Displacement measurement techniques and numerical verification in 3D geomechanical model tests of an underground cavern group

doi:10.1016/j.tust.2016.01.029

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Displacement measurement techniques and numerical verification in 3D geomechanical model tests of an underground cavern group
	Zhang, Q. B.1,2; He, L.1; Zhu, W. S.3
刊名	TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
	2016
卷号	56 页码:54-64
关键词	Underground cavern group Geomechanical model test Displacement measurement Numerical simulation Discontinuous deformation analysis (DDA)
ISSN号	0886-7798
DOI	10.1016/j.tust.2016.01.029
英文摘要	In this paper, the stability of an underground cavern group is investigated on the basis of large-scale 3D geomechanical model tests and numerical simulations. Multiple measurement techniques are developed to measure the convergence of deformation in the cavern, displacements at key points in the side walls and the damage pattern during the excavation simulation process. The digital photogrammetric technique and fiber Bragg grating (FBG) based displacement sensing bars are applied to measure displacements in the surrounding rock masses. Mini multi-point extensometers with high-precision grating scales are developed as transducers for displacement monitoring. Afterward, a nodal-based Discontinuous Deformation Analysis (NDDA) method is applied to simulate the whole process of the physical model tests and to compare with experimental results. The variation process and law curves of the displacements in the surrounding rock and at key points in the side walls are obtained at excavation stages. The study shows that the application of the displacement measurement methods used in the surrounding rock masses for large-scale model tests of cavern group under true 3-D stress state have achieved satisfactory results. (C) 2016 Published by Elsevier Ltd.
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000375815200006
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3877]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 3.Shandong Univ, Geotech & Struct Engn Res Ctr
推荐引用方式 GB/T 7714	Zhang, Q. B.,He, L.,Zhu, W. S.. Displacement measurement techniques and numerical verification in 3D geomechanical model tests of an underground cavern group[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2016,56:54-64.
APA	Zhang, Q. B.,He, L.,&Zhu, W. S..(2016).Displacement measurement techniques and numerical verification in 3D geomechanical model tests of an underground cavern group.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,56,54-64.
MLA	Zhang, Q. B.,et al."Displacement measurement techniques and numerical verification in 3D geomechanical model tests of an underground cavern group".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 56(2016):54-64.