河北水利电力学院学报2024，Vol.34Issue(1)：1-8,8.DOI:10.16046/j.cnki.issn2096-5680.2024.01.001
土石混合料力学特性和颗粒破碎研究
Study on Static Characteristics and Particle Crushing Test of Soil-Rock Mixture
摘要
Abstract
Based on the indoor triaxial apparatus,the undrained consolidation tests of soil-rock mix-tures with five different rock contents and three different confining pressures were carried out.By analy-zing the stress-strain curve,strength parameters and particle crushing law,the mechanical properties and crushing characteristics of soil-rock mixture are discussed.The experimental data show that there is a posi-tive correlation between the rock content and the relative fragmentation rate,and the trend of the relative fragmentation rate will gradually decrease with the increase of confining pressure,which accords with the Allometricl function model.In addition,the increase of stone content can improve the strength of soil-stone mixture,and the internal friction angle has a"slow-fast-slow"growth law with the"Low-middle-high"of stone content.The Boltzmann function model can describe this rule well and has some applicabili-ty.The cohesion of soil-rock mixture is greater when the stone content is low,and when the stone content is high,the cohesion decreases to a certain extent before slowly increasing with the increase of stone con-tent.关键词
土石混合料/三轴试验/含石量/围压/颗粒破碎/静力特性Key words
soil-rock mixture/triaxial test/rock content/confining pressure/particle breakage/static characteristics分类
建筑与水利引用本文复制引用
代兴先,宋杨,张志彬,齐子怡,刘棋瑞..土石混合料力学特性和颗粒破碎研究[J].河北水利电力学院学报,2024,34(1):1-8,8.基金项目
国家自然科学基金项目(51978237) （51978237）
河北省自然科学基金项目(E2018412002) （E2018412002）
河北省人才工程资助项目(A202101027) （A202101027）
河北省高等学校科研重点项目(ZD2021068) （ZD2021068）
河北省大学生科技创新能力培育专项项目 （）
