河南城建学院学报2026，Vol.35Issue(1)：38-44,7.DOI:10.14140/j.cnki.hncjxb.2026.01.006
含不同倾角单裂隙白砂岩单轴压缩试验研究
Uniaxial compression of white sandstone with single fractures at different dip angles
摘要
Abstract
To investigate the mechanical properties and failure characteristics of white sandstone containing single fissures with different inclination angles,white sandstone from deep coal mines and white sandstone containing fissures with angles of 0°,15°,30°,45°,60°,75°,and 90° were selected as research sub-jects.Uniaxial compression tests were conducted using intact white sandstone specimens as the control group.The results indicate that the fissure inclination angle significantly controls the peak stress,elastic modulus,and failure mode of the specimens.As the inclination angle increases,the peak stress exhibits an S-shaped growth pattern,initially slow and then rapid,ranging from 54%to 98%of the control group.The elastic modulus shows a cubic nonlinear variation,reaching its lowest value(4.17 GPa)at an inclination angle of 15°,which is approximately 48%lower than the control group.The failure mode transitions system-atically with the fissure inclination angle:tensile-dominated wing crack propagation occurs at 0°,15°,30°;tensile-shear composite failure occurs at 45°,60°,75°;and finally,shear-dominated through-type failure occurs at 90°.关键词
白砂岩/裂隙倾角/单轴压缩/峰值应力/弹性模量/破裂模式Key words
white sandstone/fissure dip angle/uniaxial compression/peak strength/elastic modulus/frac-ture mode分类
建筑与水利引用本文复制引用
赵枭斐,郑超,郑光,贾鑫禄..含不同倾角单裂隙白砂岩单轴压缩试验研究[J].河南城建学院学报,2026,35(1):38-44,7.基金项目
冲击与安全工程教育部重点实验室(宁波大学)开放课题基金项目(CJ202403) （宁波大学）
