计算机与数字工程2025，Vol.53Issue(3)：877-881,900,6.DOI:10.3969/j.issn.1672-9722.2025.03.044
峰前卸荷损伤白砂岩三轴压缩及巴西劈裂试验研究
Triaxial Compression and Brazilian Splitting Test of White Sandstone with Pre-peak Unloading Damage
摘要
Abstract
In order to study the change of triaxial compressive strength and uniaxial tensile strength of white sandstone under different pre-peak unloading damage conditions,the simultaneous unloading method of axial and confining pressure is used to pre-pare different unloading damages for white sandstone.Then,the triaxial compression reloading test and the Brazilian splitting test are carried out respectively,and the data is processed by the Origin software to analyze the reloading mechanical properties of white sandstone and the change law of tensile strength with pre-peak unloading damage.The results show that the greater the damage de-gree of unloading before the peak,the lower the triaxial compressive strength of white sandstone.The decrease range is the largest when σu=80%,and the minimum tensile strength appears when σu=90%.关键词
峰前卸荷损伤/白砂岩/三轴压缩再承载/巴西劈裂Key words
pre-peak unloading damage/white sandstone/triaxial compression reloading/Brazilian splitting分类
建筑与水利引用本文复制引用
纪沛志,郭隆仁,刘坤,梁忠豪,秦楠..峰前卸荷损伤白砂岩三轴压缩及巴西劈裂试验研究[J].计算机与数字工程,2025,53(3):877-881,900,6.基金项目
山东省自然科学基金项目(编号:ZR2021QE202) （编号:ZR2021QE202）
矿山灾害预防控制教育部重点实验室开放研究基金项目(编号:MDPC201915)资助. （编号:MDPC201915）
