摘要
岩石(体)的力学行为往往受到试件的形状和尺寸的影响,国内外均有相关试件的制样要求,以统一评定质量及推断相关物理力学参数,但由于岩体的各项异性、多样性,裂缝的不均一性、随机性及裂缝宽度、方向的不确定性等,使岩石(体)样品的力学行为呈现出多样性;通过相关文献的研究成果,分析了从微观裂缝到宏观裂缝岩石力学行为的变化过程,提出了人为因素对尺寸效应的潜在影响,论证了尺寸效应是岩石(体)的一个内在规律并提出了潜在的理想模型曲线;旨在对岩石(体)力学尺寸及相关行为的几个常见问题进行探索和研究,以便于工程建设岩石(体)的相关试验及物理力学参数的选取。
The mechanical behavior of rock mass is often influenced by the shape and size of specimen.There are requirements for sample preparation at home and abroad to evaluate the quality and infer the relevant physical and mechanical parameters.However,due to the heterogeneity and diversity of rock mass,the heterogeneity and randomness of cracks,and the uncertainty of the width and direction of cracks,the mechanical behavior of rock samples presents diversity.Based on the research results of relevant literature,this paper analyzes the change process of rock mechanical behavior from micro fracture to macro fracture,puts forward the potential influence of human factors on size effect,proves that size effect is an internal law of rock mass,and puts forward the potential theoretical model curve.The purpose of this paper is to explore and study some common problems of mechanical size and behavior of rock mass,and to provide reference for relevant tests and selection of physical and mechanical parameters of rock mass in engineering construction.
作者
赵云川
郭钾
ZHAO Yun-chuan;GUO Jia(Sichuan Electric Power Design Consulting Co.,Ltd,Chengdu 610041,China)
出处
《云南水力发电》
2020年第4期95-98,共4页
Yunnan Water Power
