摘要
为了研究预制裂隙的厚度和宽度对节理岩体的力学特性的影响,对人工制作的单节理裂隙岩体进行了单轴压缩试验和数值模拟,研究了节理面的倾角β、节理面的厚度d、节理面的长度l对单轴抗压强度的影响。研究结果表明:(1)当节理面长度和厚度相同时,随着β随着由0°增加到90°时,试件的单轴抗压强度呈逐渐增加的趋势;当节理面的倾角β和厚度相同时,随着节理面长度的增加,试件的单轴抗压强度呈逐渐减小的趋势。(2)当节理面的倾角β和长度相同时,随着节理面厚度的增加,试件的单轴抗压强度呈逐渐减小的趋势。
In order to study the influence of the thickness and length of prefabricated cracks on the mechanical properties of jointed rock mass. The uniaxial compression test and numerical simulation of the artificially fabricated single-joint fractured rock mass were carried out. The influence of the inclination angle β of the joint surface. the thickness d of the joint surface, and the length l of the joint surface on the uniaxial compressive strength were studied. The results show that:(1) When the length and thickness of the joint surface are the same.the uniaxial compressive strength of the specimen gradually increases with the increase of β from 0°to 90°;when the dip angle of the joint surface β When the thickness is the same. the uniaxial compressive strength of the test piece gradually decreases with the increase of the length of the joint surface.(2) When the inclination angle β and the length of the joint surface are the same, the uniaxial compressive strength of the test piece gradually decreases with the increase of the thickness of the joint surface.
作者
汪子华
熊良宵
WANG Zi-hua;XIONG Liang-xiao(Zhejiang Engineering Investigation Institute,Ningbo,Zhejiang 318000,China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology,Chengdu 610059,China)
出处
《地质灾害与环境保护》
2019年第2期81-85,共5页
Journal of Geological Hazards and Environment Preservation
基金
国家自然科学基金项目(41541021)
关键词
节理岩体
节理面厚度
节理面长度
抗压强度
jointed rock mass
joint surface thickness
joint surface length
compressive strength
