures and confining pressures using a self-developed high-temperature and high-pressure gas-bearing coal\u2013rock dynamic\u2013static combined loading system. X-ray computed tomography (CT) was employed to characterize fracture evolution before and after CO2 exposure. The results demonstrate that CO2 exposure promotes the propagation of primary fractures and the formation of new fractures while reducing the dynamic peak strength and dynamic elastic modulus of coal. In contrast, confining pressure suppresses fracture propagation and enhances the dynamic load-bearing capacity of coal. On this basis, a damage constitutive model for CO2-exposed coal under three-dimensional stress was developed by coupling CO2 adsorption-induced damage with mechanical loading-induced damage. The model effectively describes prepeak deformation, damage evolution, and peak strength and provides a partial representation of the postpeak stress attenuation trend.<\/jats:p>","DOI":"10.1021\/acsomega.6c03843","type":"journal-article","created":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T14:35:08Z","timestamp":1785854108000},"page":"47994-48009","source":"Crossref","is-referenced-by-count":0,"title":["Dynamic Mechanical\nBehavior and Constitutive Model\nof CO2-Exposed Coal under Three-Dimensional Stress"],"prefix":"10.1021","volume":"11","author":[{"given":"Huaiqian","family":"Liu","sequence":"first","affiliation":[{"name":"Anhui University of Science and Technology , , , ,","place":["Huainan, Anhui, China, 232001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9797-1003","authenticated-orcid":true,"given":"Hao","family":"Hu","sequence":"additional","affiliation":[{"name":"Anhui University of Science and Technology , , , ,","place":["Huainan, Anhui, China, 232001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui","family":"Li","sequence":"additional","affiliation":[{"name":"Shandong Xinjulong Energy Co., Ltd. , ,","place":["Heze, China, 274000"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Li","sequence":"additional","affiliation":[{"name":"Laiwu Laixin Iron Mine Co., Ltd. , ,","place":["Jinan, China, 251403"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xionggang","family":"Xie","sequence":"additional","affiliation":[{"name":"Mining College of Guizhou University, Guizhou University , , ,","place":["Liupanshui, Guizhou, China, 550025"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lipeng","family":"Chen","sequence":"additional","affiliation":[{"name":"Anhui University of Science and Technology , , , ,","place":["Huainan, Anhui, China, 232001"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhipeng","family":"Liao","sequence":"additional","affiliation":[{"name":"Anhui University of Science and Technology , , , ,","place":["Huainan, Anhui, China, 232001"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,8,3]]},"reference":[{"issue":"10","key":"2026081811102592700_cit1","doi-asserted-by":"publisher","first-page":"1015","DOI":"10.1002\/er.2921","article-title":"Carbon dioxide sequestration effects on coal\u2019s\nhydro-mechanical properties, a review","volume":"36","author":"Perera","year":"2012","journal-title":"Int.\nJ. 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J.\nCoal Geol."},{"issue":"6","key":"2026081811102592700_cit14","first-page":"2630","article-title":"Meso-statistical damage\nconstitutive model and validation\nof coal under CO2 - load coupling","volume":"49","author":"Wang","year":"2024","journal-title":"J. China Coal Soc."},{"key":"2026081811102592700_cit15","doi-asserted-by":"publisher","first-page":"90","DOI":"10.1016\/j.supflu.2019.02.014","article-title":"Qualitative\nand quantitative evaluation of the alteration of micro-fracture characteristics\nof supercritical CO2-interacted coal","volume":"147","author":"Sampath","year":"2019","journal-title":"J. Supercrit. 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China Coal Soc."},{"issue":"3","key":"2026081811102592700_cit30","first-page":"531","article-title":"Dynamic characteristics\nand damage model for rock under uniaxial cyclic impact compressive\nloads","volume":"35","author":"Zhu","year":"2013","journal-title":"Chin. J. Geotech. Eng."},{"issue":"5","key":"2026081811102592700_cit31","first-page":"865","article-title":"Constitutive\nmodel of rock under\ncoupled static-dynamic loading with intermediate strain rate","volume":"25","author":"Li","year":"2006","journal-title":"Chin. J. Rock Mech. Eng."},{"issue":"1","key":"2026081811102592700_cit32","doi-asserted-by":"publisher","first-page":"105","DOI":"10.1016\/j.ijrmms.2011.10.004","article-title":"Suggested methods for determining\nthe dynamic strength parameters and mode-I fracture toughness of rock\nmaterials","volume":"49","author":"Zhou","year":"2012","journal-title":"Int. J. Rock Mech. Min. Sci."},{"issue":"5","key":"2026081811102592700_cit33","first-page":"1070","article-title":"Mechanical properties and statistical\ndamage model of coal with different moisture contents under uniaxial\ncompression","volume":"37","author":"Wang","year":"2018","journal-title":"Chin. J. Rock Mech. Eng."},{"key":"2026081811102592700_cit34","doi-asserted-by":"publisher","first-page":"25","DOI":"10.1007\/s40948-025-00942-6","article-title":"Study on the\nmicro-fracture-structure and permeability\nbehavior of coal under the action of CO2 based on micro-CT","volume":"11","author":"Chen","year":"2025","journal-title":"Geomech. Geophys. Geo-Energ. Geo-Resour."},{"key":"2026081811102592700_cit35","doi-asserted-by":"publisher","first-page":"174261","DOI":"10.1016\/j.scitotenv.2024.174261","article-title":"Triaxial-mechanical\nand permeability\nproperties of coal body under varying CO2 pressures","volume":"946","author":"Chen","year":"2024","journal-title":"Sci. Total Environ."},{"issue":"9","key":"2026081811102592700_cit36","first-page":"135","article-title":"Fracture development and 3D dynamic characteristics of coal body\nunder action of CO2","volume":"44","author":"Wang","year":"2025","journal-title":"J. Vib. Shock"},{"key":"2026081811102592700_cit37","volume-title":"Modeling And Numerical\nSimulation Study Of Fractured Low-Permeability Sandstone Reservoirs","author":"Sun","year":"2010"},{"issue":"7","key":"2026081811102592700_cit38","first-page":"2281","article-title":"Strain rate effect\nand energy dissipation characteristics of sandstone\nin coal measures under impact loading","volume":"46","author":"Yu","year":"2021","journal-title":"J. China\nCoal Soc."},{"issue":"2","key":"2026081811102592700_cit39","doi-asserted-by":"publisher","first-page":"815","DOI":"10.1007\/s00603-019-01955-w","article-title":"Dynamic compressive\ntest of gas-containing\ncoal using a modified split Hopkinson pressure bar system","volume":"53","author":"Yin","year":"2020","journal-title":"Rock Mech. Rock Eng."},{"key":"2026081811102592700_cit40","doi-asserted-by":"publisher","first-page":"119813","DOI":"10.1016\/j.powtec.2024.119813","article-title":"Energy dissipation\nand crack propagation in gas-containing coal under\nimpact loading, An experimental study","volume":"441","author":"Chen","year":"2024","journal-title":"Powder\nTechnol."},{"issue":"10","key":"2026081811102592700_cit41","first-page":"2064","article-title":"Experimental\nstudy of dynamic failure\ncharacteristics of coal-rock compound under one-dimensional static\nand dynamic loads","volume":"33","author":"Liu","year":"2014","journal-title":"Chin. J. Rock Mech. Eng."},{"key":"2026081811102592700_cit42","doi-asserted-by":"publisher","first-page":"106579","DOI":"10.1016\/j.soildyn.2021.106579","article-title":"Experimental\nand numerical investigations on dynamic mechanical responses and failure\nprocess of gas-bearing coal under impact load","volume":"142","author":"Kong","year":"2021","journal-title":"Soil Dyn. Earthquake Eng."},{"issue":"10","key":"2026081811102592700_cit43","doi-asserted-by":"publisher","first-page":"419","DOI":"10.1007\/s10064-024-03915-3","article-title":"Progressive\nfailure characteristics of coal under uniaxial compression, A comprehensive\napplication of micro-CT and digital volume correlation","volume":"83","author":"Yu","year":"2024","journal-title":"Bull. Eng. Geol. Environ."},{"issue":"2","key":"2026081811102592700_cit44","doi-asserted-by":"publisher","first-page":"387","DOI":"10.1016\/j.petrol.2022.110144","article-title":"Fracture evolution\nand permeability\ncharacteristics in gas-bearing coal based on industrial CT scanning\nand LBM method","volume":"39","author":"Wang","year":"2022","journal-title":"J. Min. Saf. 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Eng."},{"issue":"S1","key":"2026081811102592700_cit48","first-page":"43","article-title":"Experimental study\nof mechanical behaviours of shale under different confining pressures\nand different strain rates","volume":"38","author":"Liu","year":"2017","journal-title":"Rock Soil Mech."},{"issue":"7","key":"2026081811102592700_cit49","first-page":"2557","article-title":"Weakening\nand fracturing mechanism of mechanical properties\nof coal and rock caused by supercritical CO2","volume":"47","author":"Liang","year":"2022","journal-title":"J. China Coal Soc."},{"key":"2026081811102592700_cit50","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1155\/2021\/6627242","article-title":"Study on the damage model of coal rock caused by hydraulic\npressure and electrical impulse in borehole","volume":"2021","author":"Bao","year":"2021","journal-title":"Geofluids"},{"issue":"1","key":"2026081811102592700_cit51","doi-asserted-by":"publisher","first-page":"83","DOI":"10.1115\/1.3225775","article-title":"A continuous\ndamage mechanics model for ductile fracture","volume":"107","author":"Lemaitre","year":"1985","journal-title":"J. Eng. Mater. Technol."},{"key":"2026081811102592700_cit52","doi-asserted-by":"publisher","first-page":"538","DOI":"10.1016\/j.jngse.2016.04.043","article-title":"Coupled\nanalysis about multi-factors to the effective influence radius of\nhydraulic flushing, Application of response surface methodology","volume":"32","author":"Kong","year":"2016","journal-title":"Gas Sci. 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