{"title":"Particle breakage of ultra-high dam rockfills under drained shearing","authors":"Wei Jin, Xing Yang, Feng-chun Yang, Jin-quan Shi","doi":"10.1007/s10035-024-01428-0","DOIUrl":null,"url":null,"abstract":"<p>Under the high stress of a 300-m dam, the particle breakage patterns of rockfill material may differ from those under low-stress levels. The existing studies on the particle breakage of rockfill material under ultra-high dams are relatively rare. In this study, by performing a series of large-scale triaxial shear tests under different relative densities and confining pressures, the stress–strain relationships and particle breakage characteristics of a sandstone rockfill material were investigated. The development of four particle breakage indexes before and after the triaxial test, the evolution of the gradation curves, and the applicability of three gradation formulas to the data of this study were analyzed. Based on the distribution of one relative breakage index, its relationship with strength and compressibility was established. Finally, three failure modes for the sandstone rockfill material after the triaxial test were given. And the relationships among failure modes and confining pressure, and particle size were discussed.</p>","PeriodicalId":49323,"journal":{"name":"Granular Matter","volume":"26 2","pages":""},"PeriodicalIF":2.4000,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Granular Matter","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10035-024-01428-0","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Under the high stress of a 300-m dam, the particle breakage patterns of rockfill material may differ from those under low-stress levels. The existing studies on the particle breakage of rockfill material under ultra-high dams are relatively rare. In this study, by performing a series of large-scale triaxial shear tests under different relative densities and confining pressures, the stress–strain relationships and particle breakage characteristics of a sandstone rockfill material were investigated. The development of four particle breakage indexes before and after the triaxial test, the evolution of the gradation curves, and the applicability of three gradation formulas to the data of this study were analyzed. Based on the distribution of one relative breakage index, its relationship with strength and compressibility was established. Finally, three failure modes for the sandstone rockfill material after the triaxial test were given. And the relationships among failure modes and confining pressure, and particle size were discussed.
期刊介绍：
Although many phenomena observed in granular materials are still not yet fully understood, important contributions have been made to further our understanding using modern tools from statistical mechanics, micro-mechanics, and computational science.
These modern tools apply to disordered systems, phase transitions, instabilities or intermittent behavior and the performance of discrete particle simulations.
>> Until now, however, many of these results were only to be found scattered throughout the literature. Physicists are often unaware of the theories and results published by engineers or other fields - and vice versa.
The journal Granular Matter thus serves as an interdisciplinary platform of communication among researchers of various disciplines who are involved in the basic research on granular media. It helps to establish a common language and gather articles under one single roof that up to now have been spread over many journals in a variety of fields. Notwithstanding, highly applied or technical work is beyond the scope of this journal.
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