摘要
为研究干湿循环与加载先后顺序对砂泥岩混合料压缩特性的影响,针对不同干湿循环次数、浸水时间和水温处置下的砂泥岩混合料,开展先干湿循环后加载、先加载后干湿循环的单向压缩试验。结果表明,两种试验方法所得砂泥岩混合料压缩量均随干湿循环次数增加、浸水时间增长、水温增高而增大;压缩量与干湿循环次数呈对数关系、与浸水时间呈幂函数关系、与水温呈线性关系,并推导出相应的压缩量计算公式;试验结果及理论分析均得出先干湿循环后加载的压缩量大于先加载后干湿循环的压缩量。
In order to study the influence of dry-wet cycle and loading sequence on the compression characteristics of sandstone-mudstone particle mixture,unidirectional compression tests were carried out for sandstone-mudstone particle mixture treated under different dry-wet cycle times,soaking time and water temperature.The results show that the compressibility of sandstone-mudstone particle mixture increases with the increase of dry-wet cycles,soaking time and water temperature.The compressibility presents logarithmic relationship with the number of dry-wet cycles,power function relationship with soaking time and linear relationship with water temperature,and the corresponding calculation formula of compressibility is derived.The experimental results and theoretical analysis show that the compressive capacity of loading after wet and dry cycling is greater than that of loading after wet-dry cycling.
作者
李辉
王俊杰
向蓉
宋少贤
LI Hui;WANG Jun-jie;XIANG Rong;SONG Shao-xian(School of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China;School of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Urban Investment Infrastructure Construction Co.,Ltd.,Chongqing 400014,China;Chongqing Municipal Research Institute of Design Co.,Ltd.,Chongqing 400020,China)
出处
《水电能源科学》
北大核心
2024年第3期78-82,共5页
Water Resources and Power
基金
重庆市建设科技计划项目(城科字2022第8-12号)
重庆市教委科学技术研究项目(KHZD-K202000705)
重庆市交通科技项目(2022-25)
重庆市研究生联合培养基地建设项目(JDLHPYJD2018001)。
关键词
砂泥岩混合料
压缩特性
试验方法
干湿循环
浸水时间
水温
sandstone-mudstone particle mixture
compression characteristics
test method
dry-wet cycle
soaking time
water temperature
