干旱区生态环境知识资源中心(Arid): Effect of boundary conditions on the strength and deformability of replicas of natural fractures in welded tuff: Data analysis

Arid

DOI	10.2172/145258
报告编号	SAND--93-7079
来源ID	OSTI_ID: 145258
	Effect of boundary conditions on the strength and deformability of replicas of natural fractures in welded tuff: Data analysis
	Wibowo, J.; Amadei, B.; Sture, S. [Colorado Univ., Boulder, CO (United States). Dept. of Civil, Environmental, and Architectural Engineering]; Price, R.H. [Sandia National Labs., Albuquerque, NM (United States)]
英文摘要	Assessing the shear behavior of intact rock & rock fractures is an important issue in the design of a potential nuclear waste repository at Yucca Mountain Nevada. Cyclic direct shear experiments were conducted on replicas of three natural fractures and a laboratory-developed tensile fracture of welded tuff. The tests were carried out under constant normal loads or constant normal stiffnesses with different initial normal load levels. Each test consisted of five cycles of forward and reverse shear motion. Based on the results of the shear tests conducted under constant normal load, the shear behavior of the joint replicas tested under constant normal stiffness was predicted by using the graphical analysis method of Saeb (1989), and Amadei and Saeb (1990). Comparison between the predictions and the actual constant stiffness direct shear experiment results can be found in a report by Wibowo et al. (1993b). Results of the constant normal load shear experiments are analyzed using several constitutive models proposed in the rock mechanics literature for joint shear strength, dilatancy, and joint surface damage. It is shown that some of the existing models have limitations. New constitutive models are proposed and are included in a mathematical analysis tool that can be used to predict joint behavior under various boundary conditions.
出版年	1994
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	05 NUCLEAR FUELS ; 36 MATERIALS SCIENCE ; 58 GEOSCIENCES ; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS ; TUFF ; SHEAR ; HIGH-LEVEL RADIOACTIVE WASTES ; UNDERGROUND DISPOSAL ; GEOLOGIC FRACTURES ; YUCCA MOUNTAIN ; DILATANCY ; MATHEMATICAL MODELS ; Yucca Mountain Project
URL	http://www.osti.gov/scitech/servlets/purl/145258
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/265592
推荐引用方式 GB/T 7714	Wibowo, J.,Amadei, B.,Sture, S. [Colorado Univ., Boulder, CO ,et al. Effect of boundary conditions on the strength and deformability of replicas of natural fractures in welded tuff: Data analysis,1994.