河南城建学院学报2026，Vol.35Issue(1)：10-15,6.DOI:10.14140/j.cnki.hncjxb.2026.01.002
干湿循环下类岩石的声发射特征研究
Acoustic emission characteristics of rock-like materials under wet-dry cycles
摘要
Abstract
To investigate the effects of wet-dry cycles on the mechanical properties and damage mechanisms of rock-like materials,uniaxial compression and acoustic emission tests were conducted on rock-like speci-mens subjected to different numbers of wet-dry cycles.The stress-strain relationship,elastic modulus,uni-axial compressive strength,and acoustic emission parameters of the specimens were systematically analyzed.The results indicate that as the number of cycles increases,the compressive strength,elastic modulus,and cumulative acoustic emission ring-down counts of the specimens show a declining trend.The degradation rates of compressive strength and elastic modulus were 27.9%and 40.1%,respectively,indicating that the elastic modulus parameter is more sensitive to damage than the compressive strength parameter.The cumula-tive ring-down counts decreased by over 60%with increasing cycle numbers,which can serve as a precur-sor characteristic for specimen instability and failure.The sudden drop in the acoustic emission b-value can also be regarded as a precursor to rupture.The failure mode of the specimens gradually transitioned from tensile failure to shear failure.The findings provide data support for real-time monitoring of rock mass dam-age evolution in wet-dry alternating environments.关键词
干湿循环/单轴压缩/类岩石/声发射/破坏形态Key words
dry-wet cycles/uniaxial compression/clastic rocks/acoustic emission/failure mode分类
建筑与水利引用本文复制引用
卢飞飞,卢小雨,董春亮,连旭..干湿循环下类岩石的声发射特征研究[J].河南城建学院学报,2026,35(1):10-15,6.基金项目
国家自然科学基金项目(52074006) （52074006）
中国石油科技创新基金项目(2024DQ02-0304) （2024DQ02-0304）
