砂岩颗粒填料压缩与回弹特性试验研究  

Experimental Study on Compression and Resilience Characteristics of Sandstone Particle Packing

作　　者：王世儒[1] 雷伟丽[1] 

机构地区：[1]重庆水利电力职业技术学院,重庆402160

出　　处：《水力发电》2017年第5期119-124,共6页Water Power

摘　　要：通过设定不同的干密度和含水率,进行了16组压缩与回弹试验,探究了灰白砂岩填料压缩与回弹过程中应变与孔隙比随应力的变化趋势,分析了卸荷过程填料回弹率与卸荷比的关系,得到了填料最大回弹率与干密度、含水率的数学经验公式,总结了压缩模量与回弹模量的变化规律。By setting different dry densities and moisture contents, 16 groups of compression and resilience tests are carried out to explore the changing tendency of strain and pore ratio with stress in the process of compression and resilience of gray sandstone. The relationship between rebound rate and unloading ratio in the process of unloading is analyzed. The mathematical formula of maximum rebound rate with dry density or water content of particle packing is obtained, and the variation regularities of compression modulus and resilient modulus are also summarized.

关 键 词：压缩-回弹试验 干密度 含水率 回弹率 压缩模量 回弹模量 砂岩填料 

分 类 号：TV41[水利工程—水工结构工程]