摘要
岩石结构面是工程岩体的重要特性,而其渗流特性往往是影响其稳定性的重要因素。为进一步研究岩体结构面的渗流特性,将天然结构面试样的表面形态简化为规则齿形,利用石膏浇筑了人工岩石结构面,并对其开展一系列的结构面剪切-渗流耦合试验,研究结构面剪切过程中水力特性及力学性质的变化规律。试验结果表明:规则齿形结构面的抗剪强度与齿形的角度、法向荷载和渗透压力密切相关;渗透压力对结构面起到软化作用,在较高渗透压力下抗剪强度明显减小,水力开度明显增大;结构面在剪切过程中的切齿效应也随渗透压力的增大而更加显著。
The discontinuity is an important characteristic of engineering rock mass,and the seepage characteristic is generally an important factor affecting its stability.In order to further study the seepage characteristic of rock discontinuity,the interface form of natural discontinuity was simplified to be a regular serrated shape,and the artificial rock discontinuity was cast by gypsum,and a series of shearing and seepage coupling tests was carried out to investigate the hydraulic and mechanical properties subjected to discontinuity shearing.The test results showed that the shearing strength of regular serrated interface discontinuity was closely related to serrated angles,normal loading and seepage pressure;the shearing strength decreased obveriously and hydraulic apertures enlarged a lot under high seepage pressure because of softening effect on discontinuity subjected to seepage pressure;the cutting tooth effect was more significant with the increase of seepage pressure during shearing process.
作者
朱瑞娟
顾琳琳
ZHU Ruijuan;GU Linlin(Datong Vocational and Technical College of Coal,Datong 037003,China;Nanjing University of Science and Technology,Department of Civil Engineering,Nanjing 210094,China)
出处
《工业建筑》
CSCD
北大核心
2020年第10期101-105,共5页
Industrial Construction
基金
国家自然科学基金项目(51908288)。
关键词
齿形结构面
剪切-渗流
规则齿形
水力开度
渗透压力
剪切强度
discontinuity with serrated
shear-seepage
regular serrated interface
hydraulic aperture
seepage pressure
shearing strength
