Study on dynamic characteristics and energy dissipation of frozen rock with ice-containing structural plane
WANG Lei
LI Zhiqin
MA Feifei
LEI Pengwei
WANG Yuanpeng
CHEN Shiguan
YUAN Chao
Abstract：To study the dynamic characteristics and energy dissipation law of ice containing fractured rocks under low temperature(-10,-20℃)conditions,a split Hopkinson pressure bar(SHPB)was used to conduct uniaxial impact failure tests on low-temperat-ure ice containing fractured rocks under different loading strain rates;the propagation and attenuation characteristics of stress waves in ice-rock structural plane,dynamic response characteristics of frozen rock with ice-rock structural plane,energy dissipation mech-anism and failure mechanism are studied to provide reference for the freezing parameter design of water-rich fractured rock.The test results showed that under different impact rates,the dynamic characteristics and energy dissipation per unit volume of frozen rocks with ice-containing structural planes had a significant strain rate effect.The stress-strain curve showed a three-stage trend,and the dynamic compressive strength and peak strain showed strong strain rate effect;as the strain rate increases,the incident energy,reflec-ted energy,and dissipated energy all increase significantly.
Keywords：frozen rocksplit Hopkinson pressure bar(SHPB)structural planestrain rate effectdynamic characteristics
Publication Date：2025-04-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 127-135 )