河南城建学院学报2026，Vol.35Issue(2)：15-23,9.DOI:10.14140/j.cnki.hncjxb.2026.02.003
酸性环境下交叉裂隙类岩石力学特性研究
Study on mechanical properties of cross-fissured rock-like materials under acidic environment
摘要
Abstract
To investigate the influence of intersecting fissure angles on the mechanical properties of rock-like materials under acidic conditions,conventional triaxial compression tests were conducted on speci-mens with different pH values(3,5,7)and intersecting fissure angles(no fissure,30°,60°,90°),while si-multaneously monitoring the evolution of ultrasonic waves during compression to explore both mechanical and acoustic characteristics of fractured rock.The results indicate that the deviatoric stress-strain curves of the specimens can be divided into four stages:compaction,elasticity,yielding,and failure.Under the same pH,the peak stress of the specimens exhibits an exponentially negative correlation with increasing fis-sure angle.At the same fissure angle,as the pH decreases,the volumetric strain expansion point of speci-mens with 60° and 90° fissures occurs earlier.All intact specimens(without fissures)exhibited splitting fail-ure,while specimens with fissures showed shear-splitting failure.The ultrasonic monitoring data revealed that under the same pH,the initial wave velocity and failure wave velocity of the specimens followed the or-der:no fissure＞60°＞30°＞90°.The deviatoric stress-strain curves of the 90° fissured specimens exhibit-ed significant strain-softening behavior after reaching the peak stress,accompanied by a relatively small de-cline in wave velocity.关键词
交叉裂隙/酸性腐蚀/类岩石/超声波/力学性能Key words
cross-fissures/chemical corrosion/rock-like materials/ultrasonic waves/mechanical properties分类
建筑与水利引用本文复制引用
董春亮,郑雅慧,李盼,高凯,徐金峰..酸性环境下交叉裂隙类岩石力学特性研究[J].河南城建学院学报,2026,35(2):15-23,9.基金项目
国家自然科学基金项目(52074006,51404011) （52074006,51404011）
中国石油科技创新基金项目(2024DQ02-0304) （2024DQ02-0304）
